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304L Stainless Steel｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）
The low-carbon version of 304 (C≤0.030%); after welding it avoids chromium-carbide precipitation at grain boundaries, giving better intergranular corrosion resistance, with general corrosion similar to 304.
304L不锈钢
AusteniticThe low-carbon version of 304 (C≤0.030%); after welding it avoids chromium-carbide precipitation at grain boundaries, giving better intergranular corrosion resistance, with general corrosion similar to 304.
Standards
| GB (China) | 022Cr19Ni10（旧00Cr19Ni10） |
|---|---|
| EN (Europe) | 1.4307 / X2CrNi18-9 |
| ASTM/UNS (USA) | 304L / UNS S30403 |
| JIS (Japan) | SUS304L |
Chemical composition (wt%)
| Chemical composition (wt%) | % |
|---|---|
C | ≤0.030 |
Si | ≤1.00 |
Mn | ≤2.00 |
Cr | 18.0–20.0 |
Ni | 8.0–12.0 |
P | ≤0.045 |
S | ≤0.030 |
Density：7.93 g/cm³
Performance
The low-carbon version of 304 (C≤0.030%); after welding it avoids chromium-carbide precipitation at grain boundaries, giving better intergranular corrosion resistance, with general corrosion similar to 304.
Use cases
Welded structures, pressure vessels, piping, food and pharma equipment; prefer the L grade for thick-plate welding or when post-weld solution treatment is impossible.
Characteristics
Good weldability that keeps corrosion resistance without post-weld heat treatment; slightly lower strength than 304 due to lower carbon.
Pitfalls & cautions
Related grades
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