high speed tool steel

Product Description

1.Chemical composition

 C:1.*0 ~ 1.*0 (promised error: ± 0.*1)

Si:0.*0 ~ 0.*5 (promised error: ± 0.*5)

 Mn:0.*5 ~ 0.*0 to bias: 0.*4 S ≤ 0.**0 P ≤ 0.**0   
(Cr:3.*5 ~ 4.*0 to bias: ± 0.*5)

Ni: promise residual content ≤ 0.*0

 Cu: promise residual content ≤ 0.*5

 V:2.*5 ~ 2.*5 (promised error: ± 0.*5)

Mo:4.*5 ~ 6.*0 (promise: size deviation ≤ 6, ± 0.*5; > 6, + 0.*0)

 W:5.*0 ~ 6.*5 (promise: size deviation ≤ *0, ± 0.*0; > *0, + 0.*0)
2.Delivery status

Hot rolling, forging, cold drawn steel bars in annealing state delivery, rolled, forged steel bar with annealing + other processing methods (skin, gently pull, grinding or polishing processing before delivery)

3.use characteristics

(1) hardness

At **0 ℃ temperature, still can maintain high hardness.Red hardness on the thermal deformation of die and the high speed cutting tool steel is very important for performance.

(2) wear resistance

Good resistance to wear, or abrasion resisting ability.Tool under considerable pressure and friction conditions, can still keep its shape and size.

(3) the strength and toughness

Cobalt high speed tool steel is added with a certain amount of high speed tool steel on the CO, can significantly improve the hardness, wear resistance and toughness.