HIGH SPEED STEEL Performance FOR HSS-W4

HSS CODE: W4Mo3Cr4VSi (W4)

Chemical compositons(%):   

C                       Si                   Mn               W                  Mo             Cr                 V                                                                                               0.88-0.98       0.20-0.40      0.20-0.40      3.50-4.5        2.5-3.5     3.80-4.40        1.20-1.80     

 International Code:      

ASTM:  

UNS:     

JIS: 

DIN:  

BS:   

NF:  

ROCT:   

ISO:    

China：W4      

Density Annealed(g/cm):7.95

Heat treatment:Starting: 1100 Finishing:900      

Usage: Mainly for Twist Drill bits,Jig Saw Blade. Also for other tools of low performance.Sometime for high loading mould, high temperature bearing and speical heat-resistance and wear resistant parts in areo.

 Anneal temperature （℃) 840-860     

Stress relief Temperature（℃）:600-650     

Quench temperature （℃）:1170-1190

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

Normal temperature of temper（℃）: 540-560      

Quench and temper HRC: 63-66 

Bending Strength(Mpa):    

Impact Toughness(MJ/㎡):  

HRC at 600℃(HRC):    

Character:High performance of low Alloy HSS. With related HRC,Red Hardness and strengthen.Good Hot reforming.Good Grindability.