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ASTM A789 Standard Specification for Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service |
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Standard: ASTM A789, ASME SA789
Equivalent Standards: DIN 17458, GOST 9941-81, GOST 9940-81, EN 10216-5, ASTM A790, ASME SA790, DIN 17456 |
Material: S31500
Equivalent Material: X2CrNiMoSi18-5-3, 1.4424, SAF1805 |
| Chemistry Composition |
C, % |
Si, % |
Mn, % |
P, % |
S, % |
Cr, % |
Ni, % |
Mo |
N, % |
0.03 max |
1.4-2.0 |
1.2-2.0 |
0.03 max |
0.03 max |
18.0-19.0 |
4.5-5.2 |
2.5-3.0 |
0.05-0.10 |
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| Mechanical Properties |
Tensile Strength , MPa |
Yield Strength, MPa |
Elongation, % |
Hardness, HB |
630 min |
440 min |
30 min |
290 max |
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| Outside Diameter & Tolerance |
Hot rolled |
Outside Diameter, mm |
Tolerance, mm |
OD≤101.6 |
+0.4/-0.8 |
101.6＜OD≤190.5 |
+0.4/-1.2 |
190.5＜OD≤228.6 |
+0.4/-1.6 |
Cold Drawn |
Outside Diameter, mm |
Tolerance, mm |
OD＜25.4 |
±0.10 |
25.4≤OD≤38.1 |
±0.15 |
38.1＜OD＜50.8 |
±0.20 |
50.8≤OD＜63.5 |
±0.25 |
63.5≤OD＜76.2 |
±0.30 |
76.2≤OD≤101.6 |
±0.38 |
101.6＜OD≤190.5 |
+0.38/-0.64 |
190.5＜OD≤228.6 |
+0.38/-1.14 |
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| Wall thickness & Tolerance |
Hot rolled
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Outside Diameter, mm |
Tolerance, % |
OD≤101.6, WT≤2.4 |
+40/-0 |
OD≤101.6, 2.4＜WT≤3.8 |
+35/-0 |
OD≤101.6, 3.8＜WT≤4.6 |
+33/-0 |
OD≤101.6, WT>4.6 |
+28/-0 |
OD>101.6, 2.4＜WT≤3.8 |
+35/-0 |
OD>101.6, 3.8＜WT≤4.6 |
+33/-0 |
OD>101.6, WT>4.6 |
+28/-0 |
Cold Drawn
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Outside Diameter, mm |
Tolerance, % |
OD≤38.1 |
+20/-0 |
OD>38.1 |
+22/-0 |
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Length: 5800mm; 6000mm; 8000mm; 10000mm; 11800mm; and so on.
Max length: 18000mm, also U bending can be offered. |
| Keyword: stainless steel tube, stainless steel pipe, heat exchanger steel tube, ASTM A789 |
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