H13 Steel

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H13 Tool Steel , 2344, SKD61, 8407

AISI H13 Hot Work Tool Steel air hardening, with good toughness, resistance to abrasion and high red hardness. It resists softening to 550°C and has good resistance to heat checking. Will Nitride with a case hardness over 1000 V.P.N. Generally supplied annealed to HB 230 max.


Typical Applications:

Hot punches and dies for blanking, bending, swaging and forging, hot extrusion dies for aluminium, cores, ejector pins, inserts and nozzles for aluminium, tin and lead die casting.


2344 Tool Steel Chemical Composition

C Si Mn Cr Mo Ni V
0.37 to 0.42 0.80 to 1.20 ≤ 0.50 4.80 to 5.50 1.20 to 1.50 0.80 to 1.20



Common H13 Tool Steel Related Specifications

Country USA German Japan
Standard ASTM A681 DIN EN ISO 4957 JIS G4404
Grades H13 1.2344/X40CrMoV5-1 SKD61


AISI H13 Steel Mechanical Properties

Properties Metric Imperial
Tensile strength, ultimate (@20°C/68°F, varies with heat treatment) 1200 – 1590 MPa 174000 – 231000 psi
Tensile strength, yield (@20°C/68°F, varies with heat treatment) 1000 – 1380 MPa 145000 – 200000 psi
Reduction of area (@20°C/68°F) 50.00% 50.00%
Modulus of elasticity (@20°C/68°F) 215 GPa 31200 ksi
Poisson’s ratio 0.27-0.30 0.27-0.30



Machinability Machinability of H13 is medium to good. It rates as 75% that of the W group water hardening tool steels which are low alloy and of generally good machinability.






Heat Treatment Preheat to 1500 f and then heat to 1850 F. Hold at 1850 f for 15 to 40 minutes and then air cool (air quench).


   Tempering    Temper at 1000 F to 1200 F for Rockwell C of 53 to 38.              It is advisable to do a double temper by repeating the process and use 1 hour at temperature each time.


    Hardening See “Heat Treating” and “Tempering”.

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