DIMO 2312 (EN 1.2312)

DIMO 2312 (EN 1.2312)

DIMO 2312 (EN 1.2312) introduction

DIMO 2312 is a hardened CrMnMoS-alloyed tool steel for the construction of plastic molds with lower
surface requirements referring to e.g. polishability and photoetchability. DIMO 2312 is characterized by
excellent machinability and high dimensional stability.

DIMO 2312 is a modified version of 1.2312 according to Stahl-Eisen-Liste, respectively 40CMD8+S
according to NF A 35590, 40CrMnNiMo8-6-4 according to DIN EN ISO 4957 and a modified version of
P20 according to ASTM A681.

Equivalent material: EN 40CrMnNiMo8-6-4, DIN 40CrMnNiMo8-6-4, ASTM Grade P20, NF 40CMD8+S

DIMO 2312 (EN 1.2312) general

Property Value Comment
Hardness, Brinell Hardness, Brinell of 280 - 325 [-] HBW | delivery condition (air hardened + tempered)
Tensile strength Tensile strength of 890 - 1030 MPa according to EN ISO 18265 table B2

DIMO 2312 (EN 1.2312) chemical

Property Value Comment
Carbon Carbon of 0.35 - 0.45 % limiting values
- Carbon of 0.4 % auxiliary data for 100 mm plate thickness
Chromium Chromium of 1.8 - 2 % limiting values
- Chromium of 1.9 % auxiliary data for 100 mm plate thickness
Iron -
Manganese Manganese of 1.4 - 1.6 % limiting values
- Manganese of 1.5 % auxiliary data for 100 mm plate thickness
Molybdenum Molybdenum of 0.15 - 0.25 % limiting values
- Molybdenum of 0.2 % auxiliary data for 100 mm plate thickness
Nickel Nickel of 0.15 % auxiliary data for 100 mm plate thickness (alloyed depending on dimensions)
Phosphorus Phosphorus of 0.022 % auxiliary data for 100 mm plate thickness
- Phosphorus of 0.03 % max. limiting values
Silicon Silicon of 0.3 - 0.5 % limiting values
- Silicon of 0.35 % auxiliary data for 100 mm plate thickness
Sulfur Sulfur of 0.05 - 0.1 % limiting values
- Sulfur of 0.06 % auxiliary data for 100 mm plate thickness
Vanadium Vanadium of 0.05 % auxiliary data for 100 mm plate thickness (alloyed depending on dimensions)

DIMO 2312 (EN 1.2312) electrical

Property - -
Application areas
Chemical composition
Delivery condtion
General note
Heat Treatment
Other Thickness ≥ 12 ≤ 130 mm ≥ 1⁄2 ≤ 5 in > 130 ≤ 215 mm > 5 ≤ 8.5 in
Width ≥ 1000 ≤ 2500 mm ≥ 40 ≤ 98.25 in ≥ 1000 ≤ 2050 mm ≥ 40 ≤ 80.5 in
Length ≥ 3000 ≤ 6000 mm ≥ 119 ≤ 236 in ≥ 3000 ≤ 6000 mm ≥ 119 ≤ 236 in

DIMO 2312 (EN 1.2312) mechanical

Property Temperature Value Comment
Coefficient of thermal expansion - Coefficient of thermal expansion of 1.21e-05 1/K 20-100 °C
- - Coefficient of thermal expansion of 1.27e-05 1/K 20-200 °C
- - Coefficient of thermal expansion of 1.32e-05 1/K 20-300 °C
- - Coefficient of thermal expansion of 1.38e-05 1/K 20-400 °C
- - Coefficient of thermal expansion of 1.42e-05 1/K 20-500 °C
- - Coefficient of thermal expansion of 1.43e-05 1/K 20-600 °C
Specific heat capacity - Specific heat capacity of 460 J/(kg·K) -
Thermal conductivity 20 °C Thermal conductivity of 34 W/(m·K) -
- 100 °C Thermal conductivity of 35 W/(m·K) -
- 200 °C Thermal conductivity of 36 W/(m·K) -
- 300 °C Thermal conductivity of 36 W/(m·K) -
- 400 °C Thermal conductivity of 36 W/(m·K) -

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