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ACI-ASTM CK3MCuN Steel vs. ASTM B541 Gold

ACI-ASTM CK3MCuN steel belongs to the iron alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is ACI-ASTM CK3MCuN steel and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
110
Elongation at Break, % 39
6.0 to 14
Poisson's Ratio 0.28
0.4
Shear Modulus, GPa 80
38
Tensile Strength: Ultimate (UTS), MPa 620
670 to 1180
Tensile Strength: Yield (Proof), MPa 290
480 to 900

Thermal Properties

Latent Heat of Fusion, J/g 300
90
Melting Completion (Liquidus), °C 1460
1110
Melting Onset (Solidus), °C 1350
930
Specific Heat Capacity, J/kg-K 460
170
Thermal Expansion, µm/m-K 16
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.9
7.7 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 2.1
4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm3 8.0
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
65 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 210
1090 to 3830
Stiffness to Weight: Axial, points 14
3.4
Stiffness to Weight: Bending, points 24
9.0
Strength to Weight: Axial, points 21
11 to 19
Strength to Weight: Bending, points 20
9.8 to 14
Thermal Shock Resistance, points 14
36 to 63

Alloy Composition

Carbon (C), % 0 to 0.025
0
Chromium (Cr), % 19.5 to 20.5
0
Copper (Cu), % 0.5 to 1.0
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 49.5 to 56.3
0
Manganese (Mn), % 0 to 1.2
0
Molybdenum (Mo), % 6.0 to 7.0
0
Nickel (Ni), % 17.5 to 19.5
0
Nitrogen (N), % 0.18 to 0.24
0
Phosphorus (P), % 0 to 0.045
0
Platinum (Pt), % 0
8.0 to 9.0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
4.0 to 5.0
Sulfur (S), % 0 to 0.010
0
Zinc (Zn), % 0
0.7 to 1.3
Residuals, % 0
0 to 0.4