Biography for 8MnSi 8MnSi 8MnSi quality structural steel cold die steel chemical composition quality assurance

Alloy tool steel: 8MnSi Standard: GB / T 1299-1985; corresponding Japanese steel plate: SKS 95 Executive Standard: JIS G4404-2006 Features and Scope 8MnSi measuring and cutting steel, the steel on the basis of improved T8 steel quenching permeability. 8MnSi alloy tool steel is mainly used as a chisel woodworking tools, saw blades and other tools, but also for saws, knives body panels and so on. 8MnSi steel is an alloy of steel and cold work die steel cutting tools. The steel in line with the country's resources, due to the lower price does not contain chromium and its hardenability, toughness and wear resistance are better than carbon tool steel. Improve silicon, manganese content from the T8 on the basis of carbon tool steel. Due to the increased silicon, manganese, thereby increasing the steel hardenability. [1] 2 supplier status Rolled varieties available, forgings, cold-drawn material. Annealed, hardness ≤229HBW, press the diameter ≥4.0mm 3 Chemical composition of carbon C: 0.75 ~ 0.85 Si Si: 0.30 ~ 0.60 Mn Mn: 0.80 ~ 1.10 Sulfur S: ≤0.030 phosphorus P: ≤0.030 Ni: to allow the residual content ≤0.25 copper Cu: to allow the residual content of ≤0.30 4 mechanical properties of hardness: annealing, ≤229HB, indentation diameter ≥4.0mm; quenching, ≥60HRC 5 heat treatment and microstructure Heat Treatment Specification: Sample quenching 800 ~ 820 ℃, oil cold. 6 steel specification steel grades of steel round 8mnsi ∮45 8mnsi ∮50 8mnsi steel steel steel ∮55 8mnsi ∮60 8mnsi ∮65 8mnsi steel steel steel ∮70 8mnsi ∮75 8mnsi ∮80 8mnsi steel steel steel ∮85 8mnsi ∮90 8mnsi steel ∮ 957 refer to the corresponding grades of Chinese GB Standard Grade 8MnSi, German DIN standard grades C75W, German DIN standard material number 1.1750, the British standard BS grades BW1A. 8 quenching quenching temperature specification 800 ~ 820 ° C, oil cooling, hardness ≥60HRC. 9 Typical Application Examples 1) applies to bolts, spikes die and wire drawing dies. 2) for the production of wooden tools, such as chisels, saw blades and other tools, but also for a disc saw blades, body panels, etc. 3) used as a small forging die and punch, hot forging die. 4) widely used in the production of low-speed cutting and cutting tools, such as dies, taps and so on.