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S32050 Stainless Steel vs. SAE-AISI 8660 Steel

Both S32050 stainless steel and SAE-AISI 8660 steel are iron alloys. They have 50% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is S32050 stainless steel and the bottom bar is SAE-AISI 8660 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
200
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 46
12
Fatigue Strength, MPa 340
340
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 540
390
Tensile Strength: Ultimate (UTS), MPa 770
660
Tensile Strength: Yield (Proof), MPa 370
550

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
410
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 12
39
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 31
2.6
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 6.0
1.5
Embodied Energy, MJ/kg 81
20
Embodied Water, L/kg 210
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 290
73
Resilience: Unit (Modulus of Resilience), kJ/m3 330
800
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 27
23
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 3.3
10
Thermal Shock Resistance, points 17
19

Alloy Composition

Carbon (C), % 0 to 0.030
0.56 to 0.64
Chromium (Cr), % 22 to 24
0.4 to 0.6
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 43.1 to 51.8
96.4 to 97.6
Manganese (Mn), % 0 to 1.5
0.75 to 1.0
Molybdenum (Mo), % 6.0 to 6.6
0.15 to 0.25
Nickel (Ni), % 20 to 23
0.4 to 0.7
Nitrogen (N), % 0.21 to 0.32
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0.15 to 0.35
Sulfur (S), % 0 to 0.020
0 to 0.040