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SAE-AISI 8645 Steel vs. Commercially Pure Silver

SAE-AISI 8645 steel belongs to the iron alloys classification, while commercially pure silver belongs to the otherwise unclassified metals. There are 21 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 8645 steel and the bottom bar is commercially pure silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
71
Elongation at Break, % 12 to 23
1.1 to 29
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 73
26
Shear Strength, MPa 380 to 400
120 to 190
Tensile Strength: Ultimate (UTS), MPa 600 to 670
190 to 340

Thermal Properties

Latent Heat of Fusion, J/g 250
110
Melting Completion (Liquidus), °C 1460
960
Melting Onset (Solidus), °C 1420
960
Specific Heat Capacity, J/kg-K 470
240
Thermal Conductivity, W/m-K 39
420
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
100
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
87

Otherwise Unclassified Properties

Density, g/cm3 7.8
10

Common Calculations

Stiffness to Weight: Axial, points 13
3.8
Stiffness to Weight: Bending, points 24
13
Strength to Weight: Axial, points 21 to 24
4.9 to 8.9
Strength to Weight: Bending, points 20 to 22
6.9 to 10
Thermal Diffusivity, mm2/s 10
170
Thermal Shock Resistance, points 18 to 20
9.5 to 17

Alloy Composition

Carbon (C), % 0.43 to 0.48
0
Chromium (Cr), % 0.4 to 0.6
0
Iron (Fe), % 96.5 to 97.7
0
Manganese (Mn), % 0.75 to 1.0
0
Molybdenum (Mo), % 0.15 to 0.25
0
Nickel (Ni), % 0.4 to 0.7
0
Phosphorus (P), % 0 to 0.035
0
Silicon (Si), % 0.15 to 0.35
0
Silver (Ag), % 0
99.9 to 100
Sulfur (S), % 0 to 0.040
0
Residuals, % 0
0 to 0.1

Comparable Variants