302
1.4319Higher-carbon variant of 304 (C max 0.15% vs 0.08%). The original "18-8" stainless steel. Higher C gives better strength after cold work but makes it susceptible to intergranular corrosion after welding. Largely superseded by 304/304L but still specified for springs and high-strength cold-worked applications. Used for springs, screen cloth, architectural trim, and wire forms.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 302 / UNS S30200 | S30200 | REF |
| 🇪🇺 | EN | Europe | X12CrNi18-9 (1.4319) | 1.4319 | 100% |
Sources: ASTM A313, EN 10088-2
Chemical composition comparison (wt%)
Side-by-side: 302 (EN) (EN 10088-2) vs X12CrNi18-9 (1.4319) (EN) (EN 10088-2)
| Element | 302 (EN) | X12CrNi18-9 (1.4319) (EN) | Overlap |
|---|---|---|---|
| C | 0–0.15% | 0–0.15% | 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 | 17–19% | 17–19% | OK |
| Ni | 8–10% | 8–10% | OK |
Mechanical properties
Solution annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 520–750 | MPa |
| Yield Strength | ≥ 205 | MPa |
| Elongation | ≥ 40 | % |
| Elastic Modulus | ≥ 200 | GPa |
| Density | ≥ 7.9 | g/cm3 |
Compatibility verdict
302 and X12CrNi18-9 (1.4319): 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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