grade : cw702r铝黄铜轧制棒
number: cuzn20al2as
classification: cupper alloy
density 8.4 g/cm 3
standard: en 1653:1998铜和铜合金。锅炉、压力容器和热水储存装置用板、片和圆
en 12451:1999铜和铜合金。热交换器用无缝圆管
en 12452:1999铜和铜合金。热交换器用轧制翅片无缝管
en 12449:1999铜和铜合金。通用无缝圆管
en 1652:1998铜和铜合金。一般用途的板、片、带和圆
chemical composition ％ of grade cuzn20al2as ( cw702r )
fe mn ni p al cu as pb others -
max 0.07 max 0.1 max 0.1 max 0.01 1.8 - 2.3 76 - 79 0.02 - 0.06 max 0.05 total 0.3 zn - remainder
mechanical properties of grade cuzn20al2as ( cw702r )
rm - tensile strength (mpa) (r330) 330
rm - tensile strength (mpa) (r390) 390
rp0.2 0.2％ proof strength (mpa) (r330) 90
rp0.2 0.2％ proof strength (mpa) (r390) 240
a - min. elongation at fracture (％) (r330) 30
a - min. elongation at fracture (％) (r390) 25
vickers hardness ( hv): (h070) 70 - 105
vickers hardness ( hv): (h100) 100
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