TG W9341 High Speed Steel

Usage :It can be used to produce different kinds of too instead of W18 and M2.

Characteristic:It is current hss developed in our country .Its service performance is equal to that of W18Cr4V(T1) and W6Mo5Cr4V2(M2).

Chemical Composition : (％)

C	W	Mo	Cr	V	Mn	Si	P	S
0.77-0.87	8.50-9.50	2.70-3.30	3.30-4.40	1.30-1.70	0.20-0.40	0.20-0.40	≤0.03	≤0.02

UNDER ANNEALED CONDITION

Hardness:HB205-255

Delivery status :

As Cold drawn/ Hot rolled/ forged,in annealed condition.

Size :

Cold drawn bar:￠2.2-14.2mm

Hot rolled bar:￠8.0-80.0mm

Forged bar:￠81.0-250.0mm

Coil:￠6.5-16.0mm

Heat Treatment :

Annealing:

Annealing temperature:860-880℃,keep this temperature by 2-4 hours,then cooling to 600 in the speed of 20-30℃/h

if after cold drawn precess,suggest add stress relieving annealing process

Under the temperature of 600-700 ℃,keep this temperature by 2 houres.

Quenching & Tempering (salt bath)

Quenching:

Pre-heating in two steps:

Heating temperature under:400-500 and 850-900℃

Austenitizing temperature:1190-1230℃

Heating coefficient 10-15sec/mm,quenching under 580-620℃,then cooling to room temperature.

Tempering:

Tempering temperature under:540-560℃,tempering 3 times,each time 1 hour, then cooling to room temperature.