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ACI-ASTM CF8C Steel vs. ACI-ASTM CA15M Steel

Both ACI-ASTM CF8C steel and ACI-ASTM CA15M steel are iron alloys. Both are furnished in the heat treated (HT) condition. They have 82% of their average alloy composition in common. 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 CF8C steel and the bottom bar is ACI-ASTM CA15M steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150
210
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
20
Fatigue Strength, MPa 220
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 530
690
Tensile Strength: Yield (Proof), MPa 260
510

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 490
390
Maximum Temperature: Mechanical, °C 980
760
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1430
1410
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
27
Thermal Expansion, µm/m-K 17
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.5

Otherwise Unclassified Properties

Base Metal Price, % relative 19
7.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.7
2.1
Embodied Energy, MJ/kg 53
29
Embodied Water, L/kg 150
100

Common Calculations

PREN (Pitting Resistance) 20
15
Resilience: Ultimate (Unit Rupture Work), MJ/m3 180
130
Resilience: Unit (Modulus of Resilience), kJ/m3 170
670
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
25
Strength to Weight: Bending, points 19
22
Thermal Diffusivity, mm2/s 4.3
7.2
Thermal Shock Resistance, points 11
25

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.15
Chromium (Cr), % 18 to 21
11.5 to 14
Iron (Fe), % 61.8 to 73
82.1 to 88.4
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0.15 to 1.0
Nickel (Ni), % 9.0 to 12
0 to 1.0
Niobium (Nb), % 0 to 1.0
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 0.65
Sulfur (S), % 0 to 0.040
0 to 0.040