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445 Stainless Steel｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）
About 22%Cr + molybdenum, stabilized high-Cr ferritic whose chloride pitting/crevice resistance approaches or beats 316L, nickel-free and cheaper — a corrosion-resistant spearhead among ferritics.
445不锈钢
FerriticAbout 22%Cr + molybdenum, stabilized high-Cr ferritic whose chloride pitting/crevice resistance approaches or beats 316L, nickel-free and cheaper — a corrosion-resistant spearhead among ferritics.
Standards
| GB (China) | ≈022Cr22Mo2TiNb（近似） |
|---|---|
| EN (Europe) | ≈1.4526系（近似） |
| ASTM/UNS (USA) | ≈S44500系（近似） |
| JIS (Japan) | SUS445J1 |
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 | ≤0.02 |
Si | ≤1.00 |
Mn | ≤1.00 |
Cr | 21.0–23.0 |
Mo | 1.5–2.5 |
Ti+Nb | 适量 |
Density：7.75 g/cm³
Performance
About 22%Cr + molybdenum, stabilized high-Cr ferritic whose chloride pitting/crevice resistance approaches or beats 316L, nickel-free and cheaper — a corrosion-resistant spearhead among ferritics.
Use cases
Coastal roofing/cladding, hot-water tanks, solar, fresh-water tanks, appearance and light water-bearing parts in mild acid/alkali.
Characteristics
High Cr-Mo gives excellent pitting resistance at better cost than 316L; ferritic has good conductivity and low expansion.
Pitfalls & cautions
Related grades
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