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SAE-AISI 1046 Steel vs. ACI-ASTM CA40 Steel

Both SAE-AISI 1046 steel and ACI-ASTM CA40 steel are iron alloys. They have 86% 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 SAE-AISI 1046 steel and the bottom bar is ACI-ASTM CA40 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 210
310
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 14 to 17
10
Fatigue Strength, MPa 240 to 390
460
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 660 to 740
910
Tensile Strength: Yield (Proof), MPa 370 to 610
860

Thermal Properties

Latent Heat of Fusion, J/g 250
280
Maximum Temperature: Mechanical, °C 400
750
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1420
1500
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 51
25
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 11
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 12
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
7.5
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 1.4
2.0
Embodied Energy, MJ/kg 18
28
Embodied Water, L/kg 46
100

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 91 to 95
89
Resilience: Unit (Modulus of Resilience), kJ/m3 360 to 990
1910
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 23 to 26
33
Strength to Weight: Bending, points 22 to 23
27
Thermal Diffusivity, mm2/s 14
6.7
Thermal Shock Resistance, points 23 to 25
33

Alloy Composition

Carbon (C), % 0.43 to 0.5
0.2 to 0.4
Chromium (Cr), % 0
11.5 to 14
Iron (Fe), % 98.4 to 98.9
81.5 to 88.3
Manganese (Mn), % 0.7 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0
0 to 1.5
Sulfur (S), % 0 to 0.050
0 to 0.040