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SAE-AISI 52100 Steel vs. S40930 Stainless Steel

Both SAE-AISI 52100 steel and S40930 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 52100 steel and the bottom bar is S40930 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180 to 210
160
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10 to 20
23
Fatigue Strength, MPa 250 to 340
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
75
Shear Strength, MPa 370 to 420
270
Tensile Strength: Ultimate (UTS), MPa 590 to 2010
430
Tensile Strength: Yield (Proof), MPa 360 to 560
190

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 430
710
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 47
25
Thermal Expansion, µm/m-K 12 to 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
8.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 1.5
2.3
Embodied Energy, MJ/kg 20
32
Embodied Water, L/kg 51
94

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 54 to 310
80
Resilience: Unit (Modulus of Resilience), kJ/m3 350 to 840
94
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 21 to 72
16
Strength to Weight: Bending, points 20 to 45
16
Thermal Diffusivity, mm2/s 13
6.7
Thermal Shock Resistance, points 19 to 61
16

Alloy Composition

Carbon (C), % 0.93 to 1.1
0 to 0.030
Chromium (Cr), % 1.4 to 1.6
10.5 to 11.7
Iron (Fe), % 96.5 to 97.3
84.7 to 89.4
Manganese (Mn), % 0.25 to 0.45
0 to 1.0
Nickel (Ni), % 0
0 to 0.5
Niobium (Nb), % 0
0.080 to 0.75
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.020
Titanium (Ti), % 0
0.050 to 0.2