1、000.0250.400。G17CrMo5573570.150.20501。001。500.450.65G17CrMo91073790.130。500。902。002.50901。G12CrMoV5-277200.100。1545700.300.50400.60V0.220。30Sn0.025G17CrMoV5-107706150。0.500。0.015201.500.901。10V0.200。Sn0。025GX15CrMo573650.120.19800.500.804.006.00450.65GX8CrNi121.41070.10400.500.8011.512。50.801。GX4CrN
2、13-41.43170.061.000.03512.013。3.505.000.70GX23CrMoV12-11.4931200。26500。11.312。2001.20V0。250.35W0。GX4CrNiMo16-5-11.44050603515.017.04。006。500.70s b.室温和高温用承压铸钢的热处理与力学性能,见表5140.表5140 室温和高温用承压铸钢的热处理与室温力学性能钢号热处理铸件厚度/mm 室温力学性能代号正火或淬火温度/回火温度/b/MPas /MPa() A KV /J1.0621+N9009801004206002402227420600+QT89098
3、06007000625480640280890980359209806507304405902451.73579209606807304906903151.737993097068074015049074040018G12CrMoV529501000680720510660195171.77065907804401.7365930990630760420164107+QT110001060680730300540690355+QT2600680600800500431710001050590630760960550493110301080700750740880540GX4CrNiMo16-5
4、110201070580630760960 热处理代号:N正火;Q淬火,冷却介质:液体或空冷;T回火. 屈服点或屈服强度 c.室温和高温用承压铸钢的高温屈服强度,见表5-141。表5141 室温和高温用承压铸钢的高温屈服强度铸件厚度/mm下列温度的高温屈服强度0.2/MPa100200300400500550210175145130250220190160165135G17CrMo5-52302002443451.7720264385214194144G17CrMoV5103653352603903803703052752652554105154854553402904504304405 热处
5、理代号:N正火;Q淬火,T回火。热处理温度同表5-140。 (2)英国BS标准低温用承压铸钢BS EN 10213-31995 a.低温用承压铸钢的钢号与化学成分,见表5142表5-142 低温用承压铸钢的钢号与化学成分 (质量分数)()G17Mn51.1131150。001。G20Mn56220170。231.001。G18Mo554220.801。G9Ni101.5636060.12500.800152.003.00G17NiCrMo1361.67810.150。190.500.550.801.301.803.003.50450。65G9Ni145638060。123.004。GX3CrN
6、i13469820512.013.03.505。 b. 低温用承压铸钢的热处理与力学性能,见表5143.表5-143 低温用承压铸钢的热处理与力学性能室温拉力性能冲击吸引功代号s (%) 温度11314506002440900980480620-30890940610660500650-4065073044079045830890600650480630G17NiCrMo13-66781890930600640750900600701.5638820900590640500650360-801.6982670690+590620700900120 (3)英国BS标准奥氏体型和奥氏体铁素体型承压
7、铸钢BS EN 102134-1995 a.奥氏体型和奥氏体-铁素体型承压铸钢的钢号与化学成分,见表5-144。表5144 奥氏体型和奥氏体-铁素体型承压铸钢的钢号与化学成分(质量分数)()GX2CrNi19-1143091.502.0018。0020。9。0012.00N0。GX5CrNi19-101.43080704018.0020.008。0011。GX5CrNiNb19-111.45520.0409.0012。Nb800 GX2CrNiMo19-1121.44090.0302。18.0020.002.002。GX5CrNiMo191121.44080020.00GX5CrNiMoNb1
8、9-1121.45819.0012.001.00 GX2CrNiMo28202445819.0022.0026.0030.002.002.50Cu2。GX2CrNiMoN22531.447021.0023.004.506。503.50N0.12GX2CrNiMoCuN25-6-33451724。5026.005.007。503.50Cu2.753。N0.120.22GX2CrNiMoN26-7-4446925.0027.006.008。3.005。Cu1。N0。12 b.奥氏体型和奥氏体-铁素体型承压铸钢的热处理与力学性 表5-145表5-145 奥氏体型和奥氏体铁素体型承压铸钢的热处理与力学
9、性钢号数字牌号热处理温度/ 1。 /MPaA KV GX2CrNi19111050115044064080GX5CrNi19-1160GX5CrNiNb191110501150440640GX2CrNiMo19112440910801150GX5CrNiMo1911-24408GX5CrNiMoNbN1911-24581GX2CrNiMo2820-21.445811001180430630GX2CrNiMoN22-5-3447011201150GX2CrNiMoCuN25-63311201150650850480504469S11401180 各钢号的热处理均为固溶水淬处理。 时效硬化的奥氏体
10、型和奥氏体铁素体型承压铸钢可进行固溶水淬处理。 表中A KV值均为室温测定值. 经供需双方同意,下列钢号(数字牌号)的低温A KV值为: 1.4517,1。4469的A KV值为35J(-70C) 1。4308,1.4408,1.4458的A KV值为60J(-196C) 1.4309,1.4409的A KV值为70J(-196C) c。奥氏体型和奥氏体-铁素体型承压铸钢的高温屈服强度,见表 5146。表 5-146 奥氏体型和奥氏体-铁素体型承压铸钢的高温屈服强度下列温度的高温屈服强度0.2/MPa110GX5CrNi191143081254552120GX2CrNiMo19-11-2115105170GX5CrNiMoNbN1911218511201150330 GX2CrNiMoCuN256-3-31.4517GX2CrNiMoN267411401180 0.2值与0.1下限值相差约25MPa。 奥氏体型和奥氏体-铁素体型承压铸钢通常用于不超过250的压力容器。
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