直径8mm的孔,公差值为H13是多大?
问题描述:
直径8mm的孔,公差值为H13是多大?
答
H13热作模具钢化学成分%:
C0.32~0.45,
Si0.80~1.20,
Mn0.20~0.50,
Cr4.75~5.50,
Mo1.10~1.75,
V0.80~1.20,
p小于等于0.030,
S小于等于0.030;