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ACI-ASTM CF20 Steel vs. ASTM A148 Cast Steel

Both ACI-ASTM CF20 steel and ASTM A148 cast steel are iron alloys. There are 30 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 ACI-ASTM CF20 steel and the bottom bar is ASTM A148 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
190 to 390
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
5.7 to 25
Fatigue Strength, MPa 240
280 to 670
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 530
630 to 1300
Tensile Strength: Yield (Proof), MPa 250
390 to 1160

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 970
400 to 430
Melting Completion (Liquidus), °C 1420
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
37 to 47
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.3 to 7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.3 to 8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
2.3 to 3.3
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
1.5 to 1.7
Embodied Energy, MJ/kg 44
20 to 22
Embodied Water, L/kg 150
48 to 53

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
71 to 150
Resilience: Unit (Modulus of Resilience), kJ/m3 160
400 to 3570
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
22 to 46
Strength to Weight: Bending, points 19
21 to 34
Thermal Diffusivity, mm2/s 4.3
9.9 to 13
Thermal Shock Resistance, points 11
18 to 38