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SAE-AISI 1095 Steel vs. S40975 Stainless Steel

Both SAE-AISI 1095 steel and S40975 stainless 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 SAE-AISI 1095 steel and the bottom bar is S40975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 270
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10 to 11
22
Fatigue Strength, MPa 310 to 370
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Shear Strength, MPa 400 to 540
290
Tensile Strength: Ultimate (UTS), MPa 680 to 900
460
Tensile Strength: Yield (Proof), MPa 500 to 590
310

Thermal Properties

Latent Heat of Fusion, J/g 240
270
Maximum Temperature: Mechanical, °C 400
710
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 47
26
Thermal Expansion, µm/m-K 12
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 9.6
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 11
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 19
28
Embodied Water, L/kg 45
95

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 63 to 84
93
Resilience: Unit (Modulus of Resilience), kJ/m3 660 to 930
250
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24 to 32
17
Strength to Weight: Bending, points 22 to 26
17
Thermal Diffusivity, mm2/s 13
7.0
Thermal Shock Resistance, points 22 to 29
17

Alloy Composition

Carbon (C), % 0.9 to 1.0
0 to 0.030
Chromium (Cr), % 0
10.5 to 11.7
Iron (Fe), % 98.4 to 98.8
84.4 to 89
Manganese (Mn), % 0.3 to 0.5
0 to 1.0
Nickel (Ni), % 0
0.5 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030
Titanium (Ti), % 0
0 to 0.75