X2CrNiMo17-12-3
1.4432Low-carbon austenitic stainless steel with 2.5-3.0% Mo — the higher-Mo variant of 1.4404 (316L). The increased Mo (vs 2.0-2.5% in 1.4404) provides superior pitting and crevice corrosion resistance in chloride environments. Ultra-low carbon (≤0.03%) prevents sensitization during welding. Used for chemical processing equipment, pharmaceutical vessels, offshore piping, marine hardware, and pulp & paper digesters where 1.4404 is borderline. Often specified in pharmaceutical/biotech where maximum corrosion resistance is required.
Chemical composition comparison (wt%)
Side-by-side: X2CrNiMo17-12-3 (EN) (EN 10088-2) vs ASTM
| Element | X2CrNiMo17-12-3 (EN) | ASTM | Overlap |
|---|---|---|---|
| C | ≤ 0.03% | — | — |
| Si | ≤ 1% | — | — |
| Mn | ≤ 2% | — | — |
| P | ≤ 0.045% | — | — |
| S | ≤ 0.015% | — | — |
| Cr | 16.5–18.5% | — | — |
| Mo | 2.5–3% | — | — |
| Ni | 10.5–13% | — | — |
| N | ≤ 0.11% | — | — |
Mechanical properties
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 490–690 | MPa |
| Yield Strength | ≥ 200 | MPa |
| Elongation | ≥ 40 | % |
| Hardness HB | ≤ 215 | HB |
General
| Property | Value | Unit |
|---|---|---|
| Density | ≥ 7.95 | g/cm3 |
Related materials
304 Stainless Steel
1.4301The most widely used austenitic stainless steel. Excellent corrosion resistance, good formability and weldability. Standard choice for food processing, chemical, and architectural applications.
316L
1.4404Low-carbon austenitic stainless steel with molybdenum addition. Superior corrosion resistance to 304, especially against chlorides and pitting. Standard choice for chemical processing, marine, medical implants, and pharmaceutical equipment.
430 Stainless Steel
1.4016Ferritic chromium stainless steel with good corrosion resistance and formability. Lower cost than austenitic grades. Used for automotive trim, kitchen sinks, architectural panels, and appliance components.
Not sure which material fits?
🤖 Ask AI Advisor →All data is for reference only. Equivalents indicate similarity, not identity. Always verify against the applicable specification for safety-critical applications. materialref.com accepts no liability for decisions based on this data.