00.00..照、0.2D.(.O0~2.OM000.1O1M0S5、7O.04V.E0/O5015.55 新旧低合金钢的标准牌号对照4.100.O7ON~4G2200.3N1、C004VO0003~.50旧P40T001.05E02.6、u0O 新标准GB/T159l—1994 | 旧标准GB1591一88 | Q295 | 09MnV、09MnNb、09Mn2、12Mn | Q345 | 18Nb、09MnCuPTi、10MnSiCu、12MnV、14MnNb、16Mn、16MnRE | Q390 | 10MnPNbRE、15MnV、15MnTi、16MnNb | Q420 | 14MnVTiRE、15MnVN | Q460 | |
.0标Q0.3~0..M.1~565.O63OO00R5.TO79n4、M.~O0QM59CTP4C.0C0~、 O2标O201.2.002500OO0.0205E.1107.SE6OP~20R006.0.1O50.OO质7. 牌号 | 等 级 | 化学成分(质量分数)(%) | C≤ | Mn | Si ≤ | P ≤ | S ≤ | V | Nb | Ti | Al≥ | Cr≤ | Ni≤ | Q295 | A | O.16 | 0.80 ~1.50 | 0.55 | 0.045 | 0.045 | 0.02 ~O.15 | 0.015 ~O.060 | O.02 ~0.20 | | | | B | 0.040 | O.040 | | | | Q345 | A | O.20 | 1.00 ~1.60 | 0.55 | 0.045 | O.045 | 0.02 ~O.15 | 0.015 ~O.060 | 0.02 ~O.20 | | | | B | O.040 | O.040 | | | | C | 0.035 | 0.035 | O.015 | | | D | O.18 | 0.030 | O.030 | O.015 | | | E | 0.025 | O.025 | O.015 | | | Q390 | A | 0.20 | 1.00 ~1.60 | O.55 | 0.045 | 0.045 | O.02 ~O.20 | O.015~ 0.060 | O.02 ~O.20 | | O.30 | 0.70 | B | O.040 | O.040 | | O.30 | O.70 | C | O.035 | O.035 | O.015 | 0.30 | O.70 | D | O.030 | 0.030 | 0.015 | O.30 | 0.70 | E | 0.025 | O.025 | O.015 | O.30 | 0.70 | Q420 | A | O.20 | 1.00 ~ 1.70 | O.55 | O.045 | O.045 | O.02 ~0.20 | O.015 ~0.060 | 0.02 ~O.20 | | O.40 | O.70 | B | 0.040 | O.040 | | O.40 | O.70 | C | O.035 | O.035 | 0.015 | 0.40 | O.70 | D | O.030 | 0.030 | 0.015 | O.40 | O.70 | E | 0.025 | 0.025 | 0.015 | O.40 | O.70 | Q460 | C | O.20 | 1.00 ~ 1.70 | O.55 | 0.035 | 0.035 | 0.02 ~0.20 | 0.015 ~O.060 | 0.02 ~O.20 | O.015 | O.70 | 0.70 | D | O.030 | 0.030 | 0.015 | 0.70 | 0.70 | E | 0.025 | O.025 | O.015 | 0.70 | 0.70 |
、.0O1201C.O.4051一.T.0003~.O.O7.0..M100G0010)66u1n5OM9690 |
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