Plastic Mould Steel 2738

Main Characteristic

2738 is in the class of Plastic mold that was develoed from 2311 by adding Nickel 1.0%
Selling condition is quench and tempered
So, free from size changing after hardening
Hardness range is 280-325 HB (29-34 HRC)
Suitable for big size plastic mold which thickness over 400 mm
High strength with hardening ability
Made of steel that pass degassing process in vacuum result in polishing ability
Can do texturing or EDM
Also, can do surface hardening by various procedure.

OutStanding Properties

Texturing and Polishing properties at high level, thanks to low sulfer.
Polishing ability are better than 2312

  High strength suitable to plastic mold
  Strength better than 2311
  Well machining ability
  Texturing polishing and EDM is easy
  Homogeniety hardness thorugh the whole section
  Risk free of damange from hardening process
  Can enhance surface hardness through induction or carburizing or Nitriding
  Can do hard chrome or nickel plating


2738 is a tool steel for plastic mold that posses high hardening ability and sell in harden and temper condition
Hardness is in range 1000 N/mm2 suitable for big size plastic mold thickner than 400 mm
Good for making tool in steel forming
Production through vacuum degassin process of steel making
High performance in polishing, machining, texturing
Sample of usage are as below
Blow / injection plastic mold especially thermo plastic that is free from abrasive
Mold frames for plastic mold and die casting mold
Sleeves and die holder for extrusion

P 20+Ni
1.2738 / 40CrMnNiMo 8-6-4
ชุบแข็งและอบคืนตัว 280-320 HB
Chemical Composition
ส่วนผสมทาง เคมี (%wt.)
สภาพจําหน่าย Selling Condition
C Mn Cr Mo Ni
0.4 1.5 1.9 0.2 1
2738 คุณสมบัติทั่วไป (General Characteristic)