ACI-ASTM CN7MS (J94650) Cast Stainless Steel
Austenitic & General Stainless Steels
Property Overview
Density7.9g/cm³
Elastic Modulus200GPa
Tensile Strength540MPa
Yield Strength230MPa
Brinell Hardness160HB
Maximum Service Temperature1040°C
Chemical Composition
C
0 to 0.070%
CR
18 to 20%
NI
22 to 25%
MO
2.5 to 3.0%
MN
0 to 1.0%
SI
2.5 to 3.5%
P
0 to 0.040%
S
0 to 0.030%
CU
1.5 to 2.0%
FE
45.4 to 53.5%
Mechanical
Elastic (Young's, Tensile) Modulus
200 GPa
Elongation at Break
39 %
Fatigue Strength
200 MPa
Poisson's Ratio
0.28
Shear Modulus
77 GPa
Tensile Strength: Ultimate (UTS)
540 MPa
Tensile Strength: Yield (Proof)
230 MPa
Hardness
Brinell Hardness
160
Physical
Density
7.9 g/cm 3
Thermal
Latent Heat of Fusion
340 J/g
Maximum Temperature: Corrosion
420 °C
Maximum Temperature: Mechanical
1040 °C
Melting Completion (Liquidus)
1400 °C
Melting Onset (Solidus)
1350 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
12 W/m-K
Thermal Diffusivity
3.2 mm 2 /s
Thermal Expansion
16 µm/m-K
Thermal Shock Resistance
13 points
Calculated
PREN (Pitting Resistance)
28
Resilience: Ultimate (Unit Rupture Work)
170 MJ/m 3
Resilience: Unit (Modulus of Resilience)
140 kJ/m 3
Stiffness to Weight: Axial
14 points
Stiffness to Weight: Bending
25 points
Strength to Weight: Axial
19 points
Strength to Weight: Bending
19 points
Environmental
Base Metal Price
28 % relative
Embodied Carbon
5.1 kg CO 2 /kg material
Embodied Energy
71 MJ/kg
Embodied Energy
71 MJ/kg 31 x 10 3 BTU/lb
Embodied Water
180 L/kg
Embodied Water
180 L/kg 22 gal/lb
Registered Designations & Aliases
ACI-ASTM CN7MS (J94650) Cast Stainless SteelJ94650
Standards
ASTM A743 ASTM A743: Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application
ASTM A743 ASTM A743: Standard Specification for Castings, Iron-Chromium, Iron-Chromium-Nickel, Corrosion Resistant, for General Application Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005