Mat.No. 1.2008, DIN 140Cr3

Designation by Standards

Chemical Composition (in weight %)

Description
Low alloyed cold working tool steel.

Applications
Cold work tools for grey cast iron, brass, copper, stone etc.

Physical properties (avarage values) at ambient temperature
Modulus of elasticity [10³ x N/mm²]: 210
Density [g/cm³]: 7.80

Soft Annealing
Heat to 720-760^oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 220.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650^oC, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening
Harden from a temperature of 770-810^oC, 780-840^oC followed by water or oil quenching. Hardness after quenching is approx. 66 HRC.

Tempering
Tempering temperature: 150-200^oC. Average hardness after tempering is 60-65 HRC.

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

Tempering Diagram

Forging
Hot forming temperature: 1000-800^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.