{"id":8805,"date":"2025-06-15T02:00:17","date_gmt":"2025-06-15T02:00:17","guid":{"rendered":"https:\/\/premiumalu.com\/7021-aluminum-the-ultimate-guide-to-its-uses\/"},"modified":"2026-08-19T10:29:13","modified_gmt":"2026-08-19T10:29:13","slug":"7021-aluminyum-kullanimlari-icin-nihai-kilavuz","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/tr\/7021-aluminum-the-ultimate-guide-to-its-uses\/","title":{"rendered":"7021 Al\u00fcminyum'u Ke\u015ffedin: Nihai K\u0131lavuz"},"content":{"rendered":"

7021 Al\u00fcminyumu Nedir?<\/h2>\n\n\n\n

7021, birincil g\u00fc\u00e7lendirici elementi olarak \u00e7inko (%5,0\u20136,0) kullanan ve magnezyum (%1,2\u20131,8) ile bak\u0131r (%1,2\u20132,0) taraf\u0131ndan desteklenen bir 7000 serisi al\u00fcminyum ala\u015f\u0131m\u0131d\u0131r. \u00c7\u00f6kelme sertle\u015fmesi uygulan\u0131r \u2014 mukavemet, so\u011fuk i\u015flemeden de\u011fil, kontroll\u00fc \u0131s\u0131l i\u015flemden gelir. Ala\u015f\u0131m, 7075 ile ayn\u0131 grup olan Al-Zn-Mg-Cu ailesine aittir; ancak bile\u015fimi farkl\u0131 bir denge i\u00e7in ayarlanm\u0131\u015ft\u0131r: \u0131s\u0131dan etkilenen b\u00f6lgede \u00f6nemli \u00f6l\u00e7\u00fcde daha iyi kaynaklanabilirlik ve makul tokluk kar\u015f\u0131l\u0131\u011f\u0131nda hafif\u00e7e daha d\u00fc\u015f\u00fck tepe mukavemeti.<\/p>\n\n\n\n

Bu kaynaklanabilirlik, 7021'i 7000 serisinin geri kalan\u0131ndan ay\u0131ran \u00f6zelliktir. \u00c7o\u011fu 7xxx ala\u015f\u0131m\u0131 \u2014 \u00f6zellikle 7075 \u2014 f\u00fczyon prosesleriyle esasen kaynaklanamaz. 7021, y\u00fcksek mukavemetin bile\u015fenlerin kaynakla birle\u015ftirilebilmesi yetene\u011fiyle bir arada bulunmas\u0131 gereken uygulamalar i\u00e7in \u00f6zel olarak geli\u015ftirilmi\u015ftir. Bunun bedeli korozyon direncidir: t\u00fcm \u00e7inko a\u00e7\u0131s\u0131ndan zengin al\u00fcminyum ala\u015f\u0131mlar\u0131 gibi, 7021 de her t\u00fcrl\u00fc d\u0131\u015f mek\u00e2n veya nemli ortam hizmeti i\u00e7in koruyucu kaplama veya eloksal gerektirir. Par\u00e7a kaynaklanacaksa ve 7000 serisi mukavemeti gerekiyorsa, 7021 bu kombinasyonu pratik hale getiren birka\u00e7 ala\u015f\u0131mdan biridir.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Kimyasal Bile\u015fim ve Mekanik \u00d6zellikler<\/h2>\n\n\n\n

Kimyasal Bile\u015fim<\/h3>\n\n\n\n

Ala\u015f\u0131m\u0131n mukavemet profili, \u00f6ncelikle yapay ya\u015fland\u0131rma s\u0131ras\u0131nda g\u00fc\u00e7lendirici \u00e7\u00f6keltiler olu\u015fturan \u00e7inko ve magnezyum taraf\u0131ndan belirlenir. Bak\u0131r, ikincil bir sertle\u015fme etkisi ekler ve gerilim korozyonu \u00e7atlamas\u0131na kar\u015f\u0131 direnci art\u0131r\u0131r. Zirkonyum (%0,08\u20130,18) yap\u0131sal bir rol oynar: yeniden kristalle\u015fme s\u0131cakl\u0131\u011f\u0131n\u0131 y\u00fckseltir, bu da ala\u015f\u0131m\u0131n \u0131s\u0131l i\u015flem ve kaynak d\u00f6ng\u00fcleri boyunca ince tane yap\u0131s\u0131n\u0131 korumas\u0131na yard\u0131mc\u0131 olur. Krom (%0,10\u20130,25), ek tane s\u0131n\u0131r\u0131 sabitlemesi sa\u011flar.<\/p>\n\n\n\n

Element<\/strong><\/td>Bile\u015fim Aral\u0131\u011f\u0131 (a\u011f\u0131rl\u0131k\u00e7a %)<\/strong><\/td>Rol<\/strong><\/td><\/tr>
Al\u00fcminyum (Al)<\/td>Denge (~,7\u201393,7)<\/td>Ana metal<\/td><\/tr>
\u00c7inko (Zn)<\/td>5.0\u20136.0<\/td>Birincil g\u00fc\u00e7lendirici element<\/td><\/tr>
Magnezyum (Mg)<\/td>1.2\u20131.8<\/td>\u00c7\u00f6kelti olu\u015fturucu; mukavemet + korozyon<\/td><\/tr>
Bak\u0131r (Cu)<\/td>1.2\u20132.0<\/td>\u0130kincil sertle\u015fme; gerilim-korozyon direnci<\/td><\/tr>
Manganez (Mn)<\/td>0.10\u20130.40<\/td>Tane yap\u0131s\u0131 kontrol\u00fc<\/td><\/tr>
Krom (Cr)<\/td>0.10\u20130.25<\/td>Tane s\u0131n\u0131r\u0131 stabilizasyonu<\/td><\/tr>
Zirkonyum (Zr)<\/td>0.08\u20130.18<\/td>Yeniden kristalle\u015fme s\u0131cakl\u0131\u011f\u0131 art\u0131\u015f\u0131<\/td><\/tr>
Silisyum (Si)<\/td>\u22640,40<\/td>Safs\u0131zl\u0131k limiti<\/td><\/tr>
Demir (Fe)<\/td>\u22640,50<\/td>Safs\u0131zl\u0131k limiti<\/td><\/tr>
Titanyum (Ti)<\/td>\u22640,10<\/td>Tane inceltici<\/td><\/tr>
Di\u011ferleri (her biri)<\/td>3103 Al\u00fcminyumun Kimyasal Bile\u015fimi<\/td>Eser elementler<\/td><\/tr>
Di\u011ferleri (toplam)<\/td>\u22640,05<\/td>Toplam eser<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

Mekanik \u00d6zellikler (T6 Temperi)<\/h3>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Aksi belirtilmedik\u00e7e, a\u015fa\u011f\u0131daki de\u011ferler T6 temperindeki 7021 i\u00e7indir \u2014 \u00e7\u00f6zelti \u0131s\u0131l i\u015flemi uygulanm\u0131\u015f ve tepe mukavemetine yapay olarak ya\u015fland\u0131r\u0131lm\u0131\u015ft\u0131r. Bu, yap\u0131sal uygulamalar i\u00e7in temel durumdur.<\/p>\n\n\n\n

M\u00fclkiyet<\/strong><\/td>De\u011fer<\/strong><\/td>Notlar<\/strong><\/td><\/tr>
Yo\u011funluk<\/td>2,78 g\/cm\u00b3<\/td>7xxx serisi i\u00e7in tipik<\/td><\/tr>
Nihai \u00c7ekme Dayan\u0131m\u0131<\/td>470 MPa (68 ksi)<\/td>Boyuna, oda s\u0131cakl\u0131\u011f\u0131<\/td><\/tr>
\u00c7ekme Akma Mukavemeti (%0,2 ofset)<\/td>420 MPa (61 ksi)<\/td>Yap\u0131sal par\u00e7alar i\u00e7in tasar\u0131ma esas de\u011fer<\/td><\/tr>
Kopma Uzamas\u0131<\/td>~10%<\/td>50 mm \u00f6l\u00e7\u00fc boyunda<\/td><\/tr>
Elastisite Mod\u00fcl\u00fc<\/td>71 GPa (10.300 ksi)<\/td>\u00c7eli\u011fin yakla\u015f\u0131k \u00fc\u00e7te biri<\/td><\/tr>
Yorulma Mukavemeti (5\u00d710\u2078 \u00e7evrim)<\/td>~150 MPa (22 ksi)<\/td>D\u00fczg\u00fcn numune, R = \u22121<\/td><\/tr>
Kesme Dayan\u0131m\u0131<\/td>270 MPa (39 ksi)<\/td>Per\u00e7inli ve c\u0131vatal\u0131 ba\u011flant\u0131 tasar\u0131m\u0131 i\u00e7in ge\u00e7erli<\/td><\/tr>
Sertlik<\/td>~120 HB<\/td>500 kg y\u00fck, 10 mm bilye<\/td><\/tr>
Termal \u0130letkenlik<\/td>150 W\/m\u00b7K<\/td>Orta d\u00fczey; \u00e7o\u011fu yap\u0131sal uygulama i\u00e7in yeterli<\/td><\/tr>
Elektriksel \u0130letkenlik<\/td>IACS<\/td>\u00c7inko a\u00e7\u0131s\u0131ndan zengin ala\u015f\u0131mlar i\u00e7in tipik<\/td><\/tr>
Erime Aral\u0131\u011f\u0131<\/td>510\u2013630\u00b0C<\/td>Solidus'tan likidus'a<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

420 MPa akma mukavemeti, 7021-T6'y\u0131 6061-T6'n\u0131n (276 MPa) olduk\u00e7a \u00fczerine ve y\u00fcksek mukavemetli al\u00fcminyum kategorisine sa\u011flam bir \u015fekilde yerle\u015ftirir. uzama, 5xxx veya 6xxx ala\u015f\u0131mlar\u0131n\u0131n tipik uzamas\u0131ndan daha d\u00fc\u015f\u00fckt\u00fcr; bu, par\u00e7an\u0131n imalat sonras\u0131 \u015fekillendirme gerektirmesi durumunda \u00f6nemlidir \u2014 T6 temperindeki 7021 bir \u015fekillendirme ala\u015f\u0131m\u0131 de\u011fildir. Buradaki denge, s\u00fcneklik kar\u015f\u0131l\u0131\u011f\u0131nda mukavemettir ve statik y\u00fck kapasitesinin tasar\u0131ma esas oldu\u011fu yap\u0131sal uygulamalarda, akma mukavemeti tasar\u0131ma esas de\u011ferdir.<\/p>\n\n\n\n

7021 Nerelerde Kullan\u0131l\u0131r<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

7021\u2019in belirleyici avantaj\u0131, mukavemet + kaynaklanabilirlik kombinasyonudur. \u00c7o\u011fu uygulama, 7075'in bariz mukavemet tercihi olaca\u011f\u0131 ancak par\u00e7an\u0131n kaynakla birle\u015ftirilmesi gereken kategorilere girer.<\/p>\n\n\n\n

1. Kaynakl\u0131 Yap\u0131sal Montajlar<\/h3>\n\n\n\n

Kaynakl\u0131 ta\u015f\u0131ma yap\u0131lar\u0131 \u2014 kamyon \u015fasileri, treyler \u015fasileri, vagon bile\u015fenleri \u2014 hem y\u00fcksek mukavemetin hem de f\u00fczyon kayna\u011f\u0131n\u0131n gerekti\u011fi yerlerde 7021 kullan\u0131r. Ala\u015f\u0131m\u0131n s\u0131cak \u00e7atlama direnci 7075\u2019inkinden \u00f6nemli \u00f6l\u00e7\u00fcde daha iyidir ve kalifiye 5xxx serisi dolgu teli (5356 veya 5183) ile MIG ve TIG i\u00e7in uygulanabilir k\u0131lar. Kaynakl\u0131 ba\u011flant\u0131, tasar\u0131m\u0131 s\u0131n\u0131rlayan konum olmaya devam eder.<\/p>\n\n\n\n

2. Havac\u0131l\u0131k Kaynakl\u0131 Bile\u015fenler<\/h3>\n\n\n\n

Havac\u0131l\u0131kta 7021, kaynakl\u0131 alt montajlarda \u2014 kargo konteyner \u00e7er\u00e7eveleri, takviye montajlar\u0131, ikincil yap\u0131sal braketler \u2014 7075\u2019in kaynaklanamazl\u0131\u011f\u0131n\u0131n a\u011f\u0131rl\u0131k ekleyen per\u00e7inli veya c\u0131vatal\u0131 bir tasar\u0131m\u0131 zorlayaca\u011f\u0131 yerlerde kullan\u0131l\u0131r. G\u00f6vde kaplamas\u0131 veya kanat dire\u011fi ala\u015f\u0131m\u0131 de\u011fildir; bunlar 2024 ve 7075'in alan\u0131 olmaya devam eder.<\/p>\n\n\n\n

3. Kal\u0131p \u0130malat\u0131 ve Tak\u0131m Tezg\u00e2hlar\u0131<\/h3>\n\n\n\n

7021-T6, y\u00fcksek bas\u0131n\u00e7 mukavemeti, termal iletkenlik ve i\u015flenebilirli\u011fin \u00f6nemli oldu\u011fu plastik enjeksiyon kal\u0131plar\u0131nda ve \u00fcflemeli kal\u0131p tak\u0131mlar\u0131nda kullan\u0131l\u0131r. Kal\u0131p \u00e7eliklerine k\u0131yasla, al\u00fcminyum tak\u0131mlar daha h\u0131zl\u0131 \u0131s\u0131 transferiyle \u00e7evrim s\u00fcrelerini k\u0131salt\u0131r ve 7021, ayn\u0131 rolde 6061 veya 5083'ten daha iyi mukavemet sa\u011flar.<\/p>\n\n\n\n

4. Vin\u00e7ler, Kald\u0131rma Ekipmanlar\u0131 ve A\u011f\u0131r \u0130malat<\/h3>\n\n\n\n

Tavan vin\u00e7 kiri\u015fleri, kald\u0131rma kollar\u0131 ve b\u00fcy\u00fck yap\u0131sal imalatlar, yaln\u0131zca mekanik sabitlemenin pratik olmad\u0131\u011f\u0131 yerlerde 7021\u2019in kaynaklanabilirli\u011finden faydalan\u0131r. Malzeme, kaynakl\u0131 ba\u011flant\u0131 noktalar\u0131 etraf\u0131ndaki gerilim konsantrasyonlar\u0131n\u0131 6xxx alternatiflerinden daha iyi y\u00f6netir ve e\u015fde\u011fer mukavemet i\u00e7in titanyum veya \u00e7elikten daha d\u00fc\u015f\u00fck maliyetle sunulur.<\/p>\n\n\n\n

7021 Temper Se\u00e7enekleri<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

7021 en yayg\u0131n olarak \u00fc\u00e7 temperde tedarik edilir; her biri farkl\u0131 bir i\u015fleme gereksinimini kar\u015f\u0131lar.<\/p>\n\n\n\n

Temper<\/strong><\/td>\u0130\u015flem<\/strong><\/td>\u00c7ekme Dayan\u0131m\u0131 (MPa)<\/strong><\/td>Akma Mukavemeti (MPa)<\/strong><\/td>Uzama<\/strong><\/td>\u0130\u00e7in En \u0130yisi<\/strong><\/td>Ka\u00e7\u0131n\u0131lmas\u0131 Gereken Durumlar<\/strong><\/td><\/tr>
T6<\/td>\u00c7\u00f6zelti \u0131s\u0131l i\u015flemi + yapay ya\u015fland\u0131rma<\/td>470<\/td>420<\/td>~10%<\/td>Genel yap\u0131sal par\u00e7alar: kaynak sonras\u0131 i\u015flem gerektirmeyen tedarik durumu mukavemeti<\/td>Is\u0131l i\u015flem sonras\u0131 s\u0131k\u0131 \u015fekillendirme veya b\u00fckme gerektiren durumlar<\/td><\/tr>
T651<\/td>T6 + gerilim giderme germesi (%1\u20133)<\/td>470<\/td>420<\/td>~10%<\/td>Malzeme kald\u0131rma \u00f6ncesinde kal\u0131nt\u0131 gerilimin giderilmesi gereken i\u015flenmi\u015f bile\u015fenler<\/td>\u2014 (\u00e7o\u011fu i\u015fleme d\u0131\u015f\u0131 uygulama i\u00e7in i\u015flevsel olarak T6 ile ayn\u0131)<\/td><\/tr>
T62<\/td>Kullan\u0131c\u0131 uygulamal\u0131 i\u015flemden \u00e7\u00f6zelti \u0131s\u0131l i\u015flemi + yapay ya\u015fland\u0131rma<\/td>~470<\/td>~420<\/td>~10%<\/td>Ham stok yerine imal edilmi\u015f bir montaj olarak \u00e7\u00f6zelti \u0131s\u0131l i\u015flemi ve ya\u015fland\u0131rma uygulanan par\u00e7alar<\/td>Hammadde sipari\u015fi \u2014 bunun yerine T6 veya T651 belirtin<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

T6: Standart Temper<\/h3>\n\n\n\n

T6, \u00e7o\u011fu 7021 uygulamas\u0131 i\u00e7in standart temperdir. Malzeme tamamen ya\u015fland\u0131r\u0131lm\u0131\u015f ve imalata \u2014 kaynak, i\u015fleme ve montaj \u2014 haz\u0131r olarak gelir. 420 MPa akma mukavemeti tasar\u0131m de\u011feridir.<\/p>\n\n\n\n

T651: \u0130\u015fleme \u0130\u00e7in Gerilim Giderilmi\u015f<\/h3>\n\n\n\n

Par\u00e7a yo\u011fun \u015fekilde i\u015flenecekse \u2014 derin cepler, asimetrik malzeme kald\u0131rma, s\u0131k\u0131 d\u00fczl\u00fck toleranslar\u0131 \u2014 T651 daha iyi bir se\u00e7imdir. Gerilim giderme germesi, kal\u0131nt\u0131 s\u00f6nd\u00fcrme gerilmelerini kesit boyunca yeniden da\u011f\u0131t\u0131r ve i\u015fleme s\u0131ras\u0131nda e\u011filmeyi azalt\u0131r. Mekanik \u00f6zellikler T6 ile ayn\u0131d\u0131r; T651 ek mukavemet de\u011fil, boyutsal stabilite sa\u011flar.<\/p>\n\n\n\n

T62 Hakk\u0131nda Bir Not<\/h3>\n\n\n\n

T62, \u00fcreticinin veya imalat\u00e7\u0131n\u0131n, haddehanenin tamamen ya\u015fland\u0131r\u0131lm\u0131\u015f durumda teslim etmesi yerine, \u015fekillendirilmi\u015f veya imal edilmi\u015f bir montaj \u00fczerinde \u00e7\u00f6zelti i\u015flemini ve ya\u015fland\u0131rmay\u0131 ger\u00e7ekle\u015ftirdi\u011fi durumu tan\u0131mlar. T62, ayr\u0131 bir 7021 kalitesi de\u011fildir \u2014 i\u015fleme yolunu tan\u0131mlar. Hammadde sipari\u015f ederken T6 (veya i\u015flenmi\u015f par\u00e7alar i\u00e7in T651) belirtin. T62, kaynak veya \u015fekillendirme sonras\u0131nda tam mukavemeti geri kazand\u0131rmak i\u00e7in bir montaja \u00e7\u00f6zelti \u0131s\u0131l i\u015flemi uygulanmas\u0131 durumunda ge\u00e7erlidir.<\/p>\n\n\n\n

7021 vs 7075 vs 6061<\/h2>\n\n\n\n
\"\"<\/figure>\n\n\n\n

Bu \u00fc\u00e7 ala\u015f\u0131m, en yayg\u0131n y\u00fcksek mukavemetli al\u00fcminyum kararlar\u0131n\u0131 kapsar. A\u015fa\u011f\u0131daki tablo temel se\u00e7im kriterlerini haritalar.<\/p>\n\n\n\n

M\u00fclkiyet<\/strong><\/td>7021-T6<\/a><\/strong><\/td>7075-T6<\/a><\/strong><\/td>6061-T6<\/a><\/strong><\/td><\/tr>
\u00c7ekme Dayan\u0131m\u0131 (UTS)<\/td>470 MPa<\/td>572 MPa<\/td>310 MPa<\/td><\/tr>
Akma Dayan\u0131m\u0131<\/td>420 MPa<\/td>503 MPa<\/td>276 MPa<\/td><\/tr>
Uzama<\/td>~10%<\/td>~11%<\/td>12\u201317%<\/td><\/tr>
Yo\u011funluk<\/td>2,78 g\/cm\u00b3<\/td>2,81 g\/cm\u00b3<\/td>2,70 g\/cm\u00b3<\/td><\/tr>
Kaynaklanabilirlik (f\u00fczyon)<\/td>Orta \u2014 kalifiye MIG\/TIG prosesleri gerektirir<\/td>Zay\u0131f \u2014 f\u00fczyon kayna\u011f\u0131 i\u00e7in \u00f6nerilmez<\/td>M\u00fckemmel \u2014 t\u00fcm yayg\u0131n prosesler<\/td><\/tr>
Korozyon Direnci<\/td>S\u0131n\u0131rl\u0131 \u2014 kaplama veya eloksal gerektirir<\/td>S\u0131n\u0131rl\u0131 \u2014 kaplama veya kaplama (cladding) gerektirir<\/td>\u0130yi \u2014 koruma olmaks\u0131z\u0131n bir\u00e7ok ortamda kullan\u0131labilir<\/td><\/tr>
Yorulma Dayan\u0131m\u0131<\/td>~150 MPa<\/td>~160 MPa<\/td>~97 MPa<\/td><\/tr>
\u0130\u015flenebilirlik<\/td>\u00c7ok iyi<\/td>\u0130yi<\/td>\u0130yi<\/td><\/tr>
Tipik Uygulamalar<\/td>Kaynakl\u0131 yap\u0131lar, kal\u0131plar, kaynakl\u0131 havac\u0131l\u0131k alt montajlar\u0131<\/td>Y\u00fcksek gerilimli i\u015flenmi\u015f bile\u015fenler, g\u00f6vde yap\u0131s\u0131<\/td>Genel imalat, denizcilik, mimari<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

7021'in Do\u011fru Tercih Oldu\u011fu Durumlar<\/h3>\n\n\n\n

Par\u00e7a kaynaklanmal\u0131d\u0131r ve 7000 serisi mukavemet gerektirmektedir. 7075 esasen kaynaklanamaz \u2014 f\u00fczyon b\u00f6lgesinde s\u0131cak \u00e7atlama ve ciddi ITB (\u0131s\u0131dan etkilenen b\u00f6lge) mukavemet kayb\u0131, kaynakl\u0131 montajlar i\u00e7in pratik de\u011fildir. 7021 bu k\u0131s\u0131t i\u00e7in geli\u015ftirilmi\u015ftir. Birle\u015ftirme y\u00f6ntemi kaynak ise ve 6061\u2019in 276 MPa akma mukavemeti yeterli de\u011filse, 7021 mant\u0131kl\u0131 bir \u00fcst ad\u0131md\u0131r.<\/p>\n\n\n\n

Mukavemetin 6061\u2019in sa\u011flad\u0131\u011f\u0131ndan daha \u00f6nemli oldu\u011fu kal\u0131p tak\u0131mlar\u0131. 7021'in 420 MPa akma mukavemeti, plastik enjeksiyon ve \u015fi\u015firme kal\u0131p tak\u0131mlar\u0131na kar\u015f\u0131la\u015ft\u0131r\u0131labilir maliyetle 6061 veya 5083 alternatiflerinden daha y\u00fcksek bas\u0131n\u00e7 de\u011feri sa\u011flar.<\/p>\n\n\n\n

7075 veya 6061'in Daha \u0130yi Oldu\u011fu Durumlar<\/h3>\n\n\n\n

Kaynak gerektirmeyen maksimum mukavemet. 7075-T6, 7021'den yakla\u015f\u0131k daha fazla akma mukavemeti sa\u011flar. C\u0131vatal\u0131 veya per\u00e7inli olacak i\u015flenmi\u015f yap\u0131sal bile\u015fenler, u\u00e7ak ba\u011flant\u0131 par\u00e7alar\u0131 ve y\u00fcksek gerilimli par\u00e7alar i\u00e7in 7075 daha g\u00fc\u00e7l\u00fc se\u00e7imdir. Tam \u00f6zellik verileri i\u00e7in 7075 al\u00fcminyum rehberine bak\u0131n\u0131z.<\/p>\n\n\n\n

\u0130yi korozyon direncine sahip genel imalat. 6061-T6 kaynaklanabilir, \u015fekillendirilebilir, korozyona dayan\u0131kl\u0131d\u0131r ve yayg\u0131n olarak bulunur. 276 MPa akma mukavemetinin yeterli oldu\u011fu ve kaynak basitli\u011finin \u00f6nemli oldu\u011fu yap\u0131sal imalatta 6061 standartt\u0131r. 6061 al\u00fcminyum rehberi tam profili kapsar.<\/p>\n\n\n\n

7021 Al\u00fcminyum ile \u00c7al\u0131\u015fma<\/h2>\n\n\n\n

Tala\u015fl\u0131 \u0130malat<\/h3>\n\n\n\n

7021, y\u00fcksek i\u015f mili h\u0131zlar\u0131nda karb\u00fcr tak\u0131mlarla \u00e7ok iyi i\u015flenir. Tala\u015f olu\u015fumu temizdir ve tala\u015f kontrol\u00fc y\u00f6netilebilir \u2014 6061'den daha iyi ve 7075 ile kabaca kar\u015f\u0131la\u015ft\u0131r\u0131labilir. Par\u00e7a geometrisi derin cepler, asimetrik kesimler veya s\u0131k\u0131 d\u00fczl\u00fck toleranslar\u0131 i\u00e7eriyorsa, kal\u0131nt\u0131 gerilme sal\u0131n\u0131m\u0131ndan kaynaklanan e\u011filmeyi \u00f6nlemek i\u00e7in T6 yerine T651 belirtilmelidir. Sac seviyesi i\u015flemler i\u00e7in \u2014 kesme, delme, hafif frezeleme \u2014 T6 stabildir.<\/p>\n\n\n\n

Kaynak<\/h3>\n\n\n\n

7021'in f\u00fczyon kayna\u011f\u0131 m\u00fcmk\u00fcnd\u00fcr ancak 5xxx veya 6xxx ala\u015f\u0131mlar\u0131ndan daha fazla proses kontrol\u00fc gerektirir. Ala\u015f\u0131m, 7075'e k\u0131yasla s\u0131cak \u00e7atlamaya dayan\u0131kl\u0131d\u0131r ancak ba\u011f\u0131\u015f\u0131k de\u011fildir. Temel uygulamalar:<\/p>\n\n\n\n

    \n
  •  <\/strong>Dolgu metali.<\/strong> 5xxx serisi dolgu telleri \u2014 5356 veya 5183 \u2014 standart se\u00e7imdir. Kat\u0131la\u015fma \u00e7atlamas\u0131na direnen ve kabul edilebilir ba\u011flant\u0131 mukavemeti sa\u011flayan bir kaynak havuzu bile\u015fimi sunarlar.<\/li>\n\n\n\n
  •  <\/strong>Is\u0131 girdisi kontrol\u00fc.<\/strong> Pasolar aras\u0131 s\u0131cakl\u0131k 150\u00b0C'nin (300\u00b0F) alt\u0131nda kalmal\u0131d\u0131r. A\u015f\u0131r\u0131 \u0131s\u0131 girdisi, \u0131s\u0131dan etkilenen b\u00f6lgenin geni\u015fli\u011fini ve bunun sonucunda olu\u015fan mukavemet kayb\u0131n\u0131 art\u0131r\u0131r.<\/li>\n\n\n\n
  •  <\/strong>Kaynak sonras\u0131 \u0131s\u0131l i\u015flem.<\/strong> \u00c7\u00f6zeltiye alma ve yeniden ya\u015fland\u0131rma, ITB mukavemet kayb\u0131n\u0131n \u00f6nemli bir k\u0131sm\u0131n\u0131 geri kazand\u0131rabilir, ancak bu, imalat s\u0131ras\u0131na tam bir termal d\u00f6ng\u00fc ekler ve b\u00fcy\u00fck montajlar i\u00e7in pratik olmayabilir. Kaynaklar, yap\u0131n\u0131n mukavemet s\u0131n\u0131rlay\u0131c\u0131 \u00f6zelli\u011fi olarak tasarlanmal\u0131 ve kesitler buna g\u00f6re boyutland\u0131r\u0131lmal\u0131d\u0131r.<\/li>\n\n\n\n
  •  <\/strong>S\u00fcrt\u00fcnme kar\u0131\u015ft\u0131rma kayna\u011f\u0131.<\/strong> Ba\u011flant\u0131 geometrisinin izin verdi\u011fi durumlarda, s\u00fcrt\u00fcnme kar\u0131\u015ft\u0131rma kayna\u011f\u0131 tercih edilen prosestir. \u00c7\u00f6zeltiye alma s\u0131cakl\u0131\u011f\u0131n\u0131n alt\u0131nda kal\u0131r ve ba\u011flant\u0131da daha fazla ana metal mukavemeti korur. Ancak \u00f6zel ekipman gerektirir ve d\u00fcz veya silindirik geometrilerde al\u0131n ve bindirme ba\u011flant\u0131lar\u0131yla s\u0131n\u0131rl\u0131d\u0131r.<\/li>\n<\/ul>\n\n\n\n

    Korozyon Korumas\u0131<\/h3>\n\n\n\n

    7021\u2019in korozyon direnci s\u0131n\u0131rl\u0131d\u0131r \u2014 bu, neredeyse t\u00fcm 7xxx ala\u015f\u0131mlar\u0131yla payla\u015ft\u0131\u011f\u0131 bir \u00f6zelliktir. \u00c7inko a\u00e7\u0131s\u0131ndan zengin al\u00fcminyum, nemli veya klor\u00fcr i\u00e7eren ortamlarda hem genel korozyona hem de gerilme korozyonu \u00e7atlamas\u0131na kar\u015f\u0131 hassast\u0131r. \u00dc\u00e7 koruma stratejisi \u00e7o\u011fu uygulamay\u0131 kapsar:<\/p>\n\n\n\n

      \n
    •  <\/strong>Eloksal.<\/strong> S\u00fclf\u00fcrik asit eloksal (Tip II) kontroll\u00fc bir oksit bariyeri olu\u015fturur. Ancak y\u00fcksek \u00e7inko i\u00e7eri\u011fi, 6xxx ala\u015f\u0131mlar\u0131na k\u0131yasla daha az homojen bir anodik katman \u00fcretebilir ve eloksal kalitesi banyo ko\u015fullar\u0131na ve ala\u015f\u0131m partisine g\u00f6re de\u011fi\u015fir. Sert eloksal (Tip III) m\u00fcmk\u00fcnd\u00fcr ancak yorulma \u00f6mr\u00fcn\u00fc azaltabilir.<\/li>\n\n\n\n
    •  <\/strong>Boya sistemleri.<\/strong> Epoksi astar ve ard\u0131ndan poli\u00fcretan son kat, standart end\u00fcstriyel koruma sistemidir. \u0130\u00e7 veya korunakl\u0131 uygulamalar i\u00e7in tek katl\u0131 bir sistem yeterli olabilir. Y\u00fczey haz\u0131rl\u0131\u011f\u0131 \u2014 kimyasal d\u00f6n\u00fc\u015f\u00fcm kaplamas\u0131 (Alodine) veya ince eloksal \u2014 boya yap\u0131\u015fmas\u0131 i\u00e7in esast\u0131r.<\/li>\n\n\n\n
    •  <\/strong>Drenaj tasar\u0131m\u0131.<\/strong> Su birikintileri, yar\u0131klar ve nemin birikebilece\u011fi yatay y\u00fczeylerden ka\u00e7\u0131n\u0131lmal\u0131d\u0131r. Basit geometri se\u00e7imleri, herhangi bir kaplamadan daha fazla korozyon riskini azalt\u0131r.<\/li>\n<\/ul>\n\n\n\n

      Art\u0131lar ve S\u0131n\u0131rlamalar Bir Bak\u0131\u015fta<\/h2>\n\n\n\n
      Fakt\u00f6r<\/strong><\/td>Avantaj<\/strong><\/td>S\u0131n\u0131rlama<\/strong><\/td><\/tr>
      G\u00fc\u00e7<\/td>470 MPa \u00c7ekme Mukavemeti, 420 MPa Akma Mukavemeti \u2014 y\u00fcksek mukavemetli al\u00fcminyum kategorisinde<\/td>Akma mukavemetinin belirleyici oldu\u011fu uygulamalarda 7075-T6'n\u0131n yakla\u015f\u0131k \u201318 alt\u0131nda<\/td><\/tr>
      Kaynaklanabilirlik<\/td>En kaynaklanabilir 7xxx ala\u015f\u0131mlar\u0131ndan biri; kalifiye MIG\/TIG ile uygulanabilir<\/td>Proses kontrol\u00fc gerektirir; ITB mukavemet kayb\u0131, kaynak sonras\u0131 \u0131s\u0131l i\u015flem olmaks\u0131z\u0131n kal\u0131c\u0131d\u0131r<\/td><\/tr>
      \u0130\u015flenebilirlik<\/td>\u00c7ok iyi tala\u015f olu\u015fumu ve y\u00fczey kalitesi<\/td>E\u011filmeyi \u00f6nlemek i\u00e7in a\u011f\u0131r i\u015fleme i\u015flemlerinde T651 belirtilmelidir<\/td><\/tr>
      Korozyon direnci<\/td>Eloksal veya boya ile yeterli<\/td>\u00c7\u0131plak ala\u015f\u0131m, korumas\u0131z d\u0131\u015f mekan veya denizcilik hizmeti i\u00e7in uygun de\u011fildir<\/td><\/tr>
      Yorulma<\/td>150 MPa \u2014 yap\u0131sal d\u00f6ng\u00fcsel y\u00fckleme i\u00e7in sa\u011flam<\/td>7075'in (160 MPa) ve 2024'\u00fcn (140 MPa, ancak daha iyi \u00e7entikli yorulma davran\u0131\u015f\u0131yla) alt\u0131nda<\/td><\/tr>
      Stok Durumu<\/td>Levha, \u00e7ubuk ve profil formlar\u0131nda standart haddelenmi\u015f \u00fcr\u00fcn<\/td>6061 veya 7075 kadar yayg\u0131n stoklanmaz; tasar\u0131m yapmadan \u00f6nce bulunabilirli\u011fi do\u011frulay\u0131n<\/td><\/tr>
      \u015eekillendirilebilirlik<\/td>Ekstr\u00fczyon profilleri i\u00e7in yeterli<\/td>T6 durumunda so\u011fuk \u015fekillendirme veya b\u00fckme i\u00e7in uygun de\u011fildir<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

      Sonu\u00e7<\/h2>\n\n\n\n

      7021, 7000 serisinde dar ancak iyi tan\u0131mlanm\u0131\u015f bir konuma sahiptir: 7075\u2019in tepe mukavemetinin yakla\u015f\u0131k \u201318'ini, f\u00fczyon kayna\u011f\u0131 yap\u0131labilme yetene\u011fi kar\u015f\u0131l\u0131\u011f\u0131nda takas eder; ancak s\u0131n\u0131rl\u0131 korozyon direnci koruyucu i\u015flem gerektirir ve kaynak, do\u011fru dolgu metalive \u0131s\u0131 kontrol\u00fc ile kalifiye prosesler gerektirir. 7021 ayr\u0131ca 6061 veya 7075'ten daha az yayg\u0131n stoklan\u0131r; bu da tasar\u0131m taahh\u00fcd\u00fcnden \u00f6nce bulunabilirlik do\u011frulamas\u0131n\u0131 ve proses deste\u011fini kritik hale getirir. <\/p>\n\n\n\n

      Linsy Aluminum, 7021'i T6 ve T651 temperlerinde levha, \u00e7ubuk, boru, tel, bobin, profil ve blok formlar\u0131nda tedarik eder; her sipari\u015fte MTC dok\u00fcmantasyonu, talep \u00fczerine SGS test raporlar\u0131 ve \u015firket i\u00e7i CNC i\u015fleme, MIG\/TIG kaynak, lazer kesim ve y\u00fczey i\u015fleme sunar; d\u00fc\u015f\u00fck MOQ'lu \u00f6zel \u00fcretim, standart d\u0131\u015f\u0131 boyutlar\u0131 tipik 10\u201360 g\u00fcn teslim s\u00fcresiyle kapsar. 7021 kalite, form, temper ve gerekli boyutlar\u0131 spesifikasyon incelemesi ve stok do\u011frulamas\u0131 i\u00e7in g\u00f6nderin.<\/p>\n\n\n\n

      S\u0131k\u00e7a Sorulan Sorular<\/h2>\n\n\n\n

      7021'i 7075'ten farkl\u0131 k\u0131lan nedir?<\/h3>\n\n\n\n

      \u0130ki ala\u015f\u0131m ayn\u0131 Al-Zn-Mg-Cu ailesini payla\u015f\u0131r ancak farkl\u0131 \u00f6ncelikleri hedefler. 7075, f\u00fczyon prosesleriyle esasen kaynaklanamama pahas\u0131na maksimum mukavemet i\u00e7in (T6'da 572 MPa \u00e7ekme mukavemeti, 503 MPa akma mukavemeti) tasarlanm\u0131\u015ft\u0131r. 7021, bu akma mukavemetinin yakla\u015f\u0131k \u201318'ini, kalifiye MIG\/TIG prosesleriyle pratik kaynaklanabilirlik kar\u015f\u0131l\u0131\u011f\u0131nda takas eder. Par\u00e7a kaynaklanmas\u0131 gerekti\u011finde 7021 uygun se\u00e7imdir; c\u0131vatal\u0131, per\u00e7inli veya i\u015flenmi\u015f bile\u015fenlerde maksimum mukavemet i\u00e7in 7075 tercih edilir.<\/p>\n\n\n\n

      7021 standart MIG ekipman\u0131yla kaynaklanabilir mi?<\/h3>\n\n\n\n

      Evet, ancak tipik 6xxx veya 5xxx uygulamalar\u0131n\u0131n \u00f6tesinde proses kontrolleriyle. 5xxx serisi dolgu telleri (5356 veya 5183) standart se\u00e7imdir; pasolar aras\u0131 s\u0131cakl\u0131k 150\u00b0C'nin alt\u0131nda kalmal\u0131 ve ba\u011flant\u0131, bir miktar ITB mukavemet kayb\u0131 beklenerek tasarlanmal\u0131d\u0131r. Kritik yap\u0131sal kaynaklar i\u00e7in, s\u00fcrt\u00fcnme kar\u0131\u015ft\u0131rma kayna\u011f\u0131 daha fazla ba\u011flant\u0131 mukavemeti korur ve par\u00e7a geometrisi izin veriyorsa de\u011ferlendirilmelidir.<\/p>\n\n\n\n

      7021-T6 ve 7021-T651 aras\u0131ndaki fark nedir?<\/h3>\n\n\n\n

      Mekanik \u00f6zellikler ayn\u0131d\u0131r \u2014 470 MPa \u00e7ekme mukavemeti, 420 MPa akma mukavemeti, ~ uzama. Fark, T651'de uygulanan gerilme giderme germe ad\u0131m\u0131d\u0131r (su verme sonras\u0131 %1\u20133 uzama). Bu, kal\u0131nt\u0131 su verme gerilmelerini kesit boyunca yeniden da\u011f\u0131t\u0131r ve i\u015fleme s\u0131ras\u0131nda e\u011filmeyi azalt\u0131r. A\u011f\u0131r i\u015flenecek par\u00e7alar i\u00e7in \u2014 derin cepler, asimetrik kesimler, s\u0131k\u0131 d\u00fczl\u00fck toleranslar\u0131 \u2014 T651 daha g\u00fcvenli se\u00e7imdir. Genel imalat ve kaynak i\u00e7in T6 standartt\u0131r.<\/p>\n\n\n\n

      Yap\u0131sal imalatta 7021, 6061 ile nas\u0131l kar\u015f\u0131la\u015ft\u0131r\u0131l\u0131r?<\/h3>\n\n\n\n

      7021, 6061-T6'dan yakla\u015f\u0131k daha y\u00fcksek akma mukavemeti sa\u011flar (420 MPa'ya kar\u015f\u0131 276 MPa). \u00d6d\u00fcnle\u015fim, daha k\u00f6t\u00fc korozyon direnci, daha zorlu kaynak gereksinimleri, daha d\u00fc\u015f\u00fck uzama ve genellikle daha y\u00fcksek malzeme maliyetidir. Uygulama, mukavemet hedefini 6061 ile kar\u015f\u0131layabiliyorsa, daha kolay imalat ve daha iyi korozyon direnci onu daha basit se\u00e7im yapar. 6061'in 276 MPa akma mukavemeti \u00e7ok az pay b\u0131rakt\u0131\u011f\u0131nda ve kaynak hala gerekti\u011finde 7021 uygun se\u00e7imdir \u2014 kaynak gerekmiyorsa, 7075 daha iyi mukavemet y\u00fckseltmesi olabilir.<\/p>\n\n\n\n

      7021 hizmette korozyon korumas\u0131 gerektirir mi?<\/h3>\n\n\n\n

      Evet \u2014 kuru i\u00e7 ortamlar\u0131n \u00f6tesindeki herhangi bir uygulama i\u00e7in. \u00c7\u0131plak 7021, nemli ko\u015fullarda korozyona u\u011frar ve s\u00fcrekli \u00e7ekme gerilimi alt\u0131nda gerilme korozyonu \u00e7atlamas\u0131na kar\u015f\u0131 hassast\u0131r. S\u00fclf\u00fcrik asit eloksal veya tam boya sistemi (d\u00f6n\u00fc\u015f\u00fcm kaplamas\u0131 + epoksi astar + poli\u00fcretan son kat), d\u0131\u015f mekan veya end\u00fcstriyel ortamlar i\u00e7in minimumdur. Denizcilik veya kimyasal maruziyet i\u00e7in bunun yerine farkl\u0131 bir ala\u015f\u0131m ailesi \u2014 5xxx veya 6xxx \u2014 d\u00fc\u015f\u00fcn\u00fclmelidir.<\/p>","protected":false},"excerpt":{"rendered":"

      What Is 7021 Aluminum? 7021 is a 7000-series aluminum alloy that uses zinc (5.0\u20136.0%) as its primary strengthening element, backed by magnesium (1.2\u20131.8%) and copper (1.2\u20132.0%). It is precipitation-hardened \u2014 strength comes from controlled heat treatment, not cold work. The alloy belongs to the Al-Zn-Mg-Cu family, the same group as 7075, but its composition is […]<\/p>\n","protected":false},"author":1,"featured_media":8794,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"7021 Aluminum: The Ultimate Guide to Properties and Uses","_seopress_titles_desc":"A practical guide to 7021 aluminum: chemical composition, mechanical properties, T6\/T62\/T651 tempers, comparison with 7075 and 6061, and sourcing tips for aerospace and structural use.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[179],"tags":[],"class_list":["post-8805","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-7000-series-aluminum"],"_links":{"self":[{"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/posts\/8805","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/comments?post=8805"}],"version-history":[{"count":3,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/posts\/8805\/revisions"}],"predecessor-version":[{"id":10316,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/posts\/8805\/revisions\/10316"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/media\/8794"}],"wp:attachment":[{"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/media?parent=8805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/categories?post=8805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/premiumalu.com\/tr\/wp-json\/wp\/v2\/tags?post=8805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}