316ln 57×3.5 Seamless Pipe
SSM supplies 316LN seamless pipes (57 × 3.5 mm, ASTM A312 / ASME SA312), offering excellent corrosion resistance, high strength, and superior weldability for chemical, marine, and industrial applications.
Material Overview:
Material Grade: 316LN
Type: Austenitic Stainless Steel
Form: Seamless Pipe / Tube
Outer Diameter (OD): 57 mm
Wall Thickness (WT): 3.5 mm
Standards: ASTM A312 / ASME SA312
Chemical Composition (Typical)
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.03 |
| Chromium (Cr) | 16.0–18.0 |
| Nickel (Ni) | 10.0–14.0 |
| Molybdenum (Mo) | 2.0–3.0 |
| Manganese (Mn) | ≤ 2.0 |
| Silicon (Si) | ≤ 1.0 |
| Nitrogen (N) | 0.10 max |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.03 |
Mechanical Properties (Typical)
| Property | Value |
|---|---|
| Tensile Strength | 520–750 MPa |
| Yield Strength | 310–430 MPa |
| Elongation | ≥ 40% |
| Hardness | HB ≤ 187 |
Key Features:
Enhanced corrosion resistance, particularly against chloride-induced stress corrosion
Low carbon content reduces risk of intergranular corrosion after welding
Nitrogen-strengthened for higher yield strength than 316L
Excellent ductility, toughness, and weldability
Suitable for high-pressure and high-temperature environments
Typical Applications:
Chemical and petrochemical pipelines
Pressure vessels and heat exchangers
Marine and offshore applications
Food, pharmaceutical, and medical equipment
High-temperature process systems
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