EN 1.5681 (GX9Ni5) Cast Steel
Other Steels
Property Overview
Density7.9g/cm³
Elastic Modulus190GPa
Tensile Strength630MPa
Yield Strength380MPa
Brinell Hardness190HB
Maximum Service Temperature420°C
Chemical Composition
C
0.060 to 0.12%
NI
4.5 to 5.5%
MN
0.5 to 0.8%
SI
0 to 0.6%
P
0 to 0.020%
S
0 to 0.020%
FE
92.9 to 94.9%
Mechanical
A - Min. elongation at fracture (%) (+QT)
18
+QT
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
20 %
Fatigue Strength
300 MPa
Impact Strength: V-Notched Charpy
110 J
KV - Impact energy (J) (+QT)
+20° 100
+QT
KV - Impact energy (J) (+QT)
-100° 27
+QT
Poisson's Ratio
0.29
R p0.2 0.2% proof strength (MPa) (+QT)
380
+QT
Rm - Tensile strength (MPa) (+QT)
550-700
+QT
Shear Modulus
73 GPa
Tensile Strength: Ultimate (UTS)
630 MPa
Tensile Strength: Yield (Proof)
430 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
190
Physical
Density
7.9 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
48 W/m-K
Thermal Diffusivity
13 mm 2 /s
Thermal Expansion
13 µm/m-K
Thermal Shock Resistance
19 points
Electrical
Electrical Conductivity: Equal Volume
7.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
9.0 % IACS
Calculated
Resilience: Ultimate (Unit Rupture Work)
110 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
22 points
Strength to Weight: Bending
21 points
Environmental
Base Metal Price
5.0 % relative
Embodied Carbon
1.9 kg CO 2 /kg material
Embodied Energy
25 MJ/kg
Embodied Energy
25 MJ/kg 11 x 10 3 BTU/lb
Embodied Water
55 L/kg
Embodied Water
55 L/kg 6.6 gal/lb
Registered Designations & Aliases
1.56811.5681EN 1.5681 (GX9Ni5) Cast SteelGX9Ni5GX9Ni5
Standards
EN 10293 EN 10293: 2005 Steel castings for general engineering uses
EN 10293 EN 10293: Steel castings - Steel castings for general engineering uses