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ASTM A312 Chemical Composition
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Standard & Grade |
Chemical Composition (%) |
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|
Carbon (C) |
Silicon (Si) |
Manganese (Mn) |
Phosphorus (P) |
Sulfur (S) |
Nickel (Ni) |
Chromium (Cr) |
Molybdenum (Mo) |
Carbon (C) |
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|
ASTM A312 A312M |
TP304 |
≤ 0.080% |
≤ 1.00% |
≤ 2.00% |
≤ 0.045% |
≤ 0.030% |
8.0-11.0% |
18.0-20.0% |
- |
≤ 0.080% |
|
TP304L |
≤ 0.035% |
≤ 1.00% |
≤ 2.00% |
≤ 0.045% |
≤ 0.030% |
8.0-13.0% |
18.0-20.0% |
- |
≤ 0.035% |
|
|
TP316 |
≤ 0.080% |
≤ 1.00% |
≤ 2.00% |
≤ 0.045% |
≤ 0.030% |
10.0-14.0% |
16.0-18.0% |
2.0-3.0% |
≤ 0.080% |
|
|
TP316L |
≤ 0.035% |
≤ 1.00% |
≤ 2.00% |
≤ 0.045% |
≤ 0.030% |
10.0-14.0% |
16.0-18.0% |
2.0-3.0% |
≤ 0.035% |
|
ASTM A312 Pipe Heat Treating Condition
|
ASTM A312 | ASME SA312 |
|
|
Grade |
Annealing Requirement |
|
TP304 |
1040℃ min., Water Quenching |
|
TP304L |
1040℃ min., Water Quenching |
|
TP316 |
1040℃ min., Water Quenching |
|
TP316L |
1040℃ min., Water Quenching |
ASTM A312 Pipe Dimensions
|
Seamless Stainless Steel Piping for Heat- Exchanger General Service & Sanitary Piping |
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|
Item Standard |
Nominal Diameter (NPS) |
Outside Diameter (mm) |
Wall Thickness (mm) |
|
ASTM A312 | ASME SA312 |
1/8 |
10.29 |
1.24, 1.73, 2.41 |
|
1/4 |
13.72 |
1.65, 2.24, 3.02 |
|
|
3/8 |
17.15 |
1.65, 2.31, 3.20 |
|
|
1/2 |
21.34 |
2.11, 2.77, 3.73 |
|
|
3/4 |
26.67 |
2.11, 2.87, 3.91 |
|
|
1 |
33.4 |
2.77, 3.38, 4.55 |
|
|
1 1/4 |
42.16 |
2.77, 3.56, 4.85 |
|
|
1 1/2 |
48.26 |
2.77, 3.68, 5.08 |
|
|
2 |
60.33 |
2.77, 3.91, 5.54 |
|
|
2 1/2 |
73.03 |
3.05, 5.16, 7.01 |
|
|
3 |
88.9 |
3.05, 5.49, 7.62 |
|
|
36 |
914.4 |
9.53, 12.7, 59.54 |
|
Specifications
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ASTM A312 347 stainless steel pipe is used in high-temperature environments such as heat exchangers, boiler tubes, and superheater tubes.
Ideal for chemical and petrochemical processing industries due to its resistance to intergranular corrosion.
ASTM A312 material is commonly applied in power generation and high-stress piping systems.
Suitable for environments requiring resistance to oxidation and creep at elevated temperatures.
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High-Temperature Resistance: Excellent performance in environments up to 870°C (1600°F).
Enhanced Corrosion Resistance: Stabilized with columbium (niobium) for superior resistance to intergranular corrosion.
Strength and Durability: Maintains mechanical strength and toughness under high stress and temperature conditions.
Weldability: Easily welded without risk of carbide precipitation.
Versatility: Suitable for both oxidizing and reducing environments.
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We provide prompt delivery services and adaptable shipping solutions to align with your project schedule. Our seamless pipes come in standard dimensions as well as tailored configurations, guaranteeing on-time delivery and the success of your project.
