3003 aluminum square bar is a non-heat-treatable Al-Mn alloy bar with a square cross-section, widely used in structural framing, machining blanks, decorative trim, chemical equipment supports, and general fabrication. It offers excellent corrosion resistance, good formability and weldability, and moderate strength — approximately 20% stronger than 1100 aluminum. Linsy supplies 3003 square bars in tempers O, H14, H22, H112, and F, with custom side dimensions, cut-to-length service, surface finishing options, and MTC reports included with every order.
Mevcut formlar: square bar / rectangular bar
Yaygın temperler: O / H14 / H22 / H112 / F
İşleme desteği: boya kesim / CNC işleme / TIG & MIG kaynak / eloksal / fırçalama / parlatma
Kalite belgeleri: Her siparişte MTC raporu, talep üzerine SGS testi
3003 aluminum square bar is a bar with a square cross-section, made from 3003 Al-Mn (aluminum-manganese) alloy. As a non-heat-treatable wrought alloy, 3003 derives its strength from cold working rather than precipitation hardening. Square bar is typically produced by extrusion (in H112 or F temper) or fabricated by cutting from strain-hardened sheet or plate stock (in H14, H22, or O temper).
With 1.0–1.5% manganese as its primary alloying element, 3003 offers approximately 20% higher strength than commercially pure 1100 aluminum while retaining excellent corrosion resistance, formability, and weldability. Square bar is widely specified for structural framing, machining blanks, decorative applications, tank supports, and general fabrication where a square cross-section is required for ease of fixturing, assembly, or aesthetic preference.
Common tempers for 3003 square bar include O (tamamen tavlanmış, maksimum şekillendirilebilirlik), H14 (half hard, good balance of strength and workability), and H22 (strain-hardened then partially annealed, stable strength with good formability). Linsy supplies 3003 square bars in these tempers with custom side dimensions, cut-to-length, surface finishing, and MTC reports available for every order.
Linsy supplies 3003 aluminum square bars in standard and custom sizes. Both metric and imperial dimensions are available. Custom cut-to-length, edge conditioning (chamfered or radiused edges), and surface finishing (mill finish, anodized, or brushed) can be specified at order.
| Side (mm) | Uzunluk (mm) | kg/m (Approx.) | Yaygın Temperler |
|---|---|---|---|
| 5 – 12 | 1000 – 4000 | 0.07 – 0.39 | O, H14, H22 |
| 12 – 25 | 1000 – 5000 | 0.39 – 1.69 | O, H14, H112 |
| 25 – 50 | 1000 – 6000 | 1.69 – 6.75 | O, H22, H112, F |
| 50 – 60 | 1000 – 6000 | 6.75 – 9.72 | H112, F |
Note: Side dimension and length can be customized to your drawing or specification. Non-standard sizes and tighter tolerances are available on request. Contact us with your required dimensions for a quick quote.
3003 aluminum square bar is supplied in accordance with major international standards. If your project requires a specific standard or certificate, please specify it when requesting a quote.
| Standart | Tanımlama |
|---|---|
| AA (Alüminyum Birliği) | 3003 |
| UNS | A93003 |
| EN / DIN | EN AW-3003 / AlMn1Cu |
| ISO | AlMn1Cu |
| JIS H 4000 | A3003 |
| GB/T 3190 | 3003 |
| ASTM B211 | 3003 çubuk, rod ve tel |
| ASTM B221 | 3003 ekstrüde çubuk, rod, tel, profiller |
Aşağıdaki kimyasal bileşim limitleri, ASTM B211 ve EN 573-3'e göre 3003 alüminyum için geçerlidir. Tüm değerler ağırlık yüzdesidir (%).
| Element | Min % | Maks % |
|---|---|---|
| Silisyum (Si) | — | 0.6 |
| Demir (Fe) | — | 0.7 |
| Bakır (Cu) | 0.05 | 0.20 |
| Manganez (Mn) | 1.0 | 1.5 |
| Magnezyum (Mg) | — | 0.05 |
| Krom (Cr) | — | 0.05 |
| Çinko (Zn) | — | 0.10 |
| Titanyum (Ti) | — | 0.05 |
| Diğerleri Her Biri | — | 0.05 |
| Diğerleri Toplam | — | 0.15 |
| Alüminyum (Al) | — | Denge |
The mechanical properties of 3003 square bar depend on the temper and the product form (extruded vs. fabricated from plate). The values below are typical for bar stock. Always request an MTC report for certified values on your specific batch.
| Mülkiyet | Tipik Değer |
|---|---|
| Çekme Dayanımı (MPa) | 95 – 130 |
| Akma Dayanımı (MPa) | ≥ 35 |
| Uzama (%) | ≥ 25 |
| Sertlik (Brinell) | ~ 28 |
| Mülkiyet | Tipik Değer |
|---|---|
| Çekme Dayanımı (MPa) | 140 – 180 |
| Akma Dayanımı (MPa) | ≥ 115 |
| Uzama (%) | ≥ 5 |
| Sertlik (Brinell) | ~ 40 |
| Mülkiyet | Tipik Değer |
|---|---|
| Çekme Dayanımı (MPa) | 95 – 145 |
| Akma Dayanımı (MPa) | ≥ 35 |
| Uzama (%) | ≥ 18 |
Select the right temper for your square bar application based on the required strength, formability, and post-machining stability.
| Temper | Açıklama | Temel Fayda | When to Use for Square Bar |
|---|---|---|---|
| O | Tavlanmış — tamamen yumuşak | Maksimum şekillendirilebilirlik ve süneklik | Deep forming, bending to tight radii, or where the square bar will undergo extensive welding or machining with chip control |
| H14 | Gerilme sertleşmesi uygulanmış, 1/2 sert | Mukavemet ve şekillendirilebilirlik arasında iyi denge | General fabrication, brackets, structural members that require moderate strength and can be bent to moderate radii |
| H22 | Gerilme sertleşmesi uygulanmış, ardından kısmen tavlanmış | İyi şekillendirilebilirlikle birlikte stabil mukavemet | Square bar that will be formed after delivery; better long-term stability than H14 |
| H112 | Ekstrüde halinde | No special strain-hardening control — economical | Structural square bar where surface finish and mechanical property consistency are less critical |
3003 aluminum offers excellent resistance to atmospheric corrosion, including in marine and industrial environments. The manganese addition suppresses intergranular corrosion, making 3003 square bar suitable for outdoor structural applications, chemical storage, and marine non-critical parts. It performs well in contact with fresh water, mild chemicals, and food products without requiring a protective coating.
3003 square bar in O, H14, or H22 temper can be cold bent, drilled, tapped, and machined with standard tooling. It is rated as highly weldable by TIG (GTAW), MIG (GMAW), and resistance welding. Filler metal 4043 or 1100 is recommended. Note that welding anneals the heat-affected zone in strain-hardened tempers, reducing local strength — consider using O temper bar if extensive welding is planned.
3003 has fair machinability — softer than heat-treatable alloys like 6061 or 2011. Use sharp tools, positive rake angles, and appropriate cutting speeds to avoid built-up edge. O temper machines more smoothly than H14; chip breakers are recommended for continuous cuts. For square bar used as a machining blank, centerless or blanchard grinding may be specified for tighter tolerance surfaces.
| Endüstri | Uygulamalar | Why 3003 Square Bar Is Used |
|---|---|---|
| Kimyasal İşleme | Tank supports, pipe brackets, walkway framing | Korozyon direnci, kaynaklanabilirlik, orta düzey mukavemet |
| HVAC ve Kanal Sistemleri | Duct framing, equipment stands, mounting bars | Formability, corrosion resistance, workability |
| Genel İmalat | Machining blanks, spacers, fixturing, brackets | Square cross-section for easy clamping/jigging, cost-effective |
| Decorative & Architectural | Trim, railing components, display stands, furniture components | Clean square edges, good surface finish acceptance, formability |
| Depolama ve Taşımacılık | Cargo tie-down bars, rack supports, trailer trim | Weldability, corrosion resistance, cost-effective |
| Food & Beverage Equipment | Washdown frames, equipment supports, conveyor guides | Food-safe, corrosion resistant, easy to clean |
Linsy can supply 3003 square bar with processing and finishing options applied before delivery:
Linsy provides the following quality documentation with every 3003 square bar order:
Tüm Linsy tesisleri ISO 9001, ISO 14001 ve ISO 45001. sertifikalarına sahiptir. Değirmen test sertifikaları, üretimde kullanılan geçerli ASTM veya EN standardına atıfta bulunur.
Linsy Avantajları
Linsy Alüminyum, havacılık, genel mühendislik, otomotiv, denizcilik, gemi yapımı ve diğer özel endüstriyel uygulamalar dahil olmak üzere çeşitli endüstrilere hizmet veren lider bir alüminyum işleme ürünleri tedarikçisidir.
Sertifikalarımızın da gösterdiği gibi, en yüksek kalite ve çevresel sorumluluk standartlarını sürdürmeye kararlıyız: ISO 9001:2008 ， ISO 14001:2004 ve SGS.
