X2CrNiMo18-14-3
1.4435Higher-alloy variant of 316L — Ni 12.5-15.0% (vs 10.0-13.0 for 1.4404) and Mo 2.5-3.0%. Guaranteed delta-ferrite free (essential for pharmaceutical/biotech electropolished surfaces). THE pharma and biotech process equipment stainless. Also used for chemical plant and food processing where maximum pitting resistance in the 316-family is needed.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 316L (high-Ni variant) | S31603 | REF |
| 🇪🇺 | EN | Europe | X2CrNiMo18-14-3 / 1.4435 | 1.4435 | 100% |
Sources: ASTM A240, EN 10088-3
Chemical composition comparison (wt%)
Side-by-side: X2CrNiMo18-14-3 (EN) (EN 10088-3) vs X2CrNiMo18-14-3 / 1.4435 (EN) (EN 10088-3)
| Element | X2CrNiMo18-14-3 (EN) | X2CrNiMo18-14-3 / 1.4435 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.03% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| Cr | 17–19% | 17–19% | OK |
| Mo | 2.5–3% | 2.5–3% | OK |
| Ni | 12.5–15% | 12.5–15% | OK |
Mechanical properties
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 490–690 | MPa |
| Yield Strength | ≥ 190 | MPa |
| Elongation | ≥ 40 | % |
| Elastic Modulus | ≥ 200 | GPa |
| Density | ≥ 8 | g/cm3 |
Compatibility verdict
X2CrNiMo18-14-3 and X2CrNiMo18-14-3 / 1.4435: 100% composition match
Close equivalents but NOT identical.
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.
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