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1.2767

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cold working tool steel 1.2767 block

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Specifications

Description:

Mat.No. 1.2767, DIN X45NiCrMo4

Designation by Standards

Mat. No.DINENAISI
1.2767X45NiCrMo440NiCrMoV16-

Chemical Composition (in weight %)

CSiMnCrMoNiVWOthers
0.450.250.351.350.254.05---

Description:

Nickel cold work tool steel. Good hardenability and toughness. Ability for polishing, photoetching and erosion treatment.

Applications:

Forging tools, dies of all sort, shapes and sizes, hot forging and pressing tools for steel and metal. Moulds, bushings, piercers, etc.

Physical properties (average values) at ambient temperature

Density [g/cm3]: 7.84

Thermal conductivity [W/m.K]: 28.0

Coefficient of Linear Thermal Expansion 10ˉ6 oCˉ1

20-100°C20-200°C20-300°C20-400°C20-500°C20-600°C
11.712.513.013.413.713.8

Soft Annealing:

Heat to 610-850°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 262.

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 840-870°C followed by oil. air or warm bath (180-220°C) quenching. Hardness after quenching is 56 HRC.

Tempering:

Tempering temperature: 150-400°C.

Tempering Temperature (°C) vs. Hardness (HRC)

100°C200°C300°C400°C500°C600°C
565450464238
ItemDimension (mm)ProcessDelivery condition
Round BarDIA1.0 - 30Cold-drawing / Centerless grindingBright & Anneal
DIA20 - 80PeelingBright & Anneal
DIA 13-180Hot RolledBlack surface & Anneal
DIA 70 - 400Hot Rolled&Hot ForgedBlack surface & Anneal
Flat BarT 3.0-20 X W 20-100Hot RolledBlack surface & Anneal
BlockT 20-200 X 300-800Hot Rolled & Hot ForgedBlack surface /Machine & Anneal
Wire RodDIA 5.5 - 13Hot RolledBlack surface & Anneal
SheetsT1.0 - 2.5Cold RolledBlack surface & Anneal
T 2.5 - 8.0Hot RolledBlack surface & Anneal


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