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ASTM A285 Carbon Steel vs. ACI-ASTM CG8M Steel

Both ASTM A285 carbon steel and ACI-ASTM CG8M steel are iron alloys. There are 30 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 ASTM A285 carbon steel and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 110 to 130
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 30 to 34
45
Fatigue Strength, MPa 150 to 180
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 380 to 450
550
Tensile Strength: Yield (Proof), MPa 190 to 230
300

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 400
1020
Melting Completion (Liquidus), °C 1470
1450
Melting Onset (Solidus), °C 1420 to 1430
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 53
16
Thermal Expansion, µm/m-K 12
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
20
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.4
4.1
Embodied Energy, MJ/kg 18
56
Embodied Water, L/kg 46
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
210
Resilience: Unit (Modulus of Resilience), kJ/m3 94 to 150
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 13 to 16
19
Strength to Weight: Bending, points 15 to 17
19
Thermal Diffusivity, mm2/s 14
4.3
Thermal Shock Resistance, points 12 to 14
12