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What material is stainless steel pipe

Release time:

2025-04-02

It mainly includes ferrite and martensite stainless steel, such as 430 (for decoration) and 440 (high-strength cutting steel). This type of material has high hardness but weak corrosion resistance, and is often used in automotive accessories, tools and other scenarios.

‌Stainless steel pipes are alloy steels based on chromium (Cr) and added with nickel (Ni), manganese (Mn), and their core characteristics are corrosion resistance and oxidation resistance. According to the differences in composition, it can be divided into the following main series:

‌200 Series

The combination of chromium-nickel-manganese (Cr-Ni-Mn) is mainly used, and the representative model is such as 201 stainless steel pipe. This type of material is relatively low in cost, but its corrosion resistance is weaker than that of the 300 series, and is often used in decorative tubes and low-demand product tubes.

‌300 Series

Typically, the chromium-nickel (Cr-Ni) combination includes widely used 304 stainless steel pipes and 316 stainless steel pipes with stronger corrosion resistance. This type of material has excellent comprehensive performance and is suitable for fluid transport and structural components in the fields of food, medical care, chemical engineering, etc.

‌400 Series

‌600 Series

It is a precipitated hardened stainless steel pipe, which increases strength through special heat treatment and is mainly used for high-precision mechanical parts.

Different materials further optimize their performance by adding titanium (Ti) and sulfur (S), such as 321 stainless steel to reduce the risk of weld corrosion, while 416 stainless steel to improve processing performance through sulfur. In actual applications, the corresponding materials need to be selected according to the scenario requirements (such as corrosion environment and strength requirements). For example, the food industry prefers to use the 304 or 316 series.

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