铬铁（根据GB/T5683－1987）
1、铬铁用作炼钢时的合金加入剂。
2、铬铁按含碳量的不同，分为二十二个牌号，其化学成分应符合下表规定。
|
类 别 |
牌 号 |
化学成分，％ |
|
Cr≥ |
C≥ |
Si≤ |
P≤ |
S≤ |
|
范围 |
Ⅰ |
Ⅱ |
Ⅰ |
Ⅱ |
Ⅰ |
Ⅱ |
Ⅰ |
Ⅱ |
|
微 碳 |
FeCr55C3 |
|
60 |
52 |
0.03 |
1.5 |
2 |
0.03 |
0.04 |
0.03 |
|
|
FeCr69C0.06 |
63.0~75.0 |
|
|
0.06 |
1 |
|
0.03 |
|
0.025 |
|
|
FeCr55C6 |
|
60 |
52 |
0.06 |
1.5 |
2 |
0.04 |
0.06 |
0.03 |
|
|
FeCr69C0.10 |
63.0~75.0 |
|
|
0.1 |
1 |
|
0.03 |
|
0.025 |
|
|
FeCr55C10 |
|
60 |
52 |
0.1 |
1.5 |
2 |
0.04 |
0.06 |
0.03 |
|
|
FeCr69C0.15 |
63.0~75.0 |
|
|
0.15 |
1 |
|
0.03 |
|
0.025 |
|
|
FeCr55C15 |
|
60 |
52 |
0.15 |
1.5 |
2 |
0.04 |
0.06 |
0.03 |
|
|
低 碳 |
FeCr69C0.25 |
63.0~75.0 |
|
|
0.25 |
1.5 |
|
0.03 |
|
0.025 |
|
|
FeCr55C25 |
|
60 |
52 |
0.25 |
2 |
3 |
0.04 |
0.06 |
0.03 |
0.05 |
|
FeCr69C0.50 |
63.0~75.0 |
|
|
0.5 |
1.5 |
|
0.03 |
|
0.025 |
|
|
FeCr55C50 |
|
60 |
52 |
0.5 |
2 |
3 |
0.04 |
0.06 |
0.03 |
0.05 |
|
中 碳 |
FeCr69C1.0 |
63.0~75.0 |
|
|
1 |
1.5 |
|
0.03 |
|
0.025 |
|
|
FeCr55C100 |
|
60 |
52 |
1 |
2.5 |
3 |
0.04 |
0.06 |
0.03 |
0.05 |
|
FeCr69C2.0 |
63.0~75.0 |
|
|
2 |
1.5 |
|
0.03 |
|
0.025 |
|
|
FeCr55C200 |
|
60 |
52 |
2 |
2.5 |
3 |
0.04 |
0.06 |
0.03 |
0.05 |
|
FeCr69C4.0 |
63.0~75.0 |
|
|
4 |
1.5 |
|
0.03 |
|
0.025 |
|
|
FeCr55C400 |
|
60 |
52 |
4 |
2.5 |
3 |
0.04 |
0.06 |
0.03 |
0.05 |
|
高 碳 |
FeCr67C6.0 |
62.0~72.0 |
|
|
6 |
3 |
|
0.03 |
|
0.04 |
0.06 |
|
FeCr55C600 |
|
60 |
52 |
6 |
3 |
5 |
0.04 |
0.06 |
0.04 |
0.06 |
|
FeCr67C9.5 |
62.0~72.0 |
|
|
9.5 |
3 |
|
0.03 |
|
0.04 |
0.06 |
|
FeCr55C1000 |
|
60 |
52 |
10 |
3 |
5 |
0.04 |
0.06 |
0.04 |
0.06 |
3、铬铁 的物理状态：成块状供应，每块重≤1.5kg。
