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SAE-AISI 6150 Steel vs. S32550 Stainless Steel

Both SAE-AISI 6150 steel and S32550 stainless steel are iron alloys. They have 64% 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 6150 steel and the bottom bar is S32550 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 350
260
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 15 to 23
21
Fatigue Strength, MPa 300 to 750
400
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
80
Shear Strength, MPa 400 to 730
540
Tensile Strength: Ultimate (UTS), MPa 630 to 1200
860
Tensile Strength: Yield (Proof), MPa 420 to 1160
620

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 420
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 46
16
Thermal Expansion, µm/m-K 12 to 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.0
3.8
Embodied Energy, MJ/kg 28
53
Embodied Water, L/kg 51
180

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
160
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3590
940
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 22 to 43
31
Strength to Weight: Bending, points 21 to 32
26
Thermal Diffusivity, mm2/s 13
4.4
Thermal Shock Resistance, points 20 to 38
23

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.040
Chromium (Cr), % 0.8 to 1.1
24 to 27
Copper (Cu), % 0
1.5 to 2.5
Iron (Fe), % 96.7 to 97.7
57.2 to 67
Manganese (Mn), % 0.7 to 0.9
0 to 1.5
Molybdenum (Mo), % 0
2.9 to 3.9
Nickel (Ni), % 0
4.5 to 6.5
Nitrogen (N), % 0
0.1 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Vanadium (V), % 0.15 to 0.3
0