H13 Tool Steel

H13 Tool Steel is chromium hot work tool steels which are widely used in hot and cold work tooling applications.


H13 Tool Steel , 1.2344, 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


H13 Tool Steel equivalent

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


AISI H13 material 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


H13 Tool steel 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).


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.


What kind of steel is H13?
H13 Tool Steel is a versatile chromium-molybdenum hot work steel that is widely used in hot work and cold work tooling applications. The hot hardness (hot strength) of H13 resists thermal fatigue cracking which occurs as a result of cyclic heating and cooling cycles in hot work tooling applications.
What is H13 steel used for?
H13 is widely used for aluminum and zinc casting dies, as well as for aluminum extrusion, aluminum die casting and press tooling. This grade is ideal for a range of hot work and cold work applications—particularly hot work applications where drastic cooling is required throughout its operation.