1.2344 H13 SKD61 tool steel flat

1. Chemical composition

C(％)	0.37～0.42	Si(％)	0.90～1.20	Mn(％)	0.30～0.50	P(％)	≤0.030
S(％)	≤0.030	Cr(％)	4.80～5.50	Mo(％)	1.20～1.50	V(％)	0.90～1.10

2. Equivalent Of 1.2344 hot work alloy tool steel

USA	Germany	China	Japan	France
ASTM/AISI/SAE/UNS	DIN,WNr	GB	JIS	AFNOR
H13 / T20813	X40CrMoV5-1/ 1.2344	4Cr5MoSiV1	SKD61	X40CrMoV5/Z40CDV5

England	Italy	Poland	ISO	Austria	Sweden	Spain
BS	UNI	PN	ISO	ONORM	SS	UNE
BH13	X40CRMOV511KU		40CrMoV5		2242	X40CRMOV5

3. Heat treatment Related

Annealing of 1-2344 Tool steel

At first, Slowly heated to 750-780 ℃ and allow enough times, let the steel to be thoroughly heat, Then cool slowly in the furnace. Then the 2344 tool steel will get MAX 250 HB （Brinell hardness）.

Hardening of 1-2344 tool steel

1.2344 steels should be heated uniformly to 1020-1060°C. until completely heated through. And if needed, the steels can be preheated at 300-500°C (572-932°F). About 30 min per 25 mm of ruling section is to be provide and then the steels should be immediately quench in oil or air.

Tempering of 1.2344 tool steel

At first, tempering of 1.2344 steels is performed at 550-650°C, Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Then get Rockwell C hardness of 56 to 38.

Temperature [℃] 400 500 550 650

Hardness [HRC] 53 56 54 47

4. Mechanical Properties

The mechanical properties of 1.2344 tool steels are outlined in the following table.

Tensile strength, ultimate (@20°C/68°F, varies with heat treatment)	Tensile strength, ultimate (@20°C/68°F, varies with heat treatment)	Reduction of area (@20°C/68°F)	Modulus of elasticity (@20°C/68°F)	Poisson’s ratio
MPa	MPa		Gpa
1200-1590	1000-1380	50%	215	0.27-0.30

5. Applications

And 1.2344 steels are mainly used for forming extrusion dies. Typical applications include casting molds aluminum, magnesium, zinc, copper and aluminum extrusion dies, liners, spindles, pressure pad, followers, pad, die, the death and the adapter ring copper and brass extrusion.

Moreover, 1.2344 is used to produce hot stamping and extrusion die forging, thermal upsetting dies, jigs mold, hot embossing, punching, trimming tools. Other applications include plastic molds, shear blades for heat and hot extrusion dies.