Will 430 Stainless Steel Rust? Compared with 201 Grade Stainless Steel, Which One Is Better?

1. Will 430 stainless steel rust?

Under normal circumstances, 430 stainless steel will not rust. 430 stainless steel has the ability to resist atmospheric oxidation, that is, rust. At the same time, it also has the ability to resist corrosion in the medium containing acid, alkali and salt, that is, corrosion resistance. However, the size of its anti-corrosion ability is changed with the chemical composition of its steel itself, processing state, use conditions and the type of environmental media.

If there is rust, you need to consider whether there is a problem with the stainless steel you bought, and whether the storage place is in humid air. Buy an anti-rust paste in the stainless steel market, and apply it to the 430 material to basically extend the anti-rust time. 430 stainless steel is a general-purpose steel with good corrosion resistance. Its thermal conductivity is better than that of austenite, its thermal expansion coefficient is smaller than that of austenite, it is resistant to fatigue, and it adds stabilizing element titanium, and has good mechanical properties at the weld. 430 stainless steel is used for architectural decoration, fuel burner parts, household appliances, and home appliance parts.

2. Use of 430 stainless steel

430 stainless steel, as a representative steel grade of ferritic steel, has low thermal expansion and excellent formability and oxidation resistance. It is used for building decoration, fuel burner parts, household appliances, and home appliance parts. It is used in hot water tanks, hot water supply systems, sanitary appliances, durable household appliances, bicycle flywheels, etc. It is also used in heat-resistant appliances, burners, household appliances category 2 tableware, kitchen sinks, exterior trim materials, bolts, nuts, CD rods, screens, etc.

3. Which is better between 430 stainless steel and 201 grade stainless steel?

430 stainless steel with smooth surface. It is resistant to thermal fatigue, acid, alkaline gases, solutions and corrosion of other media. It has high plasticity, toughness and mechanical strength. 201 grade stainless steel pipe has the characteristics of acid resistance, alkali resistance, high density and no pinholes. It is a high-quality material for the production of various watch cases, strap bottom covers, etc. The focus of 201 stainless steel pipe can be used to make decorative pipes, industrial pipes, and some shallow stretched products. The higher-end variety sus 201 will be used for products that require deep drawing and salt spray testing.

430 stainless steel is a martensitic stainless steel. Martensitic stainless steel has the same characteristics of hardening through quenching as ordinary alloy steel. In martensitic stainless steels quenched-tempered, increasing the chromium content increases the ferrite content, which reduces hardness and tensile strength. In the annealed condition of low carbon martensitic chromium stainless steel, the hardness increases as the chromium content increases, while the elongation decreases slightly. Under the condition of a certain chromium content, the increase of carbon content increases the hardness of the steel after quenching, while the plasticity decreases. 201 grade stainless steel is a chromium-nickel austenitic stainless steel. Austenitic stainless steels are non-magnetic and have high toughness and plasticity, but lower strength. It is impossible to strengthen it by phase transformation, it can only be strengthened by cold working.