X2CrNiMoN17-13-3
1.4429Nitrogen-strengthened low-carbon austenitic stainless steel — essentially 316LN. The N addition (0.12–0.22%) raises yield strength to ≥280 MPa (vs 200 for 316L) without sacrificing corrosion resistance or weldability. Preferred over 316L for pressure vessels and cryogenic applications where higher design stress is needed. Approved for ASME Section VIII. Used for chemical reactors, pharmaceutical vessels, cryogenic storage (LNG) and high-pressure piping.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | 316LN | S31653 | REF |
| 🇯🇵 | JIS | Japan | SUS316LN | — | 95% |
Sources: ASTM A240, JIS G4304
Chemical composition comparison (wt%)
Side-by-side: X2CrNiMoN17-13-3 (EN) (EN 10088-3) vs SUS316LN (JIS)
| Element | X2CrNiMoN17-13-3 (EN) | SUS316LN (JIS) | Overlap |
|---|---|---|---|
| C | ≤ 0.03% | — | — |
| Si | ≤ 1% | — | — |
| Mn | ≤ 2% | — | — |
| Cr | 16.5–18.5% | — | — |
| Mo | 2.5–3% | — | — |
| Ni | 11–14% | — | — |
| N | 0.12–0.22% | — | — |
Mechanical properties
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 550–750 | MPa |
| Yield Strength Rp0.2 | ≥ 280 | MPa |
| Elongation A | ≥ 35 | % |
| Hardness HB | ≤ 220 | HB |
General
| Property | Value | Unit |
|---|---|---|
| Density | 8 | g/cm³ |
Compatibility verdict
X2CrNiMoN17-13-3 and SUS316LN: 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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