5052-H32/H34 铝方棒

What Is 5052 Aluminum Square Bar?

5052 aluminum square bar is a solid extruded or drawn product in the 5xxx (Al-Mg) series. Like all 5052 forms, it relies on strain hardening rather than precipitation heat treatment for its strength — meaning its mechanical properties depend on the temper designation (O, H32, H34) rather than a post-extrusion heat-treatment cycle.

Square bar is specified when structural members need a uniform cross-section for machining brackets, support frames, or fixture components. Compared to round bar, square bar provides flat reference surfaces that simplify clamping and alignment during CNC machining operations.

5052 square bar is governed by ASTM B221 (Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Shapes, and Tubes) for extruded product, or ASTM B211 for cold-finished bar.

可提供的5052铝合金产品

5052 铝方棒

Square bar is available in side-length dimensions from 6 mm to 100 mm. Standard lengths are 1–6 m (cut-to-length available). The most common tempers are H32 (for structural stiffness) and O (for maximum formability before machining).

形式	脾气	Side Length (mm)	长度（米）
Square Bar (extruded)	O、H32、H34	6–100	1-6（定尺切割）
Square Bar (cold-finished)	O、H32、H34	6–80	1-6（定尺切割）

其他可提供的5052形态

Linsy also supplies 5052 in sheet, plate, round bar, flat bar, round tube, square tube, and wire. See individual product pages for dimension details.

规格与等效牌号

标准	名称
美国材料与试验协会	B221 (Extruded), B211 (Cold-finished)
EN / AW	EN AW-5052
UNS	A95052
国际标准化组织	Al Mg2.5Cr
GB/T	3190（5052 / LF2旧牌号）
JIS	A5052

化学成分

依据ASTM B221和EN AW-5052标准。数值为重量百分比，除非显示为范围值，否则为最大值。.

要素	重量 %
Si	最大 0.25
铁	0.40（上限）
铜	最大 0.10
锰	最大 0.10
镁	2.2–2.8
Cr	0.15–0.35
锌	最大 0.10
其他，各	0.05 最大值
其他，合计	0.15 最大值
Al	剩余

不同回火状态下的力学性能

Typical room-temperature properties per ASM Handbook and ASTM B221/B211. Values are nominal ranges; actual certificate values accompany each shipment.

脾气	抗拉强度（兆帕）	屈服强度 (MPa)	伸长 %	硬度 (HB)
O（退火）	180–210	55–70	25–30	~45
H32	210–260	175–215	10–16	~60
H34	230–280	195–240	6–12	~68

弹性模量： 69.3 吉帕（所有回火状态）。. 密度： 2.68 克/立方厘米。.

硬度选择指南

Choosing the right 5052 square bar temper depends on whether your priority is machinability or structural stiffness.

脾气	最适合	关键权衡
O	Forming before final machining, maximum ductility for bending operations	Lowest strength; surface may show tool marks more easily
H32	Structural brackets, marine support members, general CNC machining	Good balance of strength (175 MPa yield) and machinability
H34	Load-bearing frames, fixture components requiring higher stiffness	Higher yield (~195 MPa) but reduced ductility for secondary forming

主要特点

耐腐蚀性

5052 square bar shares the alloy’s well-known resistance to saltwater and marine atmospheres. The Mg and Cr content forms a stable oxide film that resists pitting in chloride environments. For structural brackets exposed to splash zones or humid coastal conditions, 5052 is significantly more durable than 6xxx alternatives.

机械加工性能

In H32 and H34 tempers, 5052 square bar machines well with standard carbide tooling. It is not as free-cutting as 2011 (which contains lead) or 6262 (which contains Pb and Bi), but for general milling, drilling, and turning operations, 5052 produces acceptable surface finishes. Square bar’s flat reference surfaces simplify workholding and alignment.

焊接性

All standard welding methods (MIG, TIG, resistance) work well with 5052. No pre- or post-weld heat treatment is required. Recommended filler: 5356 or 5556 for marine service; 4043 for non-marine structural applications.

应用

5052 square bar is used where corrosion resistance and moderate strength are needed in a machinable solid section:

• Marine — structural brackets, hull reinforcement frames, davit components
• Chemical — tank support frames, equipment mounting brackets
• Pressure vessels — internal support structures (per ASME design codes)
• General machining — fixture bases, alignment bars, clamping blocks
• Architectural — handrail supports, awning brackets in coastal locations

加工与表面处理说明

数控加工： H32 and H34 temper square bars machine well with standard carbide tooling. Use moderate cutting speeds and generous coolant for best surface finish. Avoid excessive feeds that cause built-up edge on softer O-temper stock.

裁剪： Bandsaw, circular saw, and abrasive cut all work. For precision cut-to-length, CNC sawing with deburred ends is recommended.

表面处理： Mill finish (as-extruded) is standard. Anodizing (clear or color) is available for decorative or corrosion-enhanced applications. Square bar surfaces anodize uniformly due to flat geometry.

质量文件与检验

Linsy provides a Mill Test Certificate (MTC / 3.1) with every 5052 square bar shipment, documenting chemical composition and mechanical test results per the specified standard. Third-party inspection reports (e.g., SGS test reports) are available on request.

生产在ISO 9001、ISO 14001和ISO 45001认证体系下进行。库存物品的标准交货时间：10-15天；定制尺寸或非标准回火状态：最长60天。.

Why Choose Linsy for 5052 Square Bar?

Linsy Aluminum has supplied 5xxx-series bar products for over 20 years to marine, chemical, and general fabrication customers worldwide.

• 每份订单附带MTC（3.1）证书——记录化学成分和机械性能
• O, H32, H34 tempers stocked in common side-lengths; custom sizes available on request
• Cut-to-length and custom-length options to reduce your downstream processing
• 根据ASTM B660标准进行保护性包装（木箱、钢带捆扎），适用于全球运输

相关资源

探索我们的5052铝合金技术指南：

• 《5052铝材终极指南》
• 5052 H32 铝：深入指南
• 5052 H34 铝板终极指南
• 5052 或 6061 铝：终极指南
• 海洋铝板：5052与5083

5052 Aluminum Square Bar FAQ

Q: What is the difference between 5052 square bar and 5052 flat bar?
A: Square bar has equal sides (e.g., 25×25 mm), providing symmetrical stiffness in all directions. Flat bar has unequal sides (e.g., 25×6 mm), offering higher bending stiffness in one direction. Choose square for structural frames; choose flat for brackets and stiffening ribs.

Q: Can 5052 square bar be heat treated for higher strength?
A: No. 5052 is a non-heat-treatable alloy — its strength comes from strain hardening (cold work), not precipitation. You can only change strength by selecting a different temper (O, H32, H34).

Q: Is 5052 square bar suitable for marine structural brackets?
A: Yes. 5052-H32 square bar is commonly specified for marine brackets, davit frames, and hull reinforcement due to its saltwater corrosion resistance and adequate yield strength (~175 MPa).

常见订购问题解答

问：最低订购量是多少？
答：标准尺寸库存物品的最低起订量低。请联系我们的销售团队了解具体门槛。.

Q: Can I order custom side lengths?
A: Yes — custom extrusion profiles and non-standard side lengths are available on request, with lead times up to 60 days.

问：预计交货周期是多久？
答：库存物品：10-15天。定制尺寸或非标准回火状态：最长60天。.