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Mat.No. 1.2008/DIN 140Cr3/C 70W2/UC70KU

Low alloyed carbon tool steel with good hardenability.
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  • Mat.No. 1.2008/DIN 140Cr3/C 70W2/UC70KU

Designation by Standards

Mat. No.DINENAISI
1.2008140Cr3--


Chemical Composition (in weight %)

CSiMnCrMoNiVWOthers
1.420.230.330.55-----


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 720-760oC, 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. 650oC, 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 770-810oC or 780-840oC followed by water or oil quenching. Hardness after quenching is approx. 66 HRC.


Tempering

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


Tempering Temperature (oC) vs. Hardness (HRC)

100oC200oC300oC400oC500oC
6663.558.551.542


Forging

Hot forming temperature: 1000-800oC.


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 purposes. There is no representation that the recipient of this literature will receive updated editions as the become available.


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