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ACI-ASTM CA6NM Steel vs. ACI-ASTM CD4MCu Steel

Both ACI-ASTM CA6NM steel and ACI-ASTM CD4MCu steel are iron alloys. They have 82% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CA6NM steel and the bottom bar is ACI-ASTM CD4MCu steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
18
Fatigue Strength, MPa 380
340
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 850
770
Tensile Strength: Yield (Proof), MPa 620
550

Thermal Properties

Latent Heat of Fusion, J/g 280
300
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 770
1100
Melting Completion (Liquidus), °C 1450
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
17
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.2
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
18
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 2.5
3.5
Embodied Energy, MJ/kg 34
49
Embodied Water, L/kg 110
180

Common Calculations

PREN (Pitting Resistance) 15
32
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
130
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
760
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30
28
Strength to Weight: Bending, points 26
24
Thermal Diffusivity, mm2/s 6.7
4.5
Thermal Shock Resistance, points 31
21

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.040
Chromium (Cr), % 11.5 to 14
24.5 to 26.5
Copper (Cu), % 0
2.8 to 3.3
Iron (Fe), % 78.4 to 84.6
59.9 to 66.3
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.4 to 1.0
1.8 to 2.3
Nickel (Ni), % 3.5 to 4.5
4.8 to 6.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.040