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2507 Stainless Steel｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）
A super duplex with higher Cr-Mo-N, giving the top chloride pitting, crevice and stress-corrosion resistance among conventional stainless, plus high strength for the harshest chloride environments.
2507不锈钢
DuplexA super duplex with higher Cr-Mo-N, giving the top chloride pitting, crevice and stress-corrosion resistance among conventional stainless, plus high strength for the harshest chloride environments.
Standards
| GB (China) | 022Cr25Ni7Mo4N（旧00Cr25Ni7Mo4N） |
|---|---|
| EN (Europe) | 1.4410 / X2CrNiMoN25-7-4 |
| ASTM/UNS (USA) | 2507 / UNS S32750 |
| JIS (Japan) | ≈SUS327J4L（近似） |
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 | ≤0.030 |
Si | ≤1.00 |
Mn | ≤1.00 |
Cr | 24.0–26.0 |
Ni | 6.0–8.0 |
Mo | 3.0–5.0 |
N | 0.24–0.32 |
Density：7.80 g/cm³
Performance
A super duplex with higher Cr-Mo-N, giving the top chloride pitting, crevice and stress-corrosion resistance among conventional stainless, plus high strength for the harshest chloride environments.
Use cases
Full-seawater immersion equipment, offshore platforms, deep-sea and high-chloride chemical media, high-strength corrosion-resistant pressure parts.
Characteristics
High PREN and strength allow thinning; but machining and welding are the most demanding.
Pitfalls & cautions
Related grades
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