UNS S40945 Stainless Steel
Ferritic Stainless Steels
Property Overview
Density7.8g/cm³
Elastic Modulus190GPa
Tensile Strength430MPa
Yield Strength230MPa
Brinell Hardness160HB
Maximum Service Temperature710°C
Chemical Composition
C
0 to 0.030%
CR
10.5 to 11.7%
NI
0 to 0.5%
MN
0 to 1.0%
SI
0 to 1.0%
N
0 to 0.030%
P
0 to 0.040%
S
0 to 0.030%
NB
0.18 to 0.4%
TI
0.050 to 0.2%
FE
85.1 to 89.3%
Mechanical
Elastic (Young's, Tensile) Modulus
190 GPa
Elongation at Break
25 %
Fatigue Strength
160 MPa
Poisson's Ratio
0.28
Shear Modulus
75 GPa
Shear Strength
270 MPa
Tensile Strength: Ultimate (UTS)
430 MPa
Tensile Strength: Yield (Proof)
230 MPa
Hardness
Brinell Hardness
160
Rockwell B Hardness
69
Physical
Density
7.8 g/cm 3
Thermal
Latent Heat of Fusion
270 J/g
Maximum Temperature: Corrosion
450 °C
Maximum Temperature: Mechanical
710 °C
Melting Completion (Liquidus)
1450 °C
Melting Onset (Solidus)
1410 °C
Specific Heat Capacity
480 J/kg-K
Thermal Conductivity
26 W/m-K
Thermal Diffusivity
6.9 mm 2 /s
Thermal Expansion
10 µm/m-K
Thermal Shock Resistance
15 points
Electrical
Electrical Conductivity: Equal Volume
2.9 % IACS
Electrical Conductivity: Equal Weight (Specific)
3.3 % IACS
Calculated
PREN (Pitting Resistance)
11
Resilience: Ultimate (Unit Rupture Work)
89 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
15 points
Strength to Weight: Bending
16 points
Environmental
Base Metal Price
8.0 % relative
Embodied Carbon
2.2 kg CO 2 /kg material
Embodied Energy
31 MJ/kg
Embodied Energy
31 MJ/kg 13 x 10 3 BTU/lb
Embodied Water
94 L/kg
Embodied Water
94 L/kg 11 gal/lb
Registered Designations & Aliases
S40945UNS S40945 Stainless Steel
Standards
ASTM A240 ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
ASTM A240 ASTM A240: Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications Welding Metallurgy and Weldability of Stainless Steels, John C. Lippold and Damian J. Kotecki, 2005 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels Corrosion of Stainless Steels, A. John Sedriks, 1996
ASTM A959 ASTM A959: Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels