High-speed steel has good process performance, good strength and toughness, so it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 1960s, which has the advantage of avoiding the reduction of mechanical properties and heat treatment deformation caused by the segregation of carbides produced by the smelting method.
M35 steel is a kind of steel in GB/T 9943-1988.
chemical composition
Carbon C: 0.80 to 0.90 (allowable deviation: ±0.01)
Silicon Si: 0.20 to 0.45 (allowable deviation: ±0.05)
Manganese Mn: 0.15 to 0.40 (allowable deviation: +0.04)
Sulfur S: ≤0.030
Phosphorus P: ≤0.030
Chromium Cr: 3.75~4.50 (allowable deviation: ±0.05)
Nickel Ni: Allowable residual content ≤ 0.30
Copper Cu: allowable residual content ≤ 0.25
Vanadium V: 1.75~2.25 (allowable deviation: ±0.05)
Molybdenum Mo: 4.50~5.50 (allowable deviation: size≤6,±0.05; size>6,±0.10)
Tungsten W: 5.50~6.50 (allowable deviation: size≤10,±0.10; size>10,±0.20)
Cobalt Co: 4.50 to 5.50 (allowable deviation: ±0.15)
Main features
The main uses are hob, broach, end mill.
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