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SAE-AISI 5120 Steel vs. S30615 Stainless Steel

Both SAE-AISI 5120 steel and S30615 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 63% of their average alloy composition in common. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 5120 steel and the bottom bar is S30615 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 16
39
Fatigue Strength, MPa 210
270
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
75
Shear Strength, MPa 310
470
Tensile Strength: Ultimate (UTS), MPa 500
690
Tensile Strength: Yield (Proof), MPa 320
310

Thermal Properties

Latent Heat of Fusion, J/g 250
340
Maximum Temperature: Mechanical, °C 420
960
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1420
1320
Specific Heat Capacity, J/kg-K 470
500
Thermal Conductivity, W/m-K 47
14
Thermal Expansion, µm/m-K 12
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.1
19
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.4
3.7
Embodied Energy, MJ/kg 19
53
Embodied Water, L/kg 49
170

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 71
220
Resilience: Unit (Modulus of Resilience), kJ/m3 280
260
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18
25
Strength to Weight: Bending, points 18
23
Thermal Diffusivity, mm2/s 13
3.7
Thermal Shock Resistance, points 16
16

Alloy Composition

Aluminum (Al), % 0
0.8 to 1.5
Carbon (C), % 0.17 to 0.22
0.16 to 0.24
Chromium (Cr), % 0.7 to 0.9
17 to 19.5
Iron (Fe), % 97.6 to 98.3
56.7 to 65.3
Manganese (Mn), % 0.7 to 0.9
0 to 2.0
Nickel (Ni), % 0
13.5 to 16
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0.15 to 0.35
3.2 to 4.0
Sulfur (S), % 0 to 0.040
0 to 0.030