How to identify 316L passed off as 904L?｜Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司）

Conclusion：Check Mo/Cu/Ni: 904L Mo≈4.5, Cu≈1.5, high Ni — PMI spots it instantly, price differs several-fold.

This conclusion is compiled from our technical article: 904L采购最容易踩的五个坑，以及怎么验 (904L识别经验). Verify against your actual duty; call us to discuss.

Selection notes

Check Mo/Cu/Ni: 904L Mo≈4.5, Cu≈1.5, high Ni — PMI spots it instantly, price differs several-fold.

Industry & scenario

Procurement, inspection & certification

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This article is written by @Stainless Insights. @Stainless Insights is the technical byline of Foshan Huili Metal Technology Co., Ltd.（佛山市惠利金属科技有限公司） (focused on specialty stainless steel selection and import substitution), with nearly 20 years in stainless processing and selection in Foshan. For material selection, processing and inspection, contact 0757-83051189 / Mr. He 13703060845.

Spell out the working conditions — we handle the rest

Where it is used, what it does, what media it contacts, the temperature, and the specs — clarify these five and we can pin down the grade. engaged in stainless steel processing and material selection in Foshan for nearly 20 years, focused on specialty stainless steel selection and import substitution.