UTOPCO2
  
Identification

 

Designation by Standards
Brand Name Ravne No. Mat. No. DIN EN AISI
UTOPCO2 861 1.2885 X32CrMoCoV3-3-3 - H10A

 

Chemical Composition

 

Chemical Composition in Weight %
C Si Mn Cr Mo Ni V W Others
0.32 0.25 0.30 2.95 2.80 - 0.55 - 2.75 % Co

 

General Information

Description
This alloy is on of the hot work, cobalt containing tool steel.

Applications
Hot pressing tools exposed to severe stresses in contact with the die insert - mandrels, stamps, punching tools, dies, etc.

 

Properties


Physical properties (avarage values) at ambient temperature:
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.88
 

Coefficient of Linear Thermal Expansion 10-6 oC-1
20-100 'C 20-200 'C 20-300 'C 20-400 'C 20-500 'C 20-600 'C 20-700 'C
12.1 12.1 12.4 12.9 13.5 14.0 14.1


Continuous Cooling Transformation (CCT) Diagram



 

Heat Treatment

Soft Annealing
Heat to 800-840 'C, cool slowly in furnace. This will produce a maximum Brinell hardness of 250.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 650 'C, 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 1020-1060 'C followed by oil, air or warm bath quenching. Hardness after quenching is 49-53 HRC.

Tempering
Tempering temperature: See the table and diagram bellow.

Tempering Temperature ( 'C) vs. Hardness (HRC)
400 'C 500 'C 550 'C 600 'C 650 'C 700 'C
49 50 51 50 44 37

Effect of Tempering Temperature on Hardness

 

Workability


Forging
Hot forming temperature: 1100-990 'C.

Machinability
No data.