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429 Stainless Steel｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）
A low-chromium aluminium-stabilized ferritic focused on moderate-temperature oxidation and sulfidation resistance, cheaper than 430 with only average corrosion resistance; an older grade with limited use today.
429不锈钢
FerriticA low-chromium aluminium-stabilized ferritic focused on moderate-temperature oxidation and sulfidation resistance, cheaper than 430 with only average corrosion resistance; an older grade with limited use today.
Standards
| GB (China) | ≈0Cr15Al（近似） |
|---|---|
| EN (Europe) | ≈1.4002 / X6CrAl13（近似） |
| ASTM/UNS (USA) | 429 / UNS S42900 |
| JIS (Japan) | SUS429 |
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 | ≤0.12 |
Si | ≤1.00 |
Mn | ≤1.00 |
Cr | 14.0–16.0 |
Al | 0.10–0.30（近似） |
Density：7.70 g/cm³
Performance
A low-chromium aluminium-stabilized ferritic focused on moderate-temperature oxidation and sulfidation resistance, cheaper than 430 with only average corrosion resistance; an older grade with limited use today.
Use cases
Heat-exchanger shrouds, lightly heat-resistant liners, duties with low corrosion demand.
Characteristics
Aluminium improves oxidation and sulfur resistance; ferrite is nickel-free, cheap and more conductive than austenite.
Pitfalls & cautions
Related grades
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