80 pieces M4*8 mm 304 Stainless Steel Inner Hex socket Countersunk Flat Cap Cup Head Screws Bolt DIN7991 Standard | Обустройство дома

Work hardening rate is moderate, suitable for general cold processing and stretching, cold processing performance is better, generally used for hexagonal screws, nuts and gasket products

Plus molybdenum, corrosion resistance than 304 strong, especially for seawater and chemical media, more corrosion resistance and pitting resistance.

Note:

1) If the nickel content is less than 8%, the minimum content of manganese must be 5%
2) When the nickel content is more than 8%, the minimum content of copper is not limited
3) If the chromium content is less than 17%, then the minimum nickel content of 12%
4) For the maximum 0.03% carbon content of austenitic stainless steel, nitrogen content of up to 0.22
5) For larger diameter products, in order to achieve the specified mechanical properties in the manufacturer\'s instructions, may have a higher carbon content, but martensitic steel should not exceed 0.12%

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