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441 Stainless Steel｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）
A Ti+Nb dual-stabilized 18%Cr ferritic with better high-temperature oxidation, thermal-fatigue and post-weld resistance than 430/439 — an upgraded heat-resistant ferritic grade.
441不锈钢
FerriticA Ti+Nb dual-stabilized 18%Cr ferritic with better high-temperature oxidation, thermal-fatigue and post-weld resistance than 430/439 — an upgraded heat-resistant ferritic grade.
Standards
| GB (China) | ≈022Cr18NbTi（近似） |
|---|---|
| EN (Europe) | 1.4509 / X2CrTiNb18 |
| ASTM/UNS (USA) | 441 / UNS S43940 |
| JIS (Japan) | SUS441 |
For a few high-chromium ferritic and specialty hardened grades the EN/JIS equivalents differ between mills; marked with ≈ — rely on the mill certificate composition when ordering.
Chemical composition (wt%)
| Chemical composition (wt%) | % |
|---|---|
C | ≤0.03 |
Si | ≤1.00 |
Mn | ≤1.00 |
Cr | 17.5–18.5 |
Ti | 0.10–0.50 |
Nb | 0.30–0.60 |
Density：7.70 g/cm³
Performance
A Ti+Nb dual-stabilized 18%Cr ferritic with better high-temperature oxidation, thermal-fatigue and post-weld resistance than 430/439 — an upgraded heat-resistant ferritic grade.
Use cases
Auto exhaust manifolds, heat exchangers, water heaters, welded parts needing thermal fatigue resistance.
Characteristics
Dual stabilization suppresses post-weld sensitization and intergranular attack, with good high-temperature strength and stability.
Pitfalls & cautions
Related grades
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