ACI-ASTM CB7Cu-1 (J92180) Cast Stainless Steel
Precipitation-Hardening Stainless Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength960 to 1350MPa
Yield Strength760 to 1180MPa
Brinell Hardness300 to 420HB
Maximum Service TemperatureUnknown
Chemical Composition
C
0 to 0.070%
CR
15.5 to 17.7%
NI
3.6 to 4.6%
MN
0 to 0.7%
SI
0 to 1.0%
N
0 to 0.050%
P
0 to 0.035%
S
0 to 0.030%
CU
2.5 to 3.2%
NB
0 to 0.35%
FE
72.3 to 78.4%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
5.7 to 11 %
Fatigue Strength
420 to 590 MPa
Impact Strength: V-Notched Charpy
34 J
Poisson's Ratio
0.28
Shear Modulus
76 GPa
Tensile Strength: Ultimate (UTS)
960 to 1350 MPa
Tensile Strength: Yield (Proof)
760 to 1180 MPa
Hardness
Brinell Hardness
300 to 420
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
280 J/g
Melting Completion (Liquidus)
1430 °C
Melting Onset (Solidus)
1500 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
17 W/m-K
Thermal Diffusivity
4.6 mm 2 /s
Thermal Expansion
11 µm/m-K
Thermal Shock Resistance
32 to 45 points
Electrical
Electrical Conductivity: Equal Volume
2.0 % IACS
Electrical Conductivity: Equal Weight (Specific)
2.3 % IACS
Calculated
PREN (Pitting Resistance)
17
Resilience: Ultimate (Unit Rupture Work)
71 to 120 MJ/m 3
Resilience: Unit (Modulus of Resilience)
1500 to 3590 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
34 to 48 points
Strength to Weight: Bending
28 to 35 points
Environmental
Base Metal Price
13 % relative
Embodied Carbon
2.6 kg CO 2 /kg material
Embodied Energy
38 MJ/kg
Embodied Energy
38 MJ/kg 16 x 10 3 BTU/lb
Embodied Water
130 L/kg
Embodied Water
130 L/kg 16 gal/lb
Registered Designations & Aliases
ACI-ASTM CB7Cu-1 (J92180) Cast Stainless SteelJ92180
Standards
ASTM A747 ASTM A747: Standard Specification for Steel Castings, Stainless, Precipitation Hardening
ASTM A747 ASTM A747: Standard Specification for Steel Castings, Stainless, Precipitation Hardening Machining of Stainless Steels and Super Alloys: Traditional and Nontraditional Techniques, Helmi A. Youssef, 2016 Welding Metallurgy of Stainless Steels, Erich Folkhard et al., 2012 Corrosion of Stainless Steels, A. John Sedriks, 1996