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443 Stainless Steel｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）
About 21%Cr with copper/titanium stabilization, noticeably more corrosion resistant than 430 and approaching 304 in mild corrosion — an upgraded 430, but nickel-free and not resistant to chloride pitting.
443不锈钢
FerriticAbout 21%Cr with copper/titanium stabilization, noticeably more corrosion resistant than 430 and approaching 304 in mild corrosion — an upgraded 430, but nickel-free and not resistant to chloride pitting.
Standards
| GB (China) | ≈019Cr21CuTi（近似） |
|---|---|
| EN (Europe) | ≈1.4509 / 1.4521系（近似） |
| ASTM/UNS (USA) | ≈441系（近似） |
| JIS (Japan) | SUS443 |
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 | ≤0.05 |
Si | ≤1.00 |
Mn | ≤1.00 |
Cr | 19.0–21.0 |
Cu | 0.3–1.0（近似） |
Ti | 适量 |
Density：7.70 g/cm³
Performance
About 21%Cr with copper/titanium stabilization, noticeably more corrosion resistant than 430 and approaching 304 in mild corrosion — an upgraded 430, but nickel-free and not resistant to chloride pitting.
Use cases
Building roofing/cladding, appliances, elevators, fresh-water tanks and other decorative/light-load parts needing better resistance than 430.
Characteristics
High chromium gives better atmospheric and rust resistance at lower cost than 304; formability/weldability better than ordinary high-Cr ferritics.
Pitfalls & cautions
Related grades
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