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ASTM A266 Carbon Steel vs. Ductile Cast Iron

Both ASTM A266 carbon steel and ductile cast iron 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 ASTM A266 carbon steel and the bottom bar is ductile cast iron.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
160 to 310
Elastic (Young's, Tensile) Modulus, GPa 190
170 to 180
Elongation at Break, % 21 to 26
2.1 to 20
Poisson's Ratio 0.29
0.28 to 0.31
Shear Modulus, GPa 73
64 to 70
Shear Strength, MPa 320 to 380
420 to 800
Tensile Strength: Ultimate (UTS), MPa 500 to 600
460 to 920
Tensile Strength: Yield (Proof), MPa 230 to 290
310 to 670

Thermal Properties

Latent Heat of Fusion, J/g 250
270
Maximum Temperature: Mechanical, °C 400
290
Melting Completion (Liquidus), °C 1460
1160
Melting Onset (Solidus), °C 1420
1120
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 51 to 52
31 to 36
Thermal Expansion, µm/m-K 12
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.1
7.4
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1 to 8.2
8.8 to 9.4

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
1.9
Density, g/cm3 7.8
7.1 to 7.5
Embodied Carbon, kg CO2/kg material 1.4
1.5
Embodied Energy, MJ/kg 18 to 19
21
Embodied Water, L/kg 46 to 47
43

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
17 to 80
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 230
280 to 1330
Stiffness to Weight: Axial, points 13
12 to 14
Stiffness to Weight: Bending, points 24
24 to 26
Strength to Weight: Axial, points 18 to 21
17 to 35
Strength to Weight: Bending, points 18 to 20
18 to 29
Thermal Diffusivity, mm2/s 14
8.9 to 10
Thermal Shock Resistance, points 16 to 19
17 to 35

Comparable Variants