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ASTM A387 Grade 11 Steel vs. ACI-ASTM CG8M Steel

Both ASTM A387 grade 11 steel and ACI-ASTM CG8M steel are iron alloys. They have 67% of their average alloy composition in common. There are 31 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 A387 grade 11 steel and the bottom bar is ACI-ASTM CG8M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
180
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
45
Fatigue Strength, MPa 200 to 250
280
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 500 to 600
550
Tensile Strength: Yield (Proof), MPa 270 to 350
300

Thermal Properties

Latent Heat of Fusion, J/g 260
300
Maximum Temperature: Mechanical, °C 430
1020
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1420
1400
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
16
Thermal Expansion, µm/m-K 13
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.9
20
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.6
4.1
Embodied Energy, MJ/kg 21
56
Embodied Water, L/kg 53
160

Common Calculations

PREN (Pitting Resistance) 3.1
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100 to 130
210
Resilience: Unit (Modulus of Resilience), kJ/m3 200 to 320
220
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 18 to 21
19
Strength to Weight: Bending, points 18 to 20
19
Thermal Diffusivity, mm2/s 11
4.3
Thermal Shock Resistance, points 15 to 18
12

Alloy Composition

Carbon (C), % 0.050 to 0.17
0 to 0.080
Chromium (Cr), % 1.0 to 1.5
18 to 21
Iron (Fe), % 96.2 to 97.6
58.8 to 70
Manganese (Mn), % 0.4 to 0.65
0 to 1.5
Molybdenum (Mo), % 0.45 to 0.65
3.0 to 4.0
Nickel (Ni), % 0
9.0 to 13
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.5 to 0.8
0 to 1.5
Sulfur (S), % 0 to 0.025
0 to 0.040