Key Characteristics
Corrosion Resistance:
Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking due to 2-3% Mo content.
Performs well in acidic, saline, and high-humidity environments (e.g., marine, chemical plants).
High-Temperature Performance:
Serviceable up to 800°C continuously; short-term tolerance up to 925°C.
Formability & Weldability:
Ductile and easy to weld (use 316L for welding to minimize carbide precipitation).
Non-Magnetic:
Austenitic structure remains non-magnetic in annealed state (may become slightly magnetic after cold working).
Chemical Composition
| Element | Content Range | Role |
|---|---|---|
| Chromium (Cr) | 16.0–18.0% | Forms passive oxide layer for corrosion resistance. |
| Nickel (Ni) | 10.0–14.0% | Stabilizes austenitic structure, improves toughness. |
| Molybdenum (Mo) | 2.0–3.0% | Enhances chloride resistance. |
| Carbon (C) | ≤0.08% (≤0.03% for 316L) | Low carbon reduces weld decay. |
Mechanical & Physical Properties
Tensile Strength：515–690 MPa
Yield Strength：≥205 MPa
Elongation：≥40%
Density：8.0 g/cm³
Hardness (Brinell)：≤217 HB
Common Questions and Answers:
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