SA-213/SA-213M Specification for seamless Ferritic Alloy steel boiler, Superheater and heat exchanger tubes
Delivery Condition: Normalized and Tempered
Inspections and Tests Performed: Chemical Composition Inspection, Mechanical Properties Test(Tensile Strength, Yield Strength, Elongation, Flaring, Flattening, Bending, Hardness, Impact Test), Surface and Dimension Test, No-destructive Test, Hydrostatic Test.
Surface treatment: Oil-dip, Varnish, Passivation, Phosphating, Shot Blasting
Inner packing: Caps on two ends of every pipe
Package: bare packing/bundle packing/wooden carton packing.
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Size Tolerance |
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Tube Kinds |
SA213 OD（D） |
SA213 Thickness（S） |
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OD（mm） |
OD Tolerance（mm） |
OD（mm） |
Thickness Tolerance（mm） |
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Hot Rolled |
≤101.6 |
+0.4～-0.8 |
76～168.3 |
+28%～0 |
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>101.6～168.3 |
+0.4～-1.2 |
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Cold Drawn |
<25.4 |
0.1 |
≤38.1 |
+20%～0 |
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25.4～38.1 |
0.15 |
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>38.1～<50.8 |
0.2 |
>38.1 |
+22%～0 |
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50.8～<63.5 |
0.25 |
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63.5～<76.2 |
0.3 |
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76.2～101.6 |
0.38 |
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>101.6～190.5 |
+0.38～-0.64 |
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>190.5～228.6 |
+0.38～-1.14 |
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Grade |
Tensile Strength,Min., ksi[MPa] |
Yield Strength,Min., ksi[MPa] |
Elongation |
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T12 |
60 [415] |
32 [220] |
30 |
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T23 |
74 [510] |
58 [400] |
20 |
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T91 |
85 [585] |
60 [415] |
20 |
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T92 |
90 [620] |
64 [440] |
20 |
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T122 |
90 [620] |
58 [400] |
20 |
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18Cr-2Mo |
60 [415] |
40 [275] |
20 |
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NOTES: |
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(1) When standard round 2 in. or 50 mm gage length or smaller proportionally sized specimens with gage length equal to 4D (4 |
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times the diameter) is used, the minimum elongation shall be 22% for all ferritic grades except 18Cr-2Mo, T23 and T91. |
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(2) For longitudinal strip tests, a deduction from the basic minimum |
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CHEMICAL REQUIREMENTS FOR FERRITIC STEEL |
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Composition, % |
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Grade |
Carbon |
Manganese |
Phosphorus, Max. |
Sulfur, Max |
Silicon |
Chromium |
Molybdenum |
Titanium |
Vanadium,Min. |
Other Elements |
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T2 [Note (1)] |
0.10–0.20 |
0.30–0.61 |
0.025 |
0.025 |
0.10–0.30 |
0.50–0.81 |
0.44–0.65 |
. . . |
. . . |
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T5 |
0.15 max. |
0.30–0.60 |
0.025 |
0.025 |
0.50 max. |
4.00–6.00 |
0.45–0.65 |
. . . |
. . . |
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T5b |
0.15 max. |
0.30–0.60 |
0.025 |
0.025 |
1.00–2.00 |
4.00–6.00 |
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