EN 1.5422 (G18Mo5) Cast Steel
Other Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength520MPa
Yield Strength240MPa
Brinell Hardness150HB
Maximum Service Temperature410°C
Chemical Composition
C
0.15 to 0.2%
CR
0 to 0.3%
NI
0 to 0.4%
MO
0.45 to 0.65%
MN
0.8 to 1.2%
SI
0 to 0.6%
P
0 to 0.020%
S
0 to 0.020%
CU
0 to 0.3%
V
0 to 0.050%
FE
96.3 to 98.6%
Mechanical
A - Min. elongation at fracture (%) (+QT)
23
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
26 %
Fatigue Strength
200 MPa
KV - Impact energy (J) (+QT)
-45° 27
+QT
Poisson's Ratio
0.29
R p0.2 0.2% proof strength (MPa) (+QT)
240
+QT
Rm - Tensile strength (MPa) (+QT)
440-790
+QT
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
520 MPa
Tensile Strength: Yield (Proof)
270 MPa
Hardness
+A Soft annealed +AC Annealed to achieve spheroidization of the carbides +AR As rolled +AT Solution annealed +C Cold drawn / hard +CR Cold rolled +FP Treated to ferrite-pearlite structure and hardness range +I Isothermal annealing +LC Cold drawn / soft +M Thermo mechanical rolling +N Normalized +NT Normalized and tempered
+P Precipitation hardened +PE Peeled +QA Air quenched and tempered +QL Liquid quenched and tempered +QT Quenched and tempered +S Treated to improve shearability +SH As rolled and turned +SR Cold drawn and stress relieved +T Tempered +TH Treated to hardness range +WW Warm worked +U Untreated
+A
Brinell Hardness
150
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
250 J/g
Maximum Temperature: Mechanical
410 °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
15 points
Electrical
Electrical Conductivity: Equal Volume
7.3 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.4 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
110 MJ/m 3
Resilience: Unit (Modulus of Resilience)
200 kJ/m 3
Stiffness to Weight: Axial
13 points
Stiffness to Weight: Bending
24 points
Strength to Weight: Axial
18 points
Strength to Weight: Bending
18 points
Environmental
Base Metal Price
2.7 % relative
Embodied Carbon
1.6 kg CO 2 /kg material
Embodied Energy
22 MJ/kg
Embodied Energy
22 MJ/kg 9.3 x 10 3 BTU/lb
Embodied Water
50 L/kg
Embodied Water
50 L/kg 5.9 gal/lb
Registered Designations & Aliases
1.54221.5422EN 1.5422 (G18Mo5) Cast SteelG18Mo5G18Mo5
Standards
EN 10213 EN 10213: 2007 Steel castings for pressure purposes
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