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SAE-AISI 6150 Steel vs. S20161 Stainless Steel

Both SAE-AISI 6150 steel and S20161 stainless steel are iron alloys. They have 72% 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 S20161 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 200 to 350
250
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 15 to 23
46
Fatigue Strength, MPa 300 to 750
360
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
76
Shear Strength, MPa 400 to 730
690
Tensile Strength: Ultimate (UTS), MPa 630 to 1200
980
Tensile Strength: Yield (Proof), MPa 420 to 1160
390

Thermal Properties

Latent Heat of Fusion, J/g 250
330
Maximum Temperature: Mechanical, °C 420
870
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1410
1330
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 46
15
Thermal Expansion, µm/m-K 12 to 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
12
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.0
2.7
Embodied Energy, MJ/kg 28
39
Embodied Water, L/kg 51
130

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 180
360
Resilience: Unit (Modulus of Resilience), kJ/m3 460 to 3590
390
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
26
Strength to Weight: Axial, points 22 to 43
36
Strength to Weight: Bending, points 21 to 32
29
Thermal Diffusivity, mm2/s 13
4.0
Thermal Shock Resistance, points 20 to 38
22

Alloy Composition

Carbon (C), % 0.48 to 0.53
0 to 0.15
Chromium (Cr), % 0.8 to 1.1
15 to 18
Iron (Fe), % 96.7 to 97.7
65.6 to 73.9
Manganese (Mn), % 0.7 to 0.9
4.0 to 6.0
Nickel (Ni), % 0
4.0 to 6.0
Nitrogen (N), % 0
0.080 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.15 to 0.35
3.0 to 4.0
Sulfur (S), % 0 to 0.040
0 to 0.040
Vanadium (V), % 0.15 to 0.3
0