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SAE-AISI 1021 Steel vs. AISI 310S Stainless Steel

Both SAE-AISI 1021 steel and AISI 310S stainless steel are iron alloys. They have 53% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1021 steel and the bottom bar is AISI 310S stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 150
170 to 210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17 to 27
34 to 44
Fatigue Strength, MPa 190 to 300
250 to 280
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 73
79
Shear Strength, MPa 310 to 320
420 to 470
Tensile Strength: Ultimate (UTS), MPa 480 to 530
600 to 710
Tensile Strength: Yield (Proof), MPa 260 to 450
270 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
310
Maximum Temperature: Mechanical, °C 400
1100
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 52
16
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
25
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
4.3
Embodied Energy, MJ/kg 18
61
Embodied Water, L/kg 46
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
200 to 220
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 530
190 to 310
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 17 to 19
21 to 25
Strength to Weight: Bending, points 17 to 18
20 to 22
Thermal Diffusivity, mm2/s 14
4.1
Thermal Shock Resistance, points 15 to 17
14 to 16

Alloy Composition

Carbon (C), % 0.18 to 0.23
0 to 0.080
Chromium (Cr), % 0
24 to 26
Iron (Fe), % 98.8 to 99.22
48.3 to 57
Manganese (Mn), % 0.6 to 0.9
0 to 2.0
Nickel (Ni), % 0
19 to 22
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0 to 0.050
0 to 0.030

Comparable Variants