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7A04 super hard aviation aluminum

价格 50.00元/千克
total supply
9999 千克
MOQ
1 千克
brand
国产/进口
area
Shanghai
Delivery period:
Shipped within 1 days from the date of payment by the buyer
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Shanghai Yikai Metal Products Co

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Product Details
 7A04超硬航空铝材7A04超硬航空铝材
最新供应【 7A04】
  7A04属Al-Zn-Mg-Cu系超高强度铝合金,亦称超硬铝,是超硬铝中想当成熟.使用较久和较广的一个合金。强度高,热处理强化效果好,退火和新淬火状态下塑性中等;与硬铝不同,人工时效状态下的耐蚀性比自然时效状态的耐蚀性好,且自然时效进程慢,需经过3个月后才能达到时效硬化峰值,故7A04在淬火人工时效状态下使用。其缺点是组织稳定性不高,低频疲劳强度低,有应力腐蚀破裂倾向。合金点焊焊接性良好,气焊不良,热处理后可切削性良好,但退火后的可切削性不佳。
  
化学成分: 
硅Si:0.50  
铁Fe: 0.50  
铜Cu:1.4-2.0  
锰Mn:0.20-0.6  
镁Mg:1.8-2.8  
铬Cr:0.10-0.25  
锌Zn:5.0-7.0  
钛Ti:0.10  
铝Al:余量   
 
力学性能:   
抗拉强度 σb (MPa):≥530   
伸长应力 σp0.2 (MPa):≥400   
伸长率 δ10 (%):≥5     
 
热处理规范:
1)均匀化退火:加热450~465℃;保温12~14h;炉冷。
2)完全退火:加热390~430℃;保温30~120min;炉冷至150℃空冷。
3)淬火和时效:淬火465~480℃,水冷;人工时效(包铝板材)115~125℃24h、(未包铝型材)135~145℃16h、(半制品)分1级 115~125℃3h加热,2级155~165℃3h空冷。 
 
7A04理论重量计算公式:
板材:长*宽*高*密度/100000=KG 
棒材:半径*半径*3.14*密度/1000000=KG
 
7A04板材现货规格:0.3mm-350mm(厚度)   
7A04棒材现货规格:3.0mm-500mm(直径)   
7A04线材现货规格:0.1mm-20mm(线径)
 
金牌企业供应海量库存【 7A04】等优质铝材产品,型号全货源足。
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