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  7. 317 317L 1.4449 1.4438 Stainless Steel Pipe

TP317/317L, 1.4449, 1.4438

317/317L stainless steel (UNS S31700/S31703, EN 1.4438/1.4449) is a high-molybdenum austenitic alloy offering superior corrosion resistance compared to standard 316 grades. With increased chromium, nickel, and molybdenum content, it delivers exceptional performance in aggressive environments.

ANSI/ASME B36.19 DIMENSION

Nominal SizeODWall Thickness, SCHEDULE
NPSDNmm5S10S10203040SSTD4080SXS80100120140160XXS
1∕8"610.31.241.731.731.732.412.412.41
1∕4"813.71.652.242.242.243.023.023.02
3∕8"1017.21.652.312.312313.23.23.2
1∕2"1521.31.652.112.772.772.773.733.733.734.787.47
3∕4"2026.71.652.112.872.872.873.913.913.915.567.82
1"2533.41.652.773.383.383.384.554.554.556.359.09
1-1∕4"3242.21.652.773.563.563,564.854.854.856.359.7
1-1∕2"4048.31.652.773.683.683.685.085.085.087.1410.15
2"5060.31.652.773.913.913.915.545.545.548.7411.07
2-1∕2"65732.113.055.165.165.167.017.017.019.5314.02
3"8088.92.113.055.495.495.497.627.627.6211.1315.24
3-1∕2"90101.62.113.055.745.745.748.088.088.08
4"100114.32.113.056.026.026.028.568.568.5411.1313.4917.12
5"125141.32.773.46.556.556.559.539,539.5312.715.8819.05
6"150168.32.773.47.117.117.1110.9710.9710.9714.2718.2621.95
8"200219.12.773.766.357.048.188.188.1812.712.712.715.0918.2620.6223.0122.23
10"250273.13.44.196.357.89.279.279.2712.712.715.0918.2621.4425.428.5825.4
12"300323.93.964.576.358.389.539.5310.3112.712.717.4821.4425.428.5833.3225.4
14"350355.63.964.786.357.929.539.5311.1312.719.0523.8327.7931.7535.71
16"400406.44.194.786.357.929.539.5312.712.721.4426.1930.9536.5340.49
18"450457.24.194.786.357.9211.139.5314.2712.723.8329.3634.9339,6745.24
20"5005084.785.546.359.5312.79.5315.0912.726.1932.5438.144.4550.01
22"550558.84.785.546.359.5312.79.5312.728.5834.9341.2847.6353.98
24"600609.65.546.356.359.5314.279.5317.4812.730.9638.8946.0252.3759.54
26"650660.47.9212.79.5312.7
28"700711.27.9212.715.889.5312.7
30"7507626.357.927.9212.715.889.5312.7
32"800812.87.9212.715.8817.489.5317.4812.7
34"850863.67.9212.715.8817.489.5317.4812.7
36"900914.47.9212.715.8819.059.5319.0512.7
38"950965.2-9.5312.7
40"10001016-9.5312.7

Chemical Composition %

ElementCCrNiMoMnSiN
317 (S31700)≤0.0818.0-20.011.0-15.03.0-4.0≤2.00≤0.75
317L (S31703)≤0.0318.0-20.011.0-15.03.0-4.0≤2.00≤0.75
EN 1.4438≤0.0717.5-19.513.0-15.03.0-3.5≤2.00≤0.75≤0.11
EN 1.4449≤0.0318.5-20.513.5-17.54.0-5.0≤2.00≤0.70≤0.11

Mechanical Propertoes

 Tensile Strength (MPa)Yield Strength (MPa)Elongation (%)Hardness (HB)
317≥515≥205≥40≤217
317L≥485≥170≥40≤217
EN 1.4438≥490≥220≥40≤220
EN 1.4449≥490≥220≥40≤220

317 Stainless Steel Pipe 317 Stainless Steel Pipe 317 Stainless Steel Pipe 317 Stainless Steel Pipe 317 Stainless Steel Pipe 317 Stainless Steel Pipe 317 Stainless Steel Pipe 317 Stainless Steel Pipe

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