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ACI-ASTM CA40F Steel vs. SAE-AISI 1045 Steel

Both ACI-ASTM CA40F steel and SAE-AISI 1045 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 ACI-ASTM CA40F steel and the bottom bar is SAE-AISI 1045 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180 to 190
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 13
13 to 18
Fatigue Strength, MPa 320
220 to 370
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Tensile Strength: Ultimate (UTS), MPa 770
620 to 680
Tensile Strength: Yield (Proof), MPa 550
330 to 580

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 750
400
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 27
51
Thermal Expansion, µm/m-K 10
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 3.0
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.5
8.1

Otherwise Unclassified Properties

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

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
84 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 790
300 to 900
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28
22 to 24
Strength to Weight: Bending, points 24
21 to 22
Thermal Diffusivity, mm2/s 7.2
14
Thermal Shock Resistance, points 28
20 to 22

Alloy Composition

Carbon (C), % 0.2 to 0.4
0.43 to 0.5
Chromium (Cr), % 11.5 to 14
0
Iron (Fe), % 81.6 to 88.3
98.5 to 99
Manganese (Mn), % 0 to 1.0
0.6 to 0.9
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0
Sulfur (S), % 0.2 to 0.4
0 to 0.050