A4-70 M24 M27 Stainless Steel Hex Metal Bolts and Washers High-Performance Rust-Resistant Fastening Solution

A4-70 M24 M27 Stainless Steel Hex Metal Bolts and Washers High-Performance Rust-Resistant Fastening Solution

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Applications

Stainless steels can be divided into three main groups based on their microstructure:

Austenitic Stainless Steels: This family of alloys is often referred to as the 300 series of stainless steels. Typical grades include 304 and 316 stainless steels, with 316 being the most corrosion resistant. The elemental composition includes about 18 per cent chromium and 8 per cent nickel. In addition to this, small amounts of nitrogen and manganese are included. Austenitic stainless steels are the most common corrosion resistant metals on the market.

Martensitic Stainless Steel: This family of alloys is often referred to as the 400 series of stainless steel, with a common grade of 420 A. This steel alloy also has 18 per cent chromium and no nickel, but has a higher carbon content and is harder than the other corrosion-resistant metals in the stainless steel family. However, this alloy is not as corrosion resistant as 300 series steel.

Ferritic Stainless Steel: This alloy is also part of the 400 series of stainless steels. The most common grade is 430 A. However, ferritic stainless steels have a much higher chromium content, up to 27% (to improve elasticity), but a lower carbon content (to make them more ductile).

Duplex Stainless Steel

Duplex steel is a steel alloy that contains two different phases, hence the name. The common phases are ferrite and austenite. Duplex steels derive optimum properties from both phases and combine them into an advanced corrosion-resistant metal for the most challenging applications. Typical grades include 2205 (containing 22 per cent chromium, 5 per cent nickel and 3 per cent molybdenum) and S32750 (containing 25 per cent chromium, 7 per cent nickel and 4 per cent molybdenum).

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Hunan Jiashan Hardware Tech as a branch company of J AND R METALWORK,established in 2007 and located in Changsha, Hunan, China.After almost 17 years management development and technical improvement, Jiashan is willing to be a leading supplier in hardware industry. Meanwhile, we are one of member of Hardware industrial Association and Green energy industry Association.

Jiashan is specialized in milling,turning,lathe 5 axis cnc machining parts,injection molding parts,alumium extrusion parts,laser cutting parts,sheet metal fabrication parts,wire edm parts,vacuum casting parts and fasteners.Those parts are widely service for electric vehicle,solar system,wind power system and construction machinery industry.

During17 years domestic and abroad market investigation, Jiashan's products are sold to many countries and regions including the North America, Europe, Australia, the Middle East and Asia. With owned the advanced cnc machinee, milling machine, polishing machine, stamping machine etc. Jiashan is able to degsin and produce varies OEM parts with drawings or samples provided. Further more, Jiashan also can help to provide a whole solution for modularity R&D of electric vehicle and solar system .

By constantly strengthening our management and consummate the quality guarantee system.In 2023, Jiashan acquired ISO9001:2008 quality certification. Currently,the 5S management mode is implemented in the whole Jiashan system.

Best quality and best service is and will be always our toppest concern.