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ACI-ASTM CA40F Steel vs. ACI-ASTM CA15M Steel

Both ACI-ASTM CA40F steel and ACI-ASTM CA15M steel are iron alloys. Both are furnished in the heat treated (HT) condition. Their average alloy composition is basically identical. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA40F steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
210
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 13
20
Fatigue Strength, MPa 320
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 770
690
Tensile Strength: Yield (Proof), MPa 550
510

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 750
760
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 27
27
Thermal Expansion, µm/m-K 10
10

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
7.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.0
2.1
Embodied Energy, MJ/kg 28
29
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 14
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 94
130
Resilience: Unit (Modulus of Resilience), kJ/m3 790
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
25
Strength to Weight: Bending, points 24
22
Thermal Diffusivity, mm2/s 7.2
7.2
Thermal Shock Resistance, points 28
25

Alloy Composition

Carbon (C), % 0.2 to 0.4
0 to 0.15
Chromium (Cr), % 11.5 to 14
11.5 to 14
Iron (Fe), % 81.6 to 88.3
82.1 to 88.4
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.15 to 1.0
Nickel (Ni), % 0 to 1.0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.5
0 to 0.65
Sulfur (S), % 0.2 to 0.4
0 to 0.040