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ACI-ASTM CF20 Steel vs. ASTM A414 Steel

Both ACI-ASTM CF20 steel and ASTM A414 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 A414 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
110 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 50
15 to 26
Fatigue Strength, MPa 240
140 to 260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 530
360 to 590
Tensile Strength: Yield (Proof), MPa 250
190 to 350

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 970
400
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
49 to 50
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.2 to 7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.3 to 8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 16
2.2
Density, g/cm3 7.8
7.8 to 7.9
Embodied Carbon, kg CO2/kg material 3.1
1.5 to 1.6
Embodied Energy, MJ/kg 44
20 to 22
Embodied Water, L/kg 150
48

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
69 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 160
100 to 330
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
13 to 21
Strength to Weight: Bending, points 19
14 to 20
Thermal Diffusivity, mm2/s 4.3
13
Thermal Shock Resistance, points 11
11 to 17