EN 1.7221 (G26CrMo4) Cast Steel
Other Steels
quenched and tempered
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength650MPa
Yield Strength430MPa
Brinell Hardness200HB
Maximum Service Temperature420°C
Chemical Composition
C
0.22 to 0.29%
CR
0.8 to 1.2%
MO
0.15 to 0.3%
MN
0.5 to 0.8%
SI
0 to 0.6%
P
0 to 0.025%
S
0 to 0.030%
FE
96.8 to 98.3%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
17 %
Fatigue Strength
290 MPa
Impact Strength: V-Notched Charpy
38 J
Poisson's Ratio
0.29
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
650 MPa
Tensile Strength: Yield (Proof)
430 MPa
Hardness
Brinell Hardness
200
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
44 W/m-K
Thermal Diffusivity
12 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
19 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
98 MJ/m 3
Resilience: Unit (Modulus of Resilience)
490 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
23 points
Strength to Weight: Bending
21 points
Environmental
Base Metal Price
2.4 % relative
Embodied Carbon
1.5 kg CO 2 /kg material
Embodied Energy
20 MJ/kg
Embodied Energy
20 MJ/kg 8.5 x 10 3 BTU/lb
Embodied Water
51 L/kg
Embodied Water
51 L/kg 6.1 gal/lb
Registered Designations & Aliases
1.72211.7221EN 1.7221 (G26CrMo4) Cast SteelG26CrMo4G26CrMo4
Standards
EN 10293 EN 10293: 2005 Steel castings for general engineering uses
EN 10293 EN 10293: Steel castings - Steel castings for general engineering uses