Cold work tool steel

DIN 1.2767 Tool Steel Bar

DIN 1.2767 Tool Steel Bar
DIN 1.2767 Tool Steel Bar
DIN 1.2767 Tool Steel Bar
DIN 1.2767 Tool Steel Bar

Description

Reviews

DIN 1.2767 Cold Work Tool Steel
DIN 1.2767 Cold Work Tool Steel is used for making the highly stressed coining tools, cutlery dies, hobbing tools, cold shear blades for heavy gauge material, plastic moulds.

Dimensions
Round: dia.10-500 mm
Flat: 6-120 x 40-810 mm
Block: 80-400 x 100-700 mm
Delivery Condition
EAF+(ESR) or EAF+LF+VD+(ESR), Hot rolled or Forged, Spheroidizing Annealed, Black surface or Machined surface, UT SEP1921 Class3 D/d
Equivalence
AISI / SAE DIN / W.Nr JIS GB
---- 1.2767 SKT6 ----
Chemical Composition(%)
Steel Grade C Si Mn P S Cr Mo Ni
1.2767 0.40-0.50 0.10-0.40 0.20-0.50 ≤ 0.030 ≤ 0.030 1.20-1.50 0.15-0.35 3.80-4.30
Characteristics

1. Cold work tool steel with high thoughness and full hardenability, also large dimensions.

2. High impact strength and compressive strength.

3. For oil and air hardening.

4. Good polishability.

Heat Treatment

Annealing

610 to 650°C

Slow controlled cooling in furnace at a rate of 10 to 20°C/hr down to approx. 600°C, 

further cooling in air.

Hardness after annealing: max. 285 HB.

 

Stress relieving

Approx. 650°C

Slow cooling in furnace; intended to relieve stresses set up by extensive machining, or incomplex shapes. After through heating, hold in neutral atmosphere for 1 to 2 hours.

 

Hardening

840 to 870°C

Oil, salt bath (300 to 400°C), air. Holding time after temperature equalization: 15 to 30 minutes.

Obtainable hardness:

53 - 57 HRC in air.

54 - 58 HRC in oil or salt bath.

 

Tempering

Slow heating to tempering temperature immediately after hardening/time in furnace 1hour for each 20 mm of work piece thickness, but at least 2 hours/cooling in air. For certain cases we recommend to reduce tempering temperature and increase holding time.

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