1.2767

1.2767/5CrNi4Mo/6FT 1. size: dia60-380mm length:1500-6000mm 2. delivery status:black/grinded/machined

1.2767/5CrNi4Mo/6FT 

1 Applications

Nickel cold work tool steel. Goof hardenability and thougness. Ability for polishing, photoetching and erosion treatment.  Forging tools, dies of all sort, shapes and sizes, hot forging and pressing tools for steel and metal. Moulds, bushings, piercers, etc. 

2 Physical properties (avarage values) at ambient temperature Thermal conductivity [W/m.K]: 28.0 

Density [g/cm3]: 7.84

3 Chemical Composition (in weight %)

C	Si	Mn	Cr	Mo	Ni	V	W	Others
0.45	0.25	0.35	1.35	0.25	4.05	-	-	-

4. Soft AnnealingHeat to 610-850oC, cool slowly in furnace. This will produce a maximum Brinell hardness of 262.5. Stress RelievingStress relieving to remove machining stresses should be carried out by heating to 650oC, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.6. HardeningHarden from a temperature of 840-870oC followed by oil. air or warm bath (180-220oC) quenching. Hardness after quenching is 56 HRC.

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Technical Process

steel scrap

smelting electric furnace

chemical components test

ingots

forging- 10 tons electro-hydraulic hammer

annealing & spheroidizing

band saw cutting

peeling & turning lathe for steel round bar

flaw detection

package- as customer required

delivery

shipping container

1.2767