AISI S5

Designation by Standards

Chemical Composition (in weight %)

Description
Cold work tool steel. Shock resisting tool steel with good toughness at high strength levels. 

Applications
Different cutting parts, chisels, rivet sets, punches, driver bits. 

Physical properties (avarage values) at ambient temperature
Density [g/cm³]: 7.74

Coefficient of Linear Thermal Expansion 10^-6 oC^-1

Continuous Cooling Transformation (CCT) Diagram

Time-Temperature Transformation (TTT) Diagram

Soft Annealing
Heat to 770-800^oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 229.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 650^oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 880-920^oC followed by oil quenching. Hardness after quenching is 63 HRC.

Tempering
Tempering temperature: See the data bellow.

Tempering Temperature (^oC) vs. Hardness (HRC)

Tempering Diagram

Forging
Hot forming temperature: 1050-900^oC. 

Machinability
No data.

Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.