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ACI-ASTM CK3MCuN Steel vs. SAE-AISI A6 Steel

Both ACI-ASTM CK3MCuN steel and SAE-AISI A6 steel are iron alloys. They have 56% of their average alloy composition in common. There are 24 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is ACI-ASTM CK3MCuN steel and the bottom bar is SAE-AISI A6 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 620
750 to 1990

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1350
1410
Specific Heat Capacity, J/kg-K 460
470
Thermal Conductivity, W/m-K 12
41
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 29
3.7
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 5.6
1.8
Embodied Energy, MJ/kg 76
24
Embodied Water, L/kg 190
57

Common Calculations

PREN (Pitting Resistance) 45
4.8
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 21
27 to 71
Strength to Weight: Bending, points 20
23 to 45
Thermal Diffusivity, mm2/s 3.2
11
Thermal Shock Resistance, points 14
25 to 65

Alloy Composition

Carbon (C), % 0 to 0.025
0.65 to 0.75
Chromium (Cr), % 19.5 to 20.5
0.9 to 1.2
Copper (Cu), % 0.5 to 1.0
0 to 0.25
Iron (Fe), % 49.5 to 56.3
93 to 95.8
Manganese (Mn), % 0 to 1.2
1.8 to 2.5
Molybdenum (Mo), % 6.0 to 7.0
0.9 to 1.4
Nickel (Ni), % 17.5 to 19.5
0 to 0.3
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.030