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SAE-AISI 5140 Steel vs. S41041 Stainless Steel

Both SAE-AISI 5140 steel and S41041 stainless steel are iron alloys. They have 88% 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 5140 steel and the bottom bar is S41041 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 170 to 290
240
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 12 to 29
17
Fatigue Strength, MPa 220 to 570
350
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 360 to 600
560
Tensile Strength: Ultimate (UTS), MPa 560 to 970
910
Tensile Strength: Yield (Proof), MPa 290 to 840
580

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 420
740
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
29
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.4
2.2
Embodied Energy, MJ/kg 19
31
Embodied Water, L/kg 49
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 76 to 180
140
Resilience: Unit (Modulus of Resilience), kJ/m3 220 to 1880
860
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 20 to 34
32
Strength to Weight: Bending, points 19 to 28
27
Thermal Diffusivity, mm2/s 12
7.8
Thermal Shock Resistance, points 16 to 29
33

Alloy Composition

Aluminum (Al), % 0
0 to 0.050
Carbon (C), % 0.38 to 0.43
0.13 to 0.18
Chromium (Cr), % 0.7 to 0.9
11.5 to 13
Iron (Fe), % 97.3 to 98.1
84.5 to 87.8
Manganese (Mn), % 0.7 to 0.9
0.4 to 0.6
Molybdenum (Mo), % 0
0 to 0.2
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.15 to 0.45
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.030