DIN172401976螺栓和螺母用耐热和高耐热材料质量规范

1、DIN 17240-1976 螺栓和螺母用耐热和高耐热材料质量规范 创建时间：2008-12-24 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钢的牌号和化学成分(熔炼分析)见表1。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CSiMnPSAlBCrMoNiTiV其他C351.05010.320.390.150.350.500.800.0450.045Ck351.11

2、810.320.390.150.350.500.800.0350.035Cq351.11720.320.390.150.400.500.800.0350.03524CrMo51.72580.200.280.150.350.500.800.0300.0350.901.200.200.3521CrMoV5 71.77090.170.250.150.350.350.850.0300.0351.201.500.650.800.250.3540CrMoV4 71.77110.360.440.150.350.350.850.0300.0350.901.200.600.750.250.35X22CrMoV1

3、2 11.49230.180.240.100.500.300.800.0350.03511.012.50.801.200.300.800.250.35X19CrMoVNb11 11.49130.160.220.100.500.300.800.0350.0350.01010.011.50.501.000.300.800.100.30Nb0.050.05N0.050.10X8CrNiMoBNbl6 161.49860.040.100.300.601.50.0450.0300.050.1015.517.51.602.0015.517.5Nb+Ta: 10C1.20N1Cr20TiAl2.49520.

4、101.001.000.0300.O151.001.800.00818.021.0651.82.7Co2.00Fe3.00制造方法除非在订货时另有协议，材料的熔炼方法由生产厂自行决定。但是，如果要求，必须向用户说明。力学性能棒材和丝材热处理状态的纵向室温和高温力学性能见表4和表5及图1。材料的高温持久强度性能和应力松弛性能见表9和表10或图3图6。材料的静弹性模量与温度的关系见表6和图2。物理性能材料的密度，热膨胀、热导率和比热容见表7。表面状态产品应有光滑的表面符合所使用的成形方法的要求。不允许用焊接方法消除表面缺陷。表2 钢棒的分析与熔炼分析界限值的允许偏差元素熔炼分析允许的最大含量%铜棒

5、的分析与熔炼分析界限值的允许偏差，%C100160440420412382392372363344333324304294275265235226-21CrMoV5 71.7709V250550500480460441412372334275-40CrMoV4 71.7711V100700635617598578HO500460403-X22CrMoV12 11.4923V250500700530603505578480550452515423485382442344392284329200250-X19CrMoVNbN11 11.4913V25078070068065562058053047

6、0400315-X8CrNiMoBNb16 161.4986(WK + AL)100500432412393372353334314284255206NiCr20TiAl2.4952(AH)100160440420412382392372363344333324304294275265235226-21CrMoV5 71.7709V250550500480460441412372334275-40CrMoV4 71.7711V100700635617598578HO500460403-X22CrMoV12 11.4923V250500700530603505578480550452515423

7、485382442344392284329200250-X19CrMoVNbN11 11.4913V250780700680655620580530470400315-X8CrNiMoBNb16 161.4986(WK + AL)100500432412393372353334314284255206NiCr20TiAl2.4952(AH)1606005S85645605505405305205105004801)见表3和表8。2)对非合金和低合金铁素体-珠光体钢，屈服点或0.2%屈服应力(当屈服点不能明确测定时)可作为标准，但对其他材料只为0.2%屈服应力。3)处于与蠕变极限曲线相交点以上的

8、温度值为参考值，不进行检验。表6 材料的静弹性模量参考值材料组下列温度的静弹性模量2010020030040045050055O600700800103MPa铁素体组(1.0501，1.1181，1.1172，1.7258， 1.7709，1.7711)211204196186177172164152127-含12%Cr以上的钢(1.4923，1.4913)216209200190170175167157127-奥氏体铜(1.4086)196192186181174170165161157147-NiCr2OTiAl216212208202196193189184179161130表7 材料的

9、物理性能参考值牌号材料号20密度kg/dm320和下列温度间的热膨胀系数(平均)热导率(平均)比热容100200300400500600700800W/kmJ/kgk10-6K-1C35Ck35Cq351.05011.11811.11727.8511.112.112.913.513.914.120422046024CrMo521CrMoV5 740CrMoV4 71.72581.77091.7711203320460X22CrMoV12 1X19CrMoVNbN11 11.49231.49137.710.51111.51212.312.52020 to 652429200 to 8004605

10、40X8CiNiMoBNb16 161.49867.916.617.717.917.917.918.118.318.5201525200 to 800460650590NiCr20TiAl2.49528.211.912.613.113.513.714.014.515.120100900131228200 to 800460590在大多数情况下，这些值是单个炉号的测量结果，当进一步试验得到时，预定作为标准值，需要校正原有值。表8 材料的热成形和热处理资料牌号材料号热成型硬化，淬火或固溶处理冷却介质回火或时效硬化或沉淀硬化消除应力退火C35Ck35Cq351.O5011.11811.1172110

11、0850870900油650710,最少2h55062024CrMoS21CrMoV5 740CrMoV4 7X22CrMoV12 1XlSCrMoVNbN11 1X8CrNiMoBNb16 161.72581.77091.77111.49231.49131.49861100850110085011008501100850110085011508509009508909408809301020107011001150-油或空气油或空气油(或空气)油或空气油或空气-650710,最少2h680720,最少2h670730最少2h640720,最少2h670750,最少2h750800,51h空气550620580550570640600680630710750800NiCr2OTiAl2.49521150105010501080,8h空气840860，24h/空气和690710，16h/空气-1)热成形温度是参考值，