Material 1.2312

Steel 1.2312 - tool steel with uniform strength

Machinable, uniform strength and easy to quench and temper - tool steel 1.2312 complies with DIN/EN 40CrMnMoS8-6 and belongs to the cold work tool steel material group. As plastic mold steel, it is popularly used for high-strength mold frames.

Chemical composition & properties

The tool steel consists of C 0.4, of Si 0.4, Mn 1.5, Cr 1.9, Mo 0.2 and S 0.1. Thus it is very similar to the material 1.2311, only in the sulfur addition the two steels differ.

The consequences: The 1.2312 steel is easier to machine. In addition to good machinability, the tool steel offers good dimensional stability and good toughness. After nitriding, the steel is wear-resistant. The material cools slowly and offers uniform hardness for large cross sections. Hardening is not common, as the material is gate quenched and tempered. The material is only suitable for technical polishing to a limited extent. The density of the steel is 7.85 kg/dm3, and the modulus of elasticity is 210 kN/mm2. The steel has a thermal conductivity of 34.5 W/(m.K) and a specific heat of 460 J/(kg-K).

This allows it to be soft annealed at 710 to 740 degrees Celsius, with furnace cooling of four to six hours. Stress-relieved annealing is possible at 650 to 680 degrees Celsius, with furnace cooling of two to three hours. The steel hardens at 840 to 870 degrees Celsius (oil, hot bath or air). A maximum hardness of 220 HB can be achieved by annealing.

Use of material 1.2312

The tool steel is very suitable for high-strength mold frames as well as for medium and large molds. It is often used in the plastics industry, but our customers for steel 1.2312 also come from the mechanical engineering sector. The steel can be used for mold superstructures as well as for structural parts. The properties of the steel can be put to good use for tools for non-cutting shaping.

The cold work steel is very suitable for handling thermosets as well as thermoplastics. Plastic molds and die casting molds can be made well from it. The sulfur-containing tool steel is even suitable for injection molds, as these place high demands on hardness distortion. For example, steel 1.2312 can be used very well for molds from which seating furniture or bottle crates are made, in which buckets or tubs are manufactured.

Steel 1.2312 - tool steel with uniform strength

Machinable, uniform strength and easy to quench and temper - tool steel 1.2312 complies with DIN/EN 40CrMnMoS8-6 and belongs to the cold work tool steel material group. As plastic mold steel, it is popularly used for high-strength mold frames.

Chemical composition & properties

The tool steel consists of C 0.4, of Si 0.4, Mn 1.5, Cr 1.9, Mo 0.2 and S 0.1. Thus it is very similar to the material 1.2311, only in the sulfur addition the two steels differ.

The consequences: The 1.2312 steel is easier to machine. In addition to good machinability, the tool steel offers good dimensional stability and good toughness. After nitriding, the steel is wear-resistant. The material cools slowly and offers uniform hardness for large cross sections. Hardening is not common, as the material is gate quenched and tempered. The material is only suitable for technical polishing to a limited extent. The density of the steel is 7.85 kg/dm3, and the modulus of elasticity is 210 kN/mm2. The steel has a thermal conductivity of 34.5 W/(m.K) and a specific heat of 460 J/(kg-K).

This allows it to be soft annealed at 710 to 740 degrees Celsius, with furnace cooling of four to six hours. Stress-relieved annealing is possible at 650 to 680 degrees Celsius, with furnace cooling of two to three hours. The steel hardens at 840 to 870 degrees Celsius (oil, hot bath or air). A maximum hardness of 220 HB can be achieved by annealing.

Use of material 1.2312

The tool steel is very suitable for high-strength mold frames as well as for medium and large molds. It is often used in the plastics industry, but our customers for steel 1.2312 also come from the mechanical engineering sector. The steel can be used for mold superstructures as well as for structural parts.

Do you have any questions about the material or would you like to order? Complete our inquiry form, it`s free of charge and without obligation. We will get in touch with you in order to provide you with more information.