gh80A锻棒镍基合金gh4080A板

a1a3a1a6a6a3a6a8a1a9a9a

牌号

化学成分(质量分数)(%)

新牌号

C

Cr

Ni

W

Co

A1

Ti

Fe

Nb

Mn

Mo

B

Ce

Zr

Si

P

S

Cu

时效硬化型镍基合金

GH4080A

0.04～0.10

18.0～21.0

余量

-

≤2.00

1.00～1.80

1.80～2.70

≤1.50

-

≤0.40                                                                                                                                      

-

≤0.008                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         

-

 -

≤0.80                                                  

≤0.                                                                                                                                     02                                                                                                                               

≤O.015

≤0.2

 特性及用途：

特性、用途和相应的固溶强化型铁基合金、时效硬化型铁基合金基本相同。不同之处在于基体的差别。铁基高温合金的基体金属是铁(含铁量约50%左右)，含铬量约10%。23%、含镍量约7%一40%；而镍基高温合金的基体金属是镍，镍含量大于50%  由于镍含量的提高，故镍基高温合金比铁基高温合金的热强性高，最高工作温度已达到1050℃左右；但其可切削加工性亦随之变差。同时由于它们都含有大量的镍，不符合我国资源情况，应逐步采用铁基高温合金来代替。