Material 1.2714

Hot work tool steel

Special alloys for tool making: Hot work tool steel | Properties of material 1.2714

Toolmakers manufacture instruments for the production of objects from a wide variety of materials. In order to succeed in giving these materials a shape, the tool must be harder than the starting material to be machined at the respective working temperature. The working temperature is a decisive criterion. It influences the hardness of the tool steels. For the above reason, we distinguish cold work steel and hot work steel.

Characteristics of hot work tool steel & special properties of material 1.2714

The hardness values of hot work steels do not reach those of cold work tool steels. This is due to the fact that the metals to be processed are equally softer in the hot state. In line with this, the carbon content of hot work tool steel is lower and in the majority of cases ranges between 0.25 and 0.55%. Material 1.2714 has a carbon content of 0.55%.

Chemical Composition (in weight %)

C	Si	Mn	Cr	Mo	Ni	V	P&S
0.50-0.60	0.10-0.40	0.60-0.90	0.80-1.20	0.35-0.55	1.50-1.80	0.05-0.15	Max 0.030

Description

Nickel hot work tool steel with good hardenability. Uniform hardness over section also at great dimensions. Resistance under impact loadings. Very good strength and toughness. Good tempering resistance and dimensional stability. Tools can be water or air cooled.

Applications

Forging tools, dies of all sorts, shapes and sizes, hot forging and pressing tools for steel and metal. Moulds, bushings, pierces etc.
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 215
Density [g/cm3]: 7.84
Thermal conductivity [W/m.K]: 36.0
Electric resistivity [Ohm mm2/m]: 0.30
Specific heat capacity[J/g.K]: 0.46

Soft Annealing

Heat to 650-700℃, cool slowly in furnace. This will produce a maximum Brinell hardness of 248.

Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to 650℃, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.

Hardening

Oil: Harden from a temperature of 830-870℃ followed by oil quenching. Hardness after quenching is 58 HRC.
Air: Harden from a temperature of 830-900℃ followed by air quenching. Hardness after quenching is 56 HRC.

Tempering

Tempering temperature: See the data bellow.

Quenching in oil:
Tempering Temperature (℃) vs. Hardness (HRC)vs. Hardness (HRC) vs. Tensile Strength (N/mm2)

100℃	200℃	300℃	400℃	450℃	500℃	550℃	600℃	650℃
57	55	52	49	47	45	42.5	39	35
2140	1980	1790	1620	1530	1440	1345	1230	1110

Quenching in air

Tempering Temperature (℃) vs. Hardness (HRC) vs. Hardness (HRC) vs. Tensile Strength (N/mm2)

100℃	200℃	300℃	400℃	450℃	500℃	550℃	600℃	650℃
55	53	50	47	45	43	40	37	32
1980	1845	1680	1530	1440	1360	1260	1170	1020

Wholesale Price

800-1000USD

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