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1.2746

Home>Products>Cold Working Tool Steel>1.2746

cold working tool steel Mat.No. 1.2746, DIN 45NiCrMoV16-6 flat bar

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Specifications

Designation by Standards

Mat. No.DINENAISI
1.274645NiCrMoV16-6--


Chemical Composition (in weight %)

CSiMnCrMoNiVWOthers
0.450.250.701.500.794.000.50--


Description:

Special cold work tool steel, air or oil hardenable with highest toughness.


Applications:

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


Physical properties (average values) at ambient temperature

Modulus of elasticity [103 x N/mm2]: 210

Density [g/cm3]: 7.86


Soft Annealing:

Heat to 610-850°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 295.


Stress Relieving:

Stress relieving to remove machining stresses should be carried out by heating to approx. 650°C, 

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 880-910°C followed by air or oil quenching or warm bath quenching 180-220°C. Hardness after quenching is 56 HRC.


Tempering:

Tempering temperature: See the data bellow.

Tempering Temperature (oC) vs. Hardness (HRC)

100°C200°C300°C400°C500°C550°C
565452504948


Forging:

Hot forming temperature: 1100-900°C.


Machinability:

Good


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.

ItemDimension (mm)ProcessDelivery condition

Round Bar

DIA1.0 - 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

Sheets

T1.0 - 2.5Cold RolledBlack surface & Anneal
T 2.5 - 8.0Hot RolledBlack surface & Anneal



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