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How to process 430 SS plate?

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430 stainless steel plate can be used for building decoration, fuel burner parts and household appliances parts. What properties does 430 stainless steel plate have? How to process stainless steel plate?


l What is 430 stainless steel plate?

l What properties does 430 stainless steel plate have?

l What should be paid attention to during the processing of 430 SS plate?


What is 430 stainless steel plate?

1. 430 SS plate is a ferritic, pure chromium, non-hardening grade with excellent corrosion resistance and formability as well as useful mechanical properties. Its resistance to nitric acid makes it useful for specific chemical applications, but automotive decoration and electrical components represent its biggest areas of application.

2. The 430 SS plate is a free machined version of this class and is available in bar form for automatic screwers. Class 434 is a class 430 molybdenum bearing version with the same useful performance combination. Its molybdenum addition improves corrosion resistance.

3. These characteristics of 430 SS plate are specified in ASTM A240/A240M for flat rolled materials (plates, sheets and coils). Other products such as forgings and bars specify similar but not necessarily identical characteristics in their respective specifications. ASTM A582 specifies a 430F class performance for bars.


What properties does 430 stainless steel plate have?

1. Class 430 is resistant to a wide range of corrosive environments, including nitric acid and some organic acids. It achieves maximum corrosion resistance under highly polished or polished conditions. Generally speaking, its pitting and crevice corrosion resistance is close to class 304. Class 430 has very high stress corrosion cracking resistance, as with all ferritic stainless steels. Pitting and slot corrosion resistance of the 430F is significantly reduced compared to other high sulfur free cutting grades compared to its non-free cutting counterparts.

2. The 430 SS plate re-sizes oxidation at up to 870°C for intermittent use and 815°C for continuous use. This brand may become brittle at room temperature after prolonged heating in the 400-600°C range. This effect can be eliminated by annealing.


What should be paid attention to during the processing of 430 SS plate?

1. Solution annealing -- heating to 815-845°C, ½ h per 25mm thickness, slow furnace cooling to 600°C, then rapid air cooling. Slow cooling from 540-400°C results in embrittlement.

2. Sub-critical annealing - heated to 760-815°C followed by air cooling or water quenching.

3. This grade cannot be hardened by heat treatment.

4. If welding is required, preheat at 150-200°C.

5. Embrittlement of the weld metal and heat affected zone can be alleviated by post weld annealing at 790-815°C

6. Grain refinement will not occur.

7. Easier to process than standard austenite grades (e.g. 304).

8. Tools still tend to wear and tear.

9. Lightly drawn bars are easier to process than annealed bars.

10. Grade 430F is a free-finishing version of 430, which is easier to process.

11. The lower rate of work hardening makes bending and forming easier than grade 304.

12. The low malleability limits very demanding operations.

13. Severe bending should make the bending axis at right angles to the rolling direction.

14. Severe cold upsetting of 430 wire is possible.


430 SS plates are more economical than other grades, thus expanding their use in a variety of applications. In addition, provides excellent corrosion resistance in mild corrosive environments.If you are looking for a supplier of high quality stainless steel plate at a reasonable price , the Shandong Hongqi Material Co., Ltd. is a very good choice.

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