EN 1.6553 (G25NiCrMo3) Cast Steel
Alloy Steels
quenched and tempered
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength710MPa
Yield Strength470MPa
Brinell Hardness210HB
Maximum Service Temperature420°C
Chemical Composition
C
0.23 to 0.28%
CR
0.4 to 0.8%
NI
0.4 to 0.8%
MO
0.15 to 0.3%
MN
0.6 to 1.0%
SI
0 to 0.8%
P
0 to 0.030%
S
0 to 0.025%
CU
0 to 0.3%
V
0 to 0.030%
FE
95.6 to 98.2%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
21 %
Fatigue Strength
330 MPa
Impact Strength: V-Notched Charpy
30 J
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
710 MPa
Tensile Strength: Yield (Proof)
470 MPa
Hardness
Brinell Hardness
210
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
420 °C
Melting Completion (Liquidus)
1460 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
39 W/m-K
Thermal Diffusivity
10 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
21 points
Electrical
Electrical Conductivity: Equal Volume
7.5 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.6 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
130 MJ/m 3
Resilience: Unit (Modulus of Resilience)
600 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
25 points
Strength to Weight: Bending
23 points
Environmental
Base Metal Price
2.7 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
21 MJ/kg
Embodied Energy
21 MJ/kg 9.0 x 10 3 BTU/lb
Embodied Water
51 L/kg
Embodied Water
51 L/kg 6.1 gal/lb
Registered Designations & Aliases
1.6553EN 1.6553 (G25NiCrMo3) Cast SteelG25NiCrMo3
Standards
ISO 4991 ISO 4991: Steel castings for pressure purposes
ISO 4991 ISO 4991: Steel castings for pressure purposes Manufacture and Uses of Alloy Steels, Henry D. Hibbard, 2005