牌号 (grade)
化学成分 (chemical elements contents) %
mo
si (max)
c (max)
p (max)
s (max)
cu (max)
femo60
55.0-65.5
1.0
0.10
0.05
0.5
femo60cu1
55.5-65.0
1.5
femo60cu1.5
55.0-65.0
2.0
0.50
0.15
femo70
65.0-75.0
femo70cu1
femo70cu1.5
2.5
0.20