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1.2738 40crmnnimo8-6-4 Plastic Mould Steel
Sep 16, 2017

Basic Info

  • Model NO.: 1.2738 40CrMnNiMo8-6-4

  • Standard: DIN, BS

  • Surface Treatment: Black, Grinded, Peeled, Rough Turned, Polished

  • Application: Container Plate

  • Stock: Stock

  • Quality Standard: BS En ISO 4957

  • Steel-Making Condition: Ef, Ef/Eaf+Lf+Vd, Ef/Eaf+ESR

  • Transport Package: Seaworthy Packing

  • Origin: Huangshi, China

  • Type: Steel Plate

  • Certification: ISO, SGS

  • Technique: Forged.Rolled

  • Special Use: High-strength Steel Plate

  • Similar Grades: 1.2738 40crmnnimo8-6-4

  • MOQ: 2t

  • Trademark: kaixin

  • Specification: 1.2738 40CrMnNiMo8-6-4

  • HS Code: 7228600000

Product Description

Similar Grade: 1.2738 P20+Ni 718 

Shape: Round, Flat, Square.

Size Range:

Diameter(mm)Thickness (mm)Width (mm)Length(mm)

Steel-making Condition: EF, EF/EAF+LF+VD, EF/EAF+ESR

Delivery Condition:
Annealed , Quenched + Tempered

Surface Condition: 
Black, Grinded, Peeled, Rough turned, Polished

1.Competitive price
2.Immediate delivery
3.Premium quality
4.Reliable service
5.MOQ: 2Ton

Packing detailsIn seaworthy packing, as your requirement.
Delivery detailswithin 30-50 days

Chemical Composition:

1.27380.35-0.450.20-0.401.30-1.600.030 max0.030 max1.80-2.100.90-1.200.15-0.25

Heat Treatment:

Annealing:Annealing temperature: 710 ~ 740 °C, holding time is decided by the thickness of the DIN 1.2738 die steel, one hour per 25mm. Colding in furnace after thermal insulation.
Destressing: Heating temperature: 600 °C (annealed condition), 550 °C (quenching and tempering state), holding time is decided by the thickness of the 1.2738 steel, one hour per 50mm. Colding in furnace after thermal insulation.
Quenching and tempering:
Preheating temperature 500 ~ 600 °C, quenching temperature 840 ~ 880 °C, holding 30min (the mold have to quenching in the protective gas to prevent oxidation and decarbonization). Oil cooling, cooling to 50 ~ 70 °C,immediately tempered. Tempering holding time is decided by the thickness of the 1.2738 steel mould, one hour per 25mm, at least 2h. Tempering temperature: 180 °C / 200 °C / 300 °C / 400 °C / 500 °C / 600 °C, the hardness: 52HRC / 51HRC / 48 HRC / 46HRC / 42HRC / 34HRC.
Large plastic moulds with deep engravings and intensive impacts on the core. 1.2738 Pre
hardened Plastic Mold Steel is the logical development of 1.2311, a pre-hardened plastic mould steel for use in large moulds, which also have to display high core strength. The additional nickel content of 1 % increases through hardening. 1.2738 is a micro-alloyed, vacuum-degassed steel with the following excellent features: good machinability, outstanding polishability, good texturing properties.
1.2738 Pre-hardened Plastic Mould Steel, hardness in as-delivered condition 280 to 325 HB. Good machinability, suitable for texturing, improved through hardening in comparison to 1.2311, good polishability.

Hubei Kaixin Supply Chain Management Co., Ltd.

TEL +8618272169977 ; 0714-6510168



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