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SAE-AISI 1021 Steel vs. ASTM A27 Cast Steel

Both SAE-AISI 1021 steel and ASTM A27 cast steel are iron alloys. There are 30 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 SAE-AISI 1021 steel and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17 to 27
25 to 27
Fatigue Strength, MPa 190 to 300
170 to 230
Poisson's Ratio 0.29
0.29
Reduction in Area, % 46 to 54
34 to 40
Shear Modulus, GPa 73
73
Tensile Strength: Ultimate (UTS), MPa 480 to 530
460 to 550
Tensile Strength: Yield (Proof), MPa 260 to 450
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 400
400
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
52
Thermal Expansion, µm/m-K 12
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.4
1.4
Embodied Energy, MJ/kg 18
18
Embodied Water, L/kg 46
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 530
140 to 260
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 17 to 19
16 to 20
Strength to Weight: Bending, points 17 to 18
17 to 19
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 15 to 17
15 to 18