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DIN 1.2738 / AISI P20+Ni

DIN 1.2738 / AISI P20+Ni



Product Description

1.2738 / P20+Ni Plastic Mould Steel

Standards

DIN

AISI

JIS

ГОСТ

X40CrMnNiMo8-6-4

1.2738

P20+Ni

 

4Х2ГНМ

 

Chemical composition (typical analysis in %)

C

Si

Mn

P

S

Cr

Mo

Ni

0.35-0.45

0.20-0.40

1.30-1.60

≤0.030

≤0.030

1.80-2.10

0.15-0.25

0.90-1.20

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Steel properties :

Chrome-manganese-nickel-molybdenum steel for hardening in air or in oil with good hardenability and good firmness during the heat. It is well-workable during the heat and well-workable in the soft-annealed state and it has good polishability. The steel has a high ability of the heat treatment into big depths (better than DIN 1.2311) with the balanced process of firmness around the whole cross-section. It is appropriate for nitriding and hard-chroming.

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Applications :

 

For Injection moulds for thermoplastics, extrusion dies for thermoplastics, plastic piping & plumbing injection molds. Blow molds, forming tools, press – brake dies (possibly flame hardened or nitrided ). Aluminium die casting prototype dies, structural components, shafts. Pet preform mold, Standard Mould Base, Compression Mould for SMC, Cavitations Molds.

 

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Size range :

Diameter (mm)

Thickness (mm)

Width (mm)

50 - 500

20 - 405

Max 1000

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Delivery condition :

Soft annealed to max. 235 HB

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Heat Treatment:

Soft annealing

Temperature(°C)

Cooling

Hardness

710 - 740

furnace

max. 235 HB

 

Forging

Temperature(°C)

Cooling

 

 

850 - 1050

furnace

 

 

Hardening

Temperature(°C)

Cooling

Tempering

 

840 - 870

oil or air

see tempering diagram

 

 

 

Remarks: All technicial information is for reference only.

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