EN 1.1233 (56Mn4) Induction-Hardening Bearing Steel
Carbon & Non-Alloy Steels
annealed
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength680MPa
Yield Strength360MPa
Brinell Hardness200HB
Maximum Service Temperature400°C
Chemical Composition
C
0.52 to 0.6%
MN
0.9 to 1.2%
SI
0 to 0.4%
P
0 to 0.025%
S
0 to 0.030%
CU
0 to 0.3%
AL
0 to 0.050%
O
0 to 0.0020%
FE
98 to 99.1%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
24 %
Fatigue Strength
260 MPa
Poisson's Ratio
0.29
Shear Modulus
72 GPa
Shear Strength
430 MPa
Tensile Strength: Ultimate (UTS)
680 MPa
Tensile Strength: Yield (Proof)
360 MPa
Hardness
Brinell Hardness
200
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
400 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
51 W/m-K
Thermal Diffusivity
14 mm 2 /s
Thermal Expansion
12 µm/m-K
Thermal Shock Resistance
22 points
Electrical
Electrical Conductivity: Equal Volume
7.1 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.2 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
140 MJ/m 3
Resilience: Unit (Modulus of Resilience)
340 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
24 points
Strength to Weight: Bending
22 points
Environmental
Base Metal Price
1.9 % relative
Embodied Carbon
1.4 kg CO 2 /kg material
Embodied Energy
19 MJ/kg
Embodied Energy
19 MJ/kg 8.1 x 10 3 BTU/lb
Embodied Water
47 L/kg
Embodied Water
47 L/kg 5.6 gal/lb
Registered Designations & Aliases
1.123356Mn4EN 1.1233 (56Mn4) Induction-Hardening Bearing Steel
Standards
ISO 683-17 ISO 683-17: Heat-treated steels, alloy steels and free-cutting steels - Part 17: Ball and roller bearing steels