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ACI-ASTM CD4MCuN Steel vs. SAE-AISI M3 Class 1 Steel

Both ACI-ASTM CD4MCuN steel and SAE-AISI M3 class 1 steel are iron alloys. They have 70% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CD4MCuN steel and the bottom bar is SAE-AISI M3 class 1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 79
77
Tensile Strength: Ultimate (UTS), MPa 770
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 300
260
Melting Completion (Liquidus), °C 1420
1610
Melting Onset (Solidus), °C 1380
1570
Specific Heat Capacity, J/kg-K 480
440
Thermal Conductivity, W/m-K 17
26
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 18
25
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 3.5
10
Embodied Energy, MJ/kg 49
150
Embodied Water, L/kg 180
100

Common Calculations

PREN (Pitting Resistance) 35
33
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 28
26 to 72
Strength to Weight: Bending, points 24
22 to 44
Thermal Diffusivity, mm2/s 4.5
7.2
Thermal Shock Resistance, points 21
24 to 67

Alloy Composition

Carbon (C), % 0 to 0.040
1.0 to 1.1
Chromium (Cr), % 24.5 to 26.5
3.8 to 4.5
Copper (Cu), % 2.7 to 3.3
0 to 0.25
Iron (Fe), % 59.5 to 66.3
76.9 to 82.9
Manganese (Mn), % 0 to 1.0
0.15 to 0.4
Molybdenum (Mo), % 1.7 to 2.3
4.8 to 6.5
Nickel (Ni), % 4.7 to 6.0
0 to 0.3
Nitrogen (N), % 0.1 to 0.25
0
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0.2 to 0.45
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.3 to 2.8