GBT结构用不锈钢无缝钢管参数

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1、GBT结构用不锈钢无缝钢管参数3 .结构用不锈钢无缝钢管(GB/T14975-1994)(1)尺寸规格6-17,6-18(2)允许偏差6-20(3)牌号和化学成分6-19(4)力学性能6-21(5)用途适于一般结构及机械结构用表6- 17结构用不锈钢热压(挤，扩)无缝钢管的尺寸规格外径壁厚4.5101112131415161718192022242526286870737680838995102108114121127133140146152159168180194219245237325351377注：表示热轧钢管规格。表6-18结构用不锈钢冷拔(轧)无缝钢管的尺寸规格L.01.21.41.

2、51.62.02.22.52.83.03.23.54.04.55.05.56.06.57.07.58.09.09.510111213管管15mm15mm管注：1.表示冷拔（轧）钢管规格。2钢管的通常长度规定如下：热轧（挤，扩）钢冷拔（轧）钢3钢管的弯曲度不得大于如下规定：壁厚m/m壁厚mm/m热扩212.18m.1.5m.2.0.3.0mm/m表 6-19 结构用不锈钢无缝钢管的牌号和化学成分牌号化学成分（质量分数）（%）CSiMnPSNiCrMo0Crl8Ni90.071.002.000.0350.0308.0011.0017.0019.00一lCrl8Ni90.151.002.000.03

3、50.0308.0010.0017.0019.00一00Crl9Nil00.0301.002.000.0350.0308.0012.0018.0020.00一0Crl8Nil0Ti0.081.002.000.0350.0309.0012.0017.0019.00T0Crl8NillNb0.081.002.000.0350.0309.0013.0017.0019.00一Nb0Crl7Nil2Mo20.081.002.000.0350.03010.0014.0016.0018.502.003.0000Crl7Nil4Mo20.0301.002.000.0350.03012.0015.0016.00

4、18.002.003.000Crl8Nil2Mo2Ti0.081.002.000.0350.03011.0014.0016.0019.001.802.50Ti5lCrl8Nil2Mo2Ti0.121.002.000.0350.03011.0014.0016.0019.001.802.50T0.(0Crl8Nil2Mo3Ti0.081.002.000.0350.03011.0014.0016.0019.002.503.50Ti5lCrl8Nil2Mo3Ti0.121.002.000.0350.03011.0014.0016.0019.002.503.50T0.01Cr18Ni9Ti0.081.0

5、02.000.0350.0308.0011.0017.0019.00T0.00Cr19Ni13Mo30.081.002.000.0350.03011.0015.0018.0020.003.004.0000Cr19Ni13Mo30.0301.002.000.0350.03011.0015.0018.0020.003.004.000Cr130.080.600.800.0350.030*12.0014.00一1Cr170.120.751.000.0350.030*16.0018.001Cr130.151.001.000.0350.030*11.5013.50一2Cr130.160.251.001.0

6、00.0350.030*12.0014.00注：*残余元素NiW0.60。表 6-20 结构用不锈钢无缝钢管的尺寸允许偏差热压（挤，扩）钢管冷拔（轧）钢管尺寸/mm允许偏差/mm尺寸/mm允许偏差/mm普通级较咼级普通级较咼级外径D68WDW1591.251外径D10WDW300.300.20159DW426土1.53050.9%0.8%土15+ 1512.5W33+ 12%-10%10%注：供机械加工用钢管应在合同中注明，根据需方要求，经供需双方协议，可规定机械加工余量。表 6-19 结构用不锈钢无缝钢管的牌号和化学成分CSiMnPSNiCrMo其18Ni90.071.002.000.035

7、0.0308.0011.0017.0019.00一18Ni90.151.002.000.0350.0308.0010.0017.0019.00一r19Ni100.0301.002.000.0350.0308.0012.0018.0020.00一18Ni10Ti0.081.002.000.0350.0309.0012.0017.0019.00一Ti18Ni11Nb0.081.002.000.0350.0309.0013.0017.0019.00一Nb17Ni12Mo20.081.002.000.0350.03010.0014.0016.0018.502.003.00r17Ni14Mo20.030

8、1.002.000.0350.03012.0015.0016.0018.002.003.0018Ni12Mo2Ti0.081.002.000.0350.03011.0014.0016.0019.001.802.50Ti5C%牌号化学成分（质量分数）（%）18Nil2Mo2Ti0.121.002.000.0350.03011.0014.0016.0019.001.802.50Ti50.02)18Nil2Mo3Ti0.081.002.000.0350.03011.0014.0016.0019.002.503.50Ti5C%18Nil2Mo3Ti0.121.002.000.0350.03011.00

9、14.0016.0019.002.503.50Ti50.02)18Ni9Ti0.081.002.000.0350.0308.0011.0017.0019.00Ti50.02)19Nil3Mo30.081.002.000.0350.03011.0015.0018.0020.003.004.00rl9Nil3Mo30.0301.002.000.0350.03011.0015.0018.0020.003.004.00130.080.600.800.0350.030*12.0014.00一170.120.751.000.0350.030*16.0018.00130.151.001.000.0350.0

10、30*11.5013.50一130.160.251.001.000.0350.030*12.0014.00一注：*残余元素NiW0.60。表6-21结构用不锈钢无缝钢的力学性能组织类 型序号牌号推荐热处理制度力学性能密度(g/cm(3)工b/MPao0.2/MPa5 5(%)奥氏体 形10Cr18Ni910101150 C,520205357.9321Cr18Ni910101150 C,520205357.90300Cr19Ni1010101150 C,480175357.9340Cr18Ni10Ti9201150 C,520205357.9550Cr18Ni11Nb9801150 C,520

11、205357.9860Cr17Ni14Mo210101150 C,520205357.98700Cr17Ni14Mo210101150 C,480175357.9880Cr18Ni12Mo2Ti10001100 C,530205358.0091Cr18Ni12Mo2Ti10001100 C,530205358.00100Cr18Ni12Mo3Ti10001100 C,530205358.10111Cr18Ni12Mo3Ti10001100 C,530205358.10121Cr18Ni9Ti10001100 C,520205357.90130Cr19Ni13Mo310101150 C,520205357.981400Cr19Ni13Mo310101150 C,480175357.98150Cr13780830 C,370180227.70161Cr17780850 C,410245207.70171Cr13800900 C,410205207.70182Cr13800900 C,470215197.70注：1.热积压管的抗拉强度允许降低20MPa2钢管经热处理并酸洗交货。凡经整体磨，镗火警保护气氛热处理的钢管，可不经酸洗交货3供机械加工用钢管可不经酸洗交货。