HIGH SPEED STEEL Performance FOR HSS-W18

HSS CODE: W18Cr4V (W18)

Chemical compositons(%):   C                   Si                   Mn               W                  Mo             Cr                 V                  Co                                                                             0.70-0.80       0.15-0.65      0.10-0.40      17.50-19.00     <0.3     3.80-4.40        1.00-1.40    

International Code:     

ASTM: T1

UNS: T12001   

JIS:SKH2

DIN: 

BS:  BT1 

NF: HS18-0-1

ROCT:  P18

ISO:   HS18-0-1

China：W18     

Density Annealed(g/cm):8.7

Heat treatment:Starting: 1100 Finishing:900     

Usage:For making cutters of High speed Tool Bits,Drill Bits,Endmills,Reamers etc.And Taps,Dies,Rolling dies,Saw bladed etc.

Anneal temperature （℃) 840-860    

Stress relief Temperature（℃）:600-650    

Quench temperature （℃）:1270-1285     

Coolant media of quench : salt bath  at 600℃,or Oil  cool or air cool    

Normal temperature of temper（℃）: 550-570     

Quench and temper HRC: 63-66

Bending Strength(Mpa):   

 Impact Toughness(MJ/㎡): 

HRC at 600℃(HRC):   

Character:representative Steel Grade of W -Mo series,with High Hardness,High Hardness in high temperature.High Red Hardness.The wide range of Heat treatment temperature.Not easy over heating when Quenching. good grindability,not easy to oxidize and decarburized.But hot forming inferior than Mo-series of HSS.