DIN 1.2714 Hot Work Tool Steel | 56NiCrMoV7 | L6 | SKT4

DIN 1.2714 Steel is defined as Hot work Tool Steel as per DIN 17350 Germany standard( replaced by EN ISO 4957).With Min 1.0%Cr-0.45%Mo-1.5%Ni-0.07%V  alloy elements, it have high strength,high hardness and high wear-resistance.

DIN 1.2714 is generally supply in hardened, quenched & tempered condition (Hardness:370-410HBW), and also in annealed condition in special use.Due to its good performace, it is mainly used for forging dies,punches,plastic molds,and die holders etc.

DIN 1.2714 Round bar

1.DIN 1.2714 steel Supply Form & Size

Form of SupplySize(mm)Length(mm)
Round barΦ6-Φ1,0003,000-10,000
Square bar100x100-600x6003,000-6,000
Plate/SheetThickness :20-400
Width:80-1,000
2,000-6,000
Flat bar/BlcoksThickness :120-800
Width:120-1,500
2,000-6,000

2.Surface Finish&Tolerance

Surface FinishBlack-Forged Black-Rolled Turned   GrindingPolishedPeeledCold Drawn
Tolerance(0,+5mm)(0,+1mm)(0,+3mm)Best h9Best h11Best H11Best H11

3.Chemical Composition

GradeCSiMnPSCrNiMoV
1.2714
(56NiCrMoV7)
0.5-0.60.1-0.4 0.65-0.95≤ 0.03≤ 0.031.0-1.21.5-1.80.45-0.55
0.07-0.12

4.Related Specifications

ASTM:L6
JIS:SKT4
GB:5CrNiMo
DIN/EN/ISO:55NiCrMoV7

5.Heat Treatment & Mechanical Property
Quenching Details
1.Quench temperature:840-860℃
2.Keep suitable time for the steel to be thoroughly heated.
3.Oil or water quench.
4.Tempering immediately after quenched

DIN 1.2714 Quenching Diagram

DIN 1.2714 Quenching Diagram

Tempering Details
1.Temper temperature:500-600℃
2.Air cooling.DIN 1.2714 Tempering Diagram

DIN 1.2714 Tempering Diagram

DIN 1.2714 Hardness Vs Tempering temperature

Tempering Temperature,℃400-480500-550570-650
Hardness,HRC42-4638-4132-36

DIN 1.2714 Mechanical Property With Quenching and Tempering condition

Size
mm
Tensile
Mpa

Yield
Mpa

Elongation
%
Reduction
%
Charpy Impact
J
Surface Hardness
HB
Core Hardness
HB
Φ180125010001758.5L:55/54/42
T:37/36/25
377-394387-400
Φ305128010601655.5L:42/40/44
T:27/28/30
376-400370-386
300*300120010001856.5L:52/52/60
T:42/32/26
360-386360-368

Annealing Details
1.Annealing temperature:850-870℃
2.Enough soaking time for the steel heating
3.Cooling in the furnace.
4.Max hardness:229HBDIN 1.2714 Annealing Diagram

DIN 1.2714 Annealing Diagram