Heat Treatment of "SK5"

Dear Sir,

As I know SK5 is a Japan tool steel. Its equivalant is DIN 1.1625.

Soft Annealing Temp 680-710 oC Hardness 190 HB 30 640 N/mm2

Hardening Temp (in water) 780-810 oC Tempering Temp 200-300 oC for hot working

and 180-300oC as a carbon tool steel Hardness after hardening 64 HRC Depth of Hardness 2.5 to 4 mm

On heat treatment all conditions required for tool steels should be followed.

I hope this information enough for your requirements.

Regards

Taner Mersin

Thank you for your information. It is very helpful.

Carbon Tool Steel

JIS Notation SK5

Chem. Comp% C=0.8>0.9, Rest max.>: Si--0.35 ,Mn 0.5, P,S 0.03

Used for making: Steel Stamp, Snap,Press Die, Spring, Band Saw, Circular Saw, Pen Nib etc

Heat Treatment :

1. To Anneal: Slow Cool from 730>760 degC Final HB 207max.

2. To Harden: Quench in Water from 760>820 degC

3. To Temper: Air Cool from 150>200 degC

After Hardening&Tempering you get Hardness Minimum HRC59

8888888888888888888888888The above is from JIS Handbook