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S31727 Stainless Steel vs. SAE-AISI 1020 Steel

Both S31727 stainless steel and SAE-AISI 1020 steel are iron alloys. They have 58% of their average alloy composition in common. There are 28 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 S31727 stainless steel and the bottom bar is SAE-AISI 1020 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
120 to 130
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 40
17 to 28
Fatigue Strength, MPa 240
180 to 250
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
45 to 57
Shear Modulus, GPa 78
73
Shear Strength, MPa 430
280
Tensile Strength: Ultimate (UTS), MPa 630
430 to 460
Tensile Strength: Yield (Proof), MPa 270
240 to 380

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1010
400
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 24
1.8
Density, g/cm3 8.0
7.9
Embodied Carbon, kg CO2/kg material 4.7
1.4
Embodied Energy, MJ/kg 64
18
Embodied Water, L/kg 180
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
72 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 190
150 to 380
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 22
15 to 16
Strength to Weight: Bending, points 20
16 to 17
Thermal Shock Resistance, points 14
13 to 14

Alloy Composition

Carbon (C), % 0 to 0.030
0.18 to 0.23
Chromium (Cr), % 17.5 to 19
0
Copper (Cu), % 2.8 to 4.0
0
Iron (Fe), % 53.7 to 61.3
99.08 to 99.52
Manganese (Mn), % 0 to 1.0
0.3 to 0.6
Molybdenum (Mo), % 3.8 to 4.5
0
Nickel (Ni), % 14.5 to 16.5
0
Nitrogen (N), % 0.15 to 0.21
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0 to 0.050