P20+Ni Steel / DIN 1.2738 Steel Plate / AISI P20+Ni Plate

P20+Ni Steel / DIN 1.2738 Steel Plate /

AISI P20+Ni Plate

1.2738 Tool Steel is pre-hardened plastic mold steel as per German standard. It contains Cr-Ni-Mo as its enhancing element, and has relatively superior mechanical properties in similar grades of steel, such as 1.2311.

DIN 1.2738 is specially used for Plastic injection die moulds. The characteristics of a material are right sharpening, photo-etching properties with high purity and good homogeneity. DIN 2738 is upgraded version of plastic mold steel 0f 2311, which normally supply in Pre hardened condition. Hardness in as supplied condition 280-320 HB with having uniform hardness. The additional nickel content of 1 % increases through hardening. It has good machinability, suitable for Texturing, fine polishability, adequate corrosion resistance, vacuum-degassed steel.

Designation by Standards

Mechanical Properties

Physical Properties

The physical properties can vary slightly depending on the specific composition and heat treatment of the P20+Ni / DIN 2738 / AISI P20+Ni steel. It's always recommended to refer to the manufacturer’s specifications for precise information.

Heat Treatment & Processes

Heat Treatment

P20+Ni / DIN 2738 / AISI P20+Ni is already pre-toughened, thus no heat treatment is necessary if no particular needs exist.

Hardening

Harden from 840-870°C, followed by oil, and finally quench in oil/hot bath/air 180-220 °C. The hardness after quenching is approximately 52 HRC.

Tempering

After hardening, slowly heat the part to the tempering temperature; the minimum duration in the furnace is one hour for every 20 mm of part thickness; two tempering is advised.

Forging

1093-898 °C.

Stress Relieving

Approx. 650°C.

Normalizing

Approx 900°C

Annealing

The maximum Brinell hardness will be 235 after being heated to 710 to 740 °C for 2 to 5 hours, and then gently cooled to 600 °C additional cooling in air.

Welding

For the welding process, P20+Ni tool steel conventional methods are used.

Quenching

840-870 °C.