DIN 1.2311 Plastic Mold Steel

   

1.2311 is a mold steel produced according to German standards, the steel needs to be produced by the "ultra-pure" smelting process, one of the important application scenarios of this mold steel is: after the surface chrome-plating treatment, it is used for pressing plastics. In order to ensure that the surface chrome plating effect is good, it is required that the 1.2311 mold steel material shows a high degree of microscopic purity and excellent homogeneous structure, excellent polishability and photo-etching. The steel after pre-hardening heat treatment, processing and polishing performance is good, can be nitrided, suitable for chrome plating and other surface treatment, material hardness uniformity, good toughness, good machinability. 1.2311 of the gold organization for the martensite or bainite organization.

   

	C	Mo	Mn	Cr
min.	0.35	0.20	1.40	1.90
max.	0.40	0.30	1.60	2.10

   

A, 1.2311 prehardened plastic mold steel main chemical composition:

B,other grades: AISI P20, 40CrMnMo7.

C, smelting method: EF + LF + VD, argon protection electroslag.

D,the material characteristics and application areas: 1.2311 is a pre-hardened plastic mold steel material, delivery hardness of HB280-HB325, can also be negotiated delivery state (tempering state) other hardness ranges, such as HB300-HB340/HRC32-HRC36. 1.2311 mold steel material has good machinability, very suitable for texturized plastic products processing, compared with 1.2312 has a good mechanical processing performance, very suitable for texturized plastic products processing. Compared with 1.2312, it has better polishability.

E, With the forging, heat treatment related thermal process parameters.

①After forging annealing, annealed hardness HB ≤ 235.

② quenching hardening temperature: 840 ℃ -870 ℃.

③ quenching medium: oil or 180 ℃ -220 ℃ salt bath.

Tempering temperature: see tempering curve.

F, the delivery of tempered state grain size: in accordance with GB/T6394 rating, grain size ≥ 6.