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ACI-ASTM CA40 Steel vs. ASTM A372 Grade L Steel

Both ACI-ASTM CA40 steel and ASTM A372 grade L steel are iron alloys. They have 88% of their average alloy composition in common. 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 ACI-ASTM CA40 steel and the bottom bar is ASTM A372 grade L steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
350
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 10
14
Fatigue Strength, MPa 460
670
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
73
Tensile Strength: Ultimate (UTS), MPa 910
1160
Tensile Strength: Yield (Proof), MPa 860
1040

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 750
430
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
44
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
8.6

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
3.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
1.7
Embodied Energy, MJ/kg 28
22
Embodied Water, L/kg 100
54

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 89
150
Resilience: Unit (Modulus of Resilience), kJ/m3 1910
2890
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 33
41
Strength to Weight: Bending, points 27
31
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 33
34

Alloy Composition

Carbon (C), % 0.2 to 0.4
0.38 to 0.43
Chromium (Cr), % 11.5 to 14
0.7 to 0.9
Iron (Fe), % 81.5 to 88.3
95.2 to 96.3
Manganese (Mn), % 0 to 1.0
0.6 to 0.8
Molybdenum (Mo), % 0 to 0.5
0.2 to 0.3
Nickel (Ni), % 0 to 1.0
1.7 to 2.0
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 1.5
0.15 to 0.35
Sulfur (S), % 0 to 0.040
0 to 0.010