X2CrNiMoN17-13-3
1.4429Low-carbon nitrogen-enhanced austenitic Cr-Ni-Mo steel — AISI 316LN. Nitrogen (0.12-0.22%) boosts yield strength above 316L while maintaining weldability. Higher PREN than 316L for better pitting resistance. Charpy impact compliant to -196°C. ASME Section III approved for nuclear pressure boundary. Used for nuclear power piping, LNG cryogenic vessels, pharmaceutical equipment, and chemical plants.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 316LN / UNS S31653 | S31653 | REF |
| 🇪🇺 | EN | Europe | X2CrNiMoN17-13-3 / 1.4429 | 1.4429 | 100% |
Sources: ASTM A240, EN 10088-3
Chemical composition comparison (wt%)
Side-by-side: X2CrNiMoN17-13-3 (EN) (EN 10088-3) vs X2CrNiMoN17-13-3 / 1.4429 (EN) (EN 10088-3)
| Element | X2CrNiMoN17-13-3 (EN) | X2CrNiMoN17-13-3 / 1.4429 (EN) | Overlap |
|---|---|---|---|
| C | 0–0.03% | 0–0.03% | OK |
| Si | 0–1% | 0–1% | OK |
| Mn | 0–2% | 0–2% | OK |
| P | 0–0.045% | 0–0.045% | OK |
| S | 0–0.015% | 0–0.015% | OK |
| Cr | 16.5–18.5% | 16.5–18.5% | OK |
| Mo | 2.5–3% | 2.5–3% | OK |
| Ni | 11–14% | 11–14% | OK |
| N | 0.12–0.22% | 0.12–0.22% | OK |
Mechanical properties
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 550–700 | MPa |
| Yield Strength | ≥ 270 | MPa |
| Elongation | ≥ 40 | % |
| Hardness HB | ≤ 215 | HB |
| Elastic Modulus | ≥ 200 | GPa |
| Density | ≥ 8 | g/cm3 |
Compatibility verdict
X2CrNiMoN17-13-3 and X2CrNiMoN17-13-3 / 1.4429: 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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