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S40975 Stainless Steel vs. SAE-AISI 1146 Steel

Both S40975 stainless steel and SAE-AISI 1146 steel are iron alloys. They have 87% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S40975 stainless steel and the bottom bar is SAE-AISI 1146 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170
190 to 200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 22
13 to 17
Fatigue Strength, MPa 210
240 to 400
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
72
Shear Strength, MPa 290
410 to 440
Tensile Strength: Ultimate (UTS), MPa 460
670 to 730
Tensile Strength: Yield (Proof), MPa 310
360 to 630

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Maximum Temperature: Mechanical, °C 710
400
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1400
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 26
51
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.4
Embodied Energy, MJ/kg 28
18
Embodied Water, L/kg 95
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
93 to 97
Resilience: Unit (Modulus of Resilience), kJ/m3 250
340 to 1050
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 17
24 to 26
Strength to Weight: Bending, points 17
22 to 23
Thermal Diffusivity, mm2/s 7.0
14
Thermal Shock Resistance, points 17
20 to 22

Alloy Composition

Carbon (C), % 0 to 0.030
0.42 to 0.49
Chromium (Cr), % 10.5 to 11.7
0
Iron (Fe), % 84.4 to 89
98.3 to 98.8
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Nickel (Ni), % 0.5 to 1.0
0
Nitrogen (N), % 0 to 0.030
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0.080 to 0.13
Titanium (Ti), % 0 to 0.75
0