EN 1.7379 (G17CrMo9-10) Cast Steel
Other Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength670MPa
Yield Strength400MPa
Brinell Hardness200HB
Maximum Service Temperature460°C
Chemical Composition
C
0.13 to 0.2%
CR
2.0 to 2.5%
MO
0.9 to 1.2%
MN
0.5 to 0.9%
SI
0 to 0.6%
P
0 to 0.025%
S
0 to 0.030%
FE
94.5 to 96.5%
Mechanical
A - Min. elongation at fracture (%) (+QT)
18
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
21 %
Fatigue Strength
320 MPa
Impact Strength: V-Notched Charpy
45 J
KV - Impact energy (J) (+QT)
+20° 40
+QT
Poisson's Ratio
0.29
R p0.2 0.2% proof strength (MPa) (+QT)
400
+QT
Rm - Tensile strength (MPa) (+QT)
590-740
+QT
Shear Modulus
74 GPa
Tensile Strength: Ultimate (UTS)
670 MPa
Tensile Strength: Yield (Proof)
460 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
200
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
260 J/g
Maximum Temperature: Mechanical
460 °C
Melting Completion (Liquidus)
1470 °C
Melting Onset (Solidus)
1420 °C
Specific Heat Capacity
470 J/kg-K
Thermal Conductivity
39 W/m-K
Thermal Diffusivity
11 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
19 points
Electrical
Electrical Conductivity: Equal Volume
7.6 % IACS
Electrical Conductivity: Equal Weight (Specific)
8.8 % IACS
Calculated
PREN (Pitting Resistance)
5.7
Resilience: Ultimate (Unit Rupture Work)
120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
550 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
3.8 % relative
Embodied Carbon
1.8 kg CO 2 /kg material
Embodied Energy
23 MJ/kg
Embodied Energy
23 MJ/kg 10 x 10 3 BTU/lb
Embodied Water
59 L/kg
Embodied Water
59 L/kg 7.0 gal/lb
Registered Designations & Aliases
1.73791.7379EN 1.7379 (G17CrMo9-10) Cast SteelG17CrMo9-10G17CrMo9-10
Standards
EN 10213 EN 10213: 2007 Steel castings for pressure purposes
EN 10293 EN 10293: 2005 Steel castings for general engineering uses
EN 10293 EN 10293: Steel castings - Steel castings for general engineering uses
ISO 4991 ISO 4991: Steel castings for pressure purposes
ISO 4991 ISO 4991: Steel castings for pressure purposes EN 10293: Steel castings - Steel castings for general engineering uses Creep-Resistant Steels, Fujio Abe et al. (editors), 2008