444 / X2CrMoTi18-2
1.4521Stabilized ferritic stainless steel with Mo addition. A cost-effective alternative to 316L for applications where austenitic properties are not needed. Excellent resistance to chloride stress corrosion cracking. Used for hot water tanks, solar collectors, automotive exhaust, and catering equipment.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 444 | S44400 | REF |
| 🇪🇺 | EN | Europe | X2CrMoTi18-2 | 1.4521 | 100% |
| 🇯🇵 | JIS | Japan | SUS444 | — | 95% |
Sources: ASTM A240, EN 10088-2, JIS G4305
Chemical composition comparison (wt%)
Side-by-side: 444 / X2CrMoTi18-2 (EN) (EN 10088-2) vs SUS444 (JIS)
| Element | 444 / X2CrMoTi18-2 (EN) | SUS444 (JIS) | Overlap |
|---|---|---|---|
| C | 0–0.025% | — | — |
| Si | 0–1% | — | — |
| Mn | 0–1% | — | — |
| P | 0–0.04% | — | — |
| S | 0–0.015% | — | — |
| Cr | 17–20% | — | — |
| Mo | 1.8–2.5% | — | — |
| Ti | 0–0.8% | — | — |
Mechanical properties
Annealed
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | 400–600 | MPa |
| Yield Strength | ≥ 250 | MPa |
| Elongation | ≥ 20 | % |
| Elastic Modulus | ≥ 220 | GPa |
| Density | ≥ 7.75 | g/cm3 |
Compatibility verdict
444 / X2CrMoTi18-2 and SUS444: 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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