X2CrNiMo17-12-2
1.4404Low-carbon molybdenum-bearing austenitic stainless steel, widely known as AISI 316L. The Mo addition (2–2.5%) significantly improves resistance to pitting and crevice corrosion compared to 1.4301 (304). Low carbon content (max 0.03%) ensures resistance to intergranular corrosion after welding without post-weld heat treatment. Standard grade for pharmaceutical, petrochemical, chemical and marine applications. PREN 23–29.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | 316L | S31603 | REF |
| 🇯🇵 | JIS | Japan | SUS316L | — | 95% |
| 🇬🇧 | BS | United Kingdom | 316S11 | — | 95% |
Sources: ASTM A240, JIS G4303, BS 970
Chemical composition comparison (wt%)
Side-by-side: X2CrNiMo17-12-2 (EN) (EN 10088-3) vs SUS316L (JIS)
| Element | X2CrNiMo17-12-2 (EN) | SUS316L (JIS) | Overlap |
|---|---|---|---|
| C | ≤ 0.03% | — | — |
| Si | ≤ 1% | — | — |
| Mn | ≤ 2% | — | — |
| P | ≤ 0.045% | — | — |
| S | ≤ 0.015% | — | — |
| Cr | 16.5–18.5% | — | — |
| Mo | 2–2.5% | — | — |
| Ni | 10–13% | — | — |
| N | ≤ 0.11% | — | — |
Mechanical properties
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 500–700 | MPa |
| Yield Strength Rp0.2 | ≥ 200 | MPa |
| Elongation A | ≥ 40 | % |
| Hardness HB | ≤ 215 | HB |
| Impact Energy KV | ≥ 100 | J |
General
| Property | Value | Unit |
|---|---|---|
| Density | 8 | g/cm³ |
Compatibility verdict
X2CrNiMo17-12-2 and SUS316L: 95% 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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