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SAE-AISI 8655 Steel vs. S32615 Stainless Steel

Both SAE-AISI 8655 steel and S32615 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 55% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8655 steel and the bottom bar is S32615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 23
28
Fatigue Strength, MPa 290
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 390
400
Tensile Strength: Ultimate (UTS), MPa 620
620
Tensile Strength: Yield (Proof), MPa 410
250

Thermal Properties

Latent Heat of Fusion, J/g 250
370
Maximum Temperature: Mechanical, °C 410
990
Melting Completion (Liquidus), °C 1460
1350
Melting Onset (Solidus), °C 1410
1310
Specific Heat Capacity, J/kg-K 470
500
Thermal Expansion, µm/m-K 13
15

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
24
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.5
4.4
Embodied Energy, MJ/kg 20
63
Embodied Water, L/kg 50
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
140
Resilience: Unit (Modulus of Resilience), kJ/m3 440
160
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22
23
Strength to Weight: Bending, points 21
21
Thermal Shock Resistance, points 18
15

Alloy Composition

Carbon (C), % 0.51 to 0.59
0 to 0.070
Chromium (Cr), % 0.4 to 0.6
16.5 to 19.5
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 96.4 to 97.6
46.4 to 57.9
Manganese (Mn), % 0.75 to 1.0
0 to 2.0
Molybdenum (Mo), % 0.15 to 0.25
0.3 to 1.5
Nickel (Ni), % 0.4 to 0.7
19 to 22
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0.15 to 0.35
4.8 to 6.0
Sulfur (S), % 0 to 0.040
0 to 0.030