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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 | ... |