Product Attribute:
Material:Steel
Material Quality:ISO900
Applicationt: 
DIN 1.2312 steel is a general-purpose low-alloy tool steel, mainly used for large plastic molds and mold bases, such as car bumpers, TV housing mold shells, etc., and also used for tool holders, die-casting low-point metal mold materials, assembly parts , forming frames, fixtures, base plates, hydroforming tools, and more.
Production Description:
1.2312 steel material is a great plastic mold steel in the industry. 1.2312 (40CrMnMoS8-6) belongs to the stand of alloy tool steel of DIN. And many people also call it as 2312 steel. Its polishing property and machinability are good. And the hardness of everywhere is average with high wear resistance. DIN 1.2312 steel material usually be used in the blowing mould, structural parts, forming tools, injection mold due to the good hardness, high-temperature strength and mechanical property.
P20+S Steel Grade Equivalent Chart
Country |
USA |
Germany/UK/France |
Standard |
ASTM/AISI |
EN ISO 4957 |
Grades |
P20+S |
1.2312 |
1.2312 Steel Chemical Composition
Grade |
C (%) |
Mn (%) |
S (%) |
P (%) |
Cr (%) |
Mo (%) |
Si (%) |
1.2312 |
0.35-0.45 |
1.40-1.60 |
0.05-0.10 |
0.03 |
1.80-2.00 |
0.15-0.25 |
0.30-0.50 |
1.2312 Steel Physical Properties
Density |
Linear Expansion Coefficient |
Thermal Conductivity |
7.84 g/cm3 |
12.4 *10-6m/(m*K) |
34 W/(m*K) |
P20+S Steel Mechanical Properties
Mechanical properties |
Metric |
Imperial |
Hardness, Brinell |
300 |
33 |
Hardness, Rockwell C (typical) |
30 |
30 |
Tensile strength, ultimate |
965-1030 MPa |
140000-150000 psi |
Tensile strength, yield |
827-862 MPa |
120000-125000 psi |
Elongation at break(in 50 mm (2)) |
20.0% |
20.0% |