锌合金种类及特性.docx

锌合金种类合金代号商业习用编号No.3No.5No.2No.7ASTMAG40AAC41A--—UNSZ33251Z35530—Z33522SAE903925921—机械性质DieCastAgedDie CastAgedDieCastAgedDie CastAged抗拉强度(Kg/mm2)28.824.633.727.4236.433.628.724.5降伏强度(Kg/mm2)伸长率(%)1016713721318剪切强率(Kg/mm2)21.8—26.7--32.3—21.8—硬度(勃式)82729180100988067冲击强度(J)30.228.833.728.124.63.530.228.8疲劳强度 (Kg/mm2,5%1034.85—5.76--5.98—4.78—压强度(Kg/mm2)42—60.942—21.7--65.1成份锭铸件锭铸件锭锭铸件Al3.9~4.33.5~4.33.9~4.33.5~4.33.9~4.33.9~4.33.5~4.3Mg.025~.50.02~.05.03~.06.03~.08.025~.50.01~.02.005~.020Cu.10max.25max075~1.25.75~1.252.6~2.9.10max.25maxFe.075.10.075.10.075.075.075Pb.004.005.004.005.004.002.003Cd.003.004.003.004.003.002.002Sn.002.003.002.003.002.001.001Ni———--—.005~.002.005~.002Zn余余余余余余余物性密度g/cm36.646.646.646.64熔解温度。

C382~387381~386379~390381~387导电系数(%ACS)27262527热传导系数(W/M°K)113109105113热膨胀系数(20~100°C)(Mm/m°k)27.3627.3627.7227.36比热kg °C0.4190.41904190.419收缩率6/10006/10006/10006/1000。