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ACI-ASTM CK20 Steel vs. ASTM A27 Cast Steel

Both ACI-ASTM CK20 steel and ASTM A27 cast steel are iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK20 steel and the bottom bar is ASTM A27 cast steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 37
25 to 27
Fatigue Strength, MPa 220
170 to 230
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 78
73
Tensile Strength: Ultimate (UTS), MPa 530
460 to 550
Tensile Strength: Yield (Proof), MPa 260
230 to 310

Thermal Properties

Latent Heat of Fusion, J/g 310
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1400
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 14
52
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
7.0 to 7.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
8.1

Otherwise Unclassified Properties

Base Metal Price, % relative 25
1.8
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.4
1.4
Embodied Energy, MJ/kg 62
18
Embodied Water, L/kg 190
45 to 46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 160
96 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 170
140 to 260
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
16 to 20
Strength to Weight: Bending, points 19
17 to 19
Thermal Diffusivity, mm2/s 3.7
14
Thermal Shock Resistance, points 13
15 to 18