SKH-9 High speed steel

High-speed steel SKH-9 is hot-worked, cold-workable, and has good machinability and abrasiveness.
Steelun Introduction of SKH-9 High speed steel:
AISI: M2 delivery hardness 260HB (MAX) hardness 60-64HRC
1W-MO series (6-5-2 type) high speed tool steel is the most common, especially SKH-9 (SKH51) is used in the world, instead of W type high speed tool steel SKH2.
High speed steel SKH-9 quality map
2 Carbide structure is fine, tidy, well distributed, and evenly organized. Therefore, the wear resistance and toughness are relatively balanced. Especially because it is only an increase or decrease in the carbon content, the properties of the steel can be continuously and largely changed without damaging the high temperature characteristics. Low carbon steel is suitable for toughness, and high carbon steel bell is suitable for hardness and wear resistance.
3 Rich in hot work, cold workability, good machinability and abrasiveness.
High speed steel SKH-9 heat treatment good spot hardness:
62-64HRC
High speed steel SKH-9 factory state:
Annealing to HB255
Steelun Chemical composition of SKH-9 High speed steel:
Carbon (C) Silicon (Si) Manganese (Mn) Molybdenum (Mo) Vanadium (V) Chromium (Cr) Sulfur (S) Tungsten (W) Phosphorus (P)
0.8-0.9≤0.45 ≤0.455.02.04.00.016.0 0.03
High Speed ​​Steel SKH-9 Use:
Widely used in all kinds of cutting tools and wear-resistant cold work dies
For cutting: drills, taps, reamers, circular saws, gear cutters, broaches, planers, etc.
Mold: various hot work, cold die and punch, cutter, slitting knife, various rolling tools.
High Speed ​​Steel SKH-9 Forging:
1.100~900°C
High speed steel SKH-9 annealing:
Heat to 800-850 ° C, stay at this temperature for two to four hours, let it gradually cool in the furnace.
High speed steel SKH-9 quenching:
According to the engineer of Steelun , the high speed steel SKH-9 quenching is preheated to 550-600 ° C, heated to 950 ° C, and then heated to a: 1,220 ~ 1250 ° C; b: 1,200 °C ~ 1230 ° C. Hardened in oil, but the oil temperature must first moisturize 40-60 ° C (a. general tools; b. complex forms of tools requiring toughness)
High speed steel SKH-9 tempering:
Heat to 550-570 ° C, stay at this temperature, then cool in still air, tempering must be repeated twice
High speed steel SKH-9 spot specification:
All common specifications from 3mm to 75mm thick
High-speed steel SKH-9 theoretical weight calculation formula:
Length * width * height * 0.00008082

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