级别 | 公称含铬量,% | 公称含钼量,% |
2 | 0.50 | 0.50 |
12 | 1.00 | 0.50 |
11 | 1.25 | 0.50 |
22,22L | 2.25 | 1.00 |
21,21L | 3.00 | 1.00 |
5 | 5.00 | 0.50 |
9 | 9.00 | 1.00 |
91 | 9.00 | 1.00 |
类别 | 温度,℉(℃) |
2,12,11 | 1150(620) |
22,22L,2L,21L,9 | 1250(675) |
5 | 1300(705) |
元素 | 成分,% | ||||||||||
2级 S50460 |
12级 K11757 |
11级 K11789 |
22级 K21590 |
22L级 K21590 |
21级 K31545 |
21L级 K31545 |
5级 S50200 |
9级 K90941 |
91级 K91560 |
||
C |
熔炼分析 成品分析 |
0.05~0.21 0.04~0.21 |
0.05~0.17 0.04~0.17 |
0.05~0.17 0.04~0.17 |
0.05~0.15① 0.04~0.15① |
≤0.10 ≤0.12 |
0.05~0.15① 0.04~0.15① |
≤0.10 ≤0.12 |
≤0.15 ≤0.15 |
≤0.15 ≤0.15 |
0.08~0.12 0.06~0.15 |
Mn |
熔炼分析 成品分析 |
0.55~0.80 0.50~0.88 |
0.40~0.65 0.35~0.73 |
0.40~0.65 0.35~0.73 |
0.30~0.60 0.25~0.66 |
0.30~0.60 0.25~0.66 |
0.30~0.60 0.25~0.66 |
0.30~0.60 0.25~0.66 |
0.30~0.60 0.25~0.66 |
0.30~0.60 0.25~0.66 |
0.30~0.60 0.25~0.66 |
P,≤ |
熔炼分析 成品分析 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.025 0.025 |
0.020 0.025 |
S,≤ |
熔炼分析 成品分析 |
0.035 0.035 |
0.035 0.035 |
0.035 0.035 |
0.035 0.035 |
0.035 0.035 |
0.035 0.035 |
0.035 0.035 |
0.030 0.030 |
0.030 0.030 |
0.010 0.012 |
Si |
熔炼分析 成品分析 |
0.15~0.40 0.13~0.45 |
0.15~0.40 0.13~0.45 |
0.50~0.80 0.44~0.86 |
≤0.50 ≤0.50 |
≤0.50 ≤0.50 |
≤0.50 ≤0.50 |
≤0.50 ≤0.50 |
≤0.50 ≤0.50 |
≤1.00 ≤1.05 |
0.20~0.50 0.18~0.56 |
Cr |
熔炼分析 成品分析 |
0.50~0.80 0.46~0.85 |
0.80~1.15 0.71~1.21 |
1.00~1.50 0.94~1.56 |
2.00~2.50 1.88~2.62 |
2.00~2.50 1.88~2.62 |
2.75~3.25 2.63~3.37 |
2.75~3.25 2.63~3.37 |
4.00~6.00 3.90~6.10 |
8.00~10.00 7.9~10.10 |
8.00~9.50 7.90~9.60 |
Mo |
熔炼分析 成品分析 |
0.45~0.60 0.40~0.65 |
0.45~0.60 0.40~0.65 |
0.45~0.65 0.40~0.70 |
0.90~1.10 0.85~1.15 |
0.90~1.10 0.85~1.15 |
0.90~1.10 0.85~1.15 |
0.90~1.10 0.85~1.15 |
0.45~0.65 0.40~0.70 |
0.90~1.10 0.85~1.15 |
0.85~1.05 0.80~1.10 |
Ni |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
0.40 0.43 |
V |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
≤0.04 ≤0.05 |
0.18~0.25 0.16~0.27 |
Nb |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
0.06~0.10 0.05~0.11 |
B |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
N |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
0.030~0.070 0.025~0.080 |
Al |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
0.02 0.02 |
Ti |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
0.01 0.01 |
Zr |
熔炼分析 成品分析 |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
... ... |
0.01 0.01 |
项目 | 2和12级 | 11级 | 22、21、5、9、21L、22L级 |
抗拉强度,ksi(MPa) | 55~80(380~550) | 60~85(415~585) | 60~85(415~585) |
屈服强度,ksi(MPa) | ≥33(230) | ≥35(240) | ≥30(205) |
伸长率(标距8in.或200mm),%① | ≥18 | ≥19 | ... |
伸长率(标距2in.或50mm),%① | ≥22 | ≥22 | ≥18 |
断面收缩率,% | ... | ... |
≥45② ≥40③ |
项目 | 2级 | 11级 | 12级 | 22、21、5、9级 | 91级 |
抗拉强度,ksi(MPa) | 70~90(485~620) | 75~100(515~690) |
65~85 (450~585) |
75~100 (515~690) |
85~110(585~760) |
屈服强度(0.2%残余变形),ksi(MPa) | ≥45(310) | ≥45(310) | ≥40(275) | ≥45(310) | ≥60(415) |
伸长率②(标距8in.或200mm),%① | ≥18 | ≥18 | ≥19 | ... | ... |
伸长率②(标距2in.或50mm),%① | ≥22 | ≥22 | ≥22 | ≥18 | ≥18 |
断面收缩率,% | ... | ... |
≥45② ≥40③ |
... |