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Hot Rolled SAE-AISI 1020 vs. ASTM A36 Carbon Steel

Both hot rolled SAE-AISI 1020 and ASTM A36 carbon steel are iron alloys. Their average alloy composition is basically identical. There are 28 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is hot rolled SAE-AISI 1020 and the bottom bar is ASTM A36 carbon steel.

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 28
22
Fatigue Strength, MPa 180
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 280
300
Tensile Strength: Ultimate (UTS), MPa 430
480
Tensile Strength: Yield (Proof), MPa 240
290

Thermal Properties

Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 52
50
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
12
Electrical Conductivity: Equal Weight (Specific), % IACS 12
14

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.7
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 45
44

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
92
Resilience: Unit (Modulus of Resilience), kJ/m3 150
220
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 15
17
Strength to Weight: Bending, points 16
17
Thermal Diffusivity, m2/s 14
14
Thermal Shock Resistance, points 13
16

Alloy Composition

Carbon (C), % 0.18 to 0.23
0 to 0.26
Iron (Fe), % 99.08 to 99.52
99.25 to 100
Manganese (Mn), % 0.3 to 0.6
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 0.4
Sulfur (S), % 0 to 0.050
0 to 0.050