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SAE-AISI 1021 Steel vs. SAE-AISI 1010 Steel

Both SAE-AISI 1021 steel and SAE-AISI 1010 steel are iron alloys. Their average alloy composition is basically identical.

For each property being compared, the top bar is SAE-AISI 1021 steel and the bottom bar is SAE-AISI 1010 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130 to 150
100 to 110
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 27
22 to 31
Fatigue Strength, MPa 190 to 300
150 to 230
Poisson's Ratio 0.29
0.29
Reduction in Area, % 46 to 54
46 to 56
Shear Modulus, GPa 73
73
Shear Strength, MPa 310 to 320
230 to 250
Tensile Strength: Ultimate (UTS), MPa 480 to 530
350 to 400
Tensile Strength: Yield (Proof), MPa 260 to 450
190 to 330

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1430
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
47
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
14

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
45

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
82 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 530
100 to 290
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 19
12 to 14
Strength to Weight: Bending, points 17 to 18
14 to 15
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 15 to 17
11 to 13

Alloy Composition

Carbon (C), % 0.18 to 0.23
0.080 to 0.13
Iron (Fe), % 98.8 to 99.22
99.18 to 99.62
Manganese (Mn), % 0.6 to 0.9
0.3 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Sulfur (S), % 0 to 0.050
0 to 0.050

Comparable Variants