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ASTM A335/ASME SA335 Standard Specification for Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service |
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Standard: ASTM A335, ASME SA335
Equivalent Standards: EN 10216-2, ASTM A213, ASME SA213, GOST 550-75, NBR 5603 |
Material: P9, S50400
Equivalent Material: T9, 12Cr9Mo, STBA26, X11CrMo9-1, X12CrMo91 |
Chemistry Composition |
C, % |
Mn, % |
P, % |
S, % |
Si, % |
Cr, % |
Mo, % |
0.15 max |
0.30-0.60 |
0.025 max |
0.025 max |
0.25-1.00 |
8.0-10.0 |
0.90-1.10 |
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Mechanical Properties |
Tensile Strength , MPa |
Yield Strength, MPa |
Elongation, % |
415 min |
205 min |
30 min |
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Outside Diameter & Tolerance |
ASTM A450 |
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 |
ASTM A530 & ASTM A335
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NPS |
Outside Diameter, inch |
Tolerance, mm |
1/8≤OD≤1-1/2 |
±0.40 |
1-1/2<OD≤4 |
±0.79 |
4<OD≤8 |
+1.59/-0.79 |
8<OD≤12 |
+2.38/-0.79 |
OD>12 |
±1% |
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Wall thickness & Tolerance |
ASTM A450
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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 |
ASTM A530
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NPS
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Outside Diameter, inch |
Tolerance, % |
1/8≤OD≤2-1/2 |
+20.0/-12.5 |
3≤OD≤18, WT/OD≤5% |
+22.5/-12.5 |
3≤OD≤18, WT/OD>5% |
+15.0/-12.5 |
OD≥20, WT/OD≤5% |
+22.5/-12.5 |
OD≥20, WT/OD>5% |
+15.0/-12.5 |
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ASTM A335/A335M specification covers nominal wall and minimum wall seamless ferritic alloy-steel pipe intended for high temperature service. Pipe ordered to ASTM A335/A335M specification shall be suitable for bending, flanging (vanstoning), and similar forming operations, and for fusion welding. |
Manufacture: pipes shall be made by the seamless process and shall be either hot finished or cold drawn with the finishing treatment.
Heat Treatment: full or isothermal anneal, normalize and temper.
Inspection & Test: chemistry composition analysis, tensile test, hardness test, flattening test, flaring test, NDT, surface inspection and dimension check. |
Length: 5800mm; 6000mm; 6096mm; 11800mm; 12000mm; and so on.
Max length: 16000mm; Max outside diameter: 1750mm; Max wall thickness: 150mm; finning and studded process can be provided.
Option: shot blasting on the outside surface to remove mill scale, make the surface matte colour; surface polishing as preparation work done for further processing, for instance finning. |
Download ASTM A335 P9 Product Manual |
Keyword: Seamless Ferritic Alloy Steel Pipe, High Pressure Steel Pipe, Boiler Steel Pipe, ASME SA335, P9, ASTM A335 |
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