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ASTM A387 Grade 2 Steel vs. ACI-ASTM CB6 Steel

Both ASTM A387 grade 2 steel and ACI-ASTM CB6 steel are iron alloys. They have 79% of their average alloy composition in common. 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 A387 grade 2 steel and the bottom bar is ACI-ASTM CB6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 25
18
Fatigue Strength, MPa 190 to 250
410
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
77
Tensile Strength: Ultimate (UTS), MPa 470 to 550
880
Tensile Strength: Yield (Proof), MPa 260 to 350
660

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 420
870
Melting Completion (Liquidus), °C 1470
1440
Melting Onset (Solidus), °C 1420
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 45
17
Thermal Expansion, µm/m-K 13
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 2.6
12
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 1.6
2.5
Embodied Energy, MJ/kg 20
36
Embodied Water, L/kg 50
130

Common Calculations

PREN (Pitting Resistance) 2.4
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 98 to 120
150
Resilience: Unit (Modulus of Resilience), kJ/m3 180 to 320
1110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 16 to 20
32
Strength to Weight: Bending, points 17 to 19
26
Thermal Diffusivity, mm2/s 12
4.6
Thermal Shock Resistance, points 14 to 16
31

Alloy Composition

Carbon (C), % 0.050 to 0.21
0 to 0.060
Chromium (Cr), % 0.5 to 0.8
15.5 to 17.5
Iron (Fe), % 97.1 to 98.3
74.4 to 81
Manganese (Mn), % 0.55 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.45 to 0.6
0 to 0.5
Nickel (Ni), % 0
3.5 to 5.5
Phosphorus (P), % 0 to 0.025
0 to 0.040
Silicon (Si), % 0.15 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.030