{"id":8804,"date":"2025-06-15T02:00:13","date_gmt":"2025-06-15T02:00:13","guid":{"rendered":"https:\/\/premiumalu.com\/discover-7003-aluminum-key-facts-you-need-to-know\/"},"modified":"2026-07-27T12:39:23","modified_gmt":"2026-07-27T12:39:23","slug":"objevit-7003-hlinik-klicova-fakta-ktera-potrebujete-vedet","status":"publish","type":"post","link":"https:\/\/premiumalu.com\/cs\/discover-7003-aluminum-key-facts-you-need-to-know\/","title":{"rendered":"Slitina hlin\u00edku 7003: Vlastnosti, tepeln\u00e9 zpracov\u00e1n\u00ed a aplikace"},"content":{"rendered":"

\u00davod<\/h2>\n

7003 je hlin\u00edkov\u00e1 slitina \u0159ady 7000 zalo\u017een\u00e1 na zinku a ho\u0159\u010d\u00edku, s mal\u00fdm p\u0159\u00eddavkem zirkonia, kter\u00fd zjem\u0148uje strukturu zrn u extrudovan\u00fdch profil\u016f. Sv\u00fdmi vlastnostmi se bl\u00ed\u017e\u00ed hlin\u00edku 7005<\/a> ale v\u00edce se p\u0159ikl\u00e1n\u00ed k lep\u0161\u00ed vytla\u010ditelnosti ne\u017e k maxim\u00e1ln\u00ed pevnosti. Skute\u010dnou ot\u00e1zkou je, zda jej\u00ed pom\u011br pevnosti k hmotnosti a st\u0159edn\u00ed odolnost proti korozi l\u00e9pe vyhovuj\u00ed sva\u0159ovan\u00fdm nebo extrudovan\u00fdm konstruk\u010dn\u00edm d\u00edl\u016fm ne\u017e slitina \u0159ady 6000, nap\u0159\u00edklad Hlin\u00edk 6061<\/a>.<\/p>\n

Co je hlin\u00edk 7003?<\/h2>\n

7003 pat\u0159\u00ed do \u0159ady 7xxx, kde je prim\u00e1rn\u00edm leguj\u00edc\u00edm prvkem zinek a ho\u0159\u010d\u00edk tvo\u0159\u00ed zpev\u0148uj\u00edc\u00ed f\u00e1zi MgZn2. Zirkonium (p\u0159ibli\u017en\u011b 0,10\u20130,20 %) p\u016fsob\u00ed jako zjem\u0148ova\u010d zrna, co\u017e pom\u00e1h\u00e1 udr\u017eet pevnost u extrudovan\u00fdch profil\u016f. Typick\u00e9 slo\u017een\u00ed: Zn 3,5\u20134,5 %, Mg 0,8\u20131,2 %, Zr 0,08\u20130,20 %, zbytek hlin\u00edk. Hustota je p\u0159ibli\u017en\u011b 2,78 g\/cm\u00b3.<\/p>\n

Typick\u00e9 vlastnosti dle tepeln\u00e9ho zpracov\u00e1n\u00ed<\/h2>\n
\n\n\n\n\n\n\n\n
Temperament<\/th>\nMez pevnosti v tahu (MPa)<\/th>\nMez kluzu (MPa)<\/th>\nProdlou\u017een\u00ed (%)<\/th>\nPozn\u00e1mka<\/th>\n<\/tr>\n<\/thead>\n
T5<\/td>\n~315<\/td>\n~260<\/td>\n~10<\/td>\nExtrudovan\u00e1 a um\u011ble st\u00e1rnut\u00e1 (nejb\u011b\u017en\u011bj\u0161\u00ed)<\/td>\n<\/tr>\n
T6<\/td>\n~340<\/td>\n~285<\/td>\n~9<\/td>\nRozpou\u0161t\u011bc\u00edm \u017e\u00edh\u00e1n\u00edm a st\u00e1rnut\u00e9<\/td>\n<\/tr>\n
T651<\/td>\n~348<\/td>\n~290<\/td>\n~9<\/td>\nOdpru\u017een\u00e1 po st\u00e1rnut\u00ed<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Uveden\u00e9 hodnoty jsou reprezentativn\u00ed typick\u00e9 \u00fadaje; ov\u011b\u0159te je proti certifik\u00e1tu zkou\u0161ek z v\u00e1lcovny pro konkr\u00e9tn\u00ed \u0161ar\u017ei.<\/p>\n

7003 vs. 6061, 7005 a 7075<\/h2>\n
\n\n\n\n\n\n\n\n\n
Slitina<\/th>\nS\u00e9rie<\/th>\nKl\u00ed\u010dov\u00e9 prvky<\/th>\nMez kluzu (MPa)<\/th>\nSva\u0159itelnost<\/th>\nKoroze<\/th>\nNejvhodn\u011bj\u0161\u00ed pou\u017eit\u00ed<\/th>\n<\/tr>\n<\/thead>\n
6061-T6<\/a><\/td>\n6xxx<\/td>\nMg, Si<\/td>\n~276<\/td>\nVynikaj\u00edc\u00ed<\/td>\nDobr\u00fd<\/td>\nObecn\u00e9 konstrukce, sva\u0159ovan\u00e9 v\u00fdrobky<\/td>\n<\/tr>\n
7003-T5<\/td>\n7xxx<\/td>\nZn, Mg, Zr<\/td>\n~260<\/td>\nDobr\u00e1 (st\u00e1rnut\u00ed po sva\u0159ov\u00e1n\u00ed)<\/td>\nM\u00edrn\u00e1<\/td>\nExtrudovan\u00e9 lehk\u00e9 konstrukce<\/td>\n<\/tr>\n
7005-T5<\/a><\/td>\n7xxx<\/td>\nZn, Mg, Mn<\/td>\n~290<\/td>\nVynikaj\u00edc\u00ed<\/td>\nSt\u0159edn\u011b dobr\u00e1<\/td>\nSva\u0159ovan\u00e9 vysoce pevn\u00e9 r\u00e1my<\/td>\n<\/tr>\n
7075-T6<\/td>\n7xxx<\/td>\nZn, Mg, Cu<\/td>\n~503<\/td>\n\u0160patn\u00fd<\/td>\nOmezen\u00e9<\/td>\nLetectv\u00ed, \u0161pi\u010dkov\u00e1 pevnost<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

Aplikace<\/h2>\n