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SAE-AISI 1040 Steel vs. ASTM B541 Gold

SAE-AISI 1040 steel belongs to the iron alloys classification, while ASTM B541 gold belongs to the otherwise unclassified metals. There are 22 material properties with values for both materials. Properties with values for just one material (11, 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 SAE-AISI 1040 steel and the bottom bar is ASTM B541 gold.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 13 to 20
6.0 to 14
Poisson's Ratio 0.29
0.4
Shear Modulus, GPa 73
38
Shear Strength, MPa 350 to 390
410 to 690
Tensile Strength: Ultimate (UTS), MPa 570 to 640
670 to 1180
Tensile Strength: Yield (Proof), MPa 320 to 530
480 to 900

Thermal Properties

Latent Heat of Fusion, J/g 250
90
Melting Completion (Liquidus), °C 1460
1110
Melting Onset (Solidus), °C 1420
930
Specific Heat Capacity, J/kg-K 470
170
Thermal Expansion, µm/m-K 12
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
7.7 to 12
Electrical Conductivity: Equal Weight (Specific), % IACS 8.0
4.0 to 6.2

Otherwise Unclassified Properties

Density, g/cm3 7.8
17

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 79 to 96
65 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 270 to 760
1090 to 3830
Stiffness to Weight: Axial, points 13
3.4
Stiffness to Weight: Bending, points 24
9.0
Strength to Weight: Axial, points 20 to 23
11 to 19
Strength to Weight: Bending, points 19 to 21
9.8 to 14
Thermal Shock Resistance, points 18 to 20
36 to 63

Alloy Composition

Carbon (C), % 0.37 to 0.44
0
Copper (Cu), % 0
13.5 to 15.5
Gold (Au), % 0
70.5 to 72.5
Iron (Fe), % 98.6 to 99.03
0
Manganese (Mn), % 0.6 to 0.9
0
Phosphorus (P), % 0 to 0.040
0
Platinum (Pt), % 0
8.0 to 9.0
Silver (Ag), % 0
4.0 to 5.0
Sulfur (S), % 0 to 0.050
0
Zinc (Zn), % 0
0.7 to 1.3
Residuals, % 0
0 to 0.4