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ACI-ASTM CD4MCu Steel vs. ACI-ASTM CF8 Steel

Both ACI-ASTM CD4MCu steel and ACI-ASTM CF8 steel are iron alloys. They have 89% of their average alloy composition in common. There are 31 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 CD4MCu steel and the bottom bar is ACI-ASTM CF8 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 18
55
Fatigue Strength, MPa 340
260
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 770
540
Tensile Strength: Yield (Proof), MPa 550
260

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1430
1420
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 17
16
Thermal Expansion, µm/m-K 13
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 18
16
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.5
3.1
Embodied Energy, MJ/kg 49
44
Embodied Water, L/kg 180
150

Common Calculations

PREN (Pitting Resistance) 32
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
240
Resilience: Unit (Modulus of Resilience), kJ/m3 760
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 28
19
Strength to Weight: Bending, points 24
19
Thermal Diffusivity, mm2/s 4.5
4.3
Thermal Shock Resistance, points 21
13

Alloy Composition

Carbon (C), % 0 to 0.040
0 to 0.080
Chromium (Cr), % 24.5 to 26.5
18 to 21
Copper (Cu), % 2.8 to 3.3
0
Iron (Fe), % 59.9 to 66.3
63.8 to 74
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 1.8 to 2.3
0 to 0.5
Nickel (Ni), % 4.8 to 6.0
8.0 to 11
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 2.0
Sulfur (S), % 0 to 0.040
0 to 0.040