DIN 17240-1976 螺栓和螺母用耐热和高耐热材料质量规范
牌号和化学成分
用户可以接受与规定的成分界限有轻微的偏差,但对材料的使用性能不能产生显著影响。成品分析允许偏差见表2。
保证成品分析满足表1规定的熔炼分析界限值要求,还是在表2规定的允许偏差范围内,可在订货时协商。
表1 牌号和化学成分(熔炼分析)
牌号 | 材料号 | C | Si | Mn | P ≤ | S ≤ | Al | B | Cr | Mo | Ni | Ti | V | 其他 |
C35 | 1.0501 | 0.32~0.39 | 0.15~0.35 | 0.50~0.80 | 0.045 | 0.045 | ||||||||
Ck35 | 1.1181 | 0.32~0.39 | 0.15~0.35 | 0.50~0.80 | 0.035 | 0.035 | ||||||||
Cq35 | 1.1172 | 0.32~0.39 | 0.15~0.40 | 0.50~0.80 | 0.035 | 0.035 | ||||||||
24CrMo5 | 1.7258 | 0.20~0.28 | 0.15~0.35 | 0.50~0.80 | 0.030 | 0.035 | 0.90~1.20 | 0.20~0.35 | ||||||
21CrMoV5 7 | 1.7709 | 0.17~0.25 | 0.15~0.35 | 0.35~0.85 | 0.030 | 0.035 | 1.20~1.50 | 0.65~0.80 | 0.25~0.35 | |||||
40CrMoV4 7 | 1.7711 | 0.36~0.44 | 0.15~0.35 | 0.35~0.85 | 0.030 | 0.035 | 0.90~1.20 | 0.60~0.75 | 0.25~0.35 | |||||
X22CrMoV12 1 | 1.4923 | 0.18~0.24 | 0.10~0.50 | 0.30~0.80 | 0.035 | 0.035 | 11.0~12.5 | 0.80~1.20 | 0.30~0.80 | 0.25~0.35 | ||||
X19CrMoVNb11 1 | 1.4913 | 0.16~0.22 | 0.10~0.50 | 0.30~0.80 | 0.035 | 0.035 | ≤0.010 | 10.0~11.5 | 0.50~1.00 | 0.30~0.80 | 0.10~0.30 | Nb0.05~0.05 N0.05~0.10 | ||
X8CrNiMoBNbl6 16 | 1.4986 | 0.04~0.10 | 0.30~0.60 | ≤1.5 | 0.045 | 0.030 | 0.05~0.10 | 15.5~17.5 | 1.60~2.00 | 15.5~17.5 | Nb+Ta: 10×C~1.20 | |||
N1Cr20TiAl | 2.4952 | ≤0.10 | ≤1.00 | ≤1.00 | 0.030 | 0.O15 | 1.00~1.80 | ≤0.008 | 18.0~21.0 | ≥65 | 1.8~2.7 | Co≤2.00 Fe≤3.00 |
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