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ASTM A387 Grade 12 Steel vs. ASTM B617 Coin Silver

ASTM A387 grade 12 steel belongs to the iron alloys classification, while ASTM B617 coin silver belongs to the otherwise unclassified metals. There are 19 material properties with values for both materials. Properties with values for just one material (13, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 12 steel and the bottom bar is ASTM B617 coin silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
75
Elongation at Break, % 25
1.1 to 22
Poisson's Ratio 0.29
0.37
Shear Modulus, GPa 73
28
Shear Strength, MPa 300 to 330
180 to 290
Tensile Strength: Ultimate (UTS), MPa 470 to 520
290 to 520

Thermal Properties

Latent Heat of Fusion, J/g 250
120
Melting Completion (Liquidus), °C 1470
870
Melting Onset (Solidus), °C 1420
780
Specific Heat Capacity, J/kg-K 470
250
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
83
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
72

Otherwise Unclassified Properties

Density, g/cm3 7.8
10

Common Calculations

Stiffness to Weight: Axial, points 13
4.1
Stiffness to Weight: Bending, points 24
14
Strength to Weight: Axial, points 16 to 18
7.7 to 14
Strength to Weight: Bending, points 17 to 18
9.3 to 14
Thermal Shock Resistance, points 14 to 15
14 to 25

Alloy Composition


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Aluminum (Al), % 0
0 to 0.0050
Cadmium (Cd), % 0
0 to 0.050
Carbon (C), % 0.050 to 0.17
0
Chromium (Cr), % 0.8 to 1.2
0
Copper (Cu), % 0
9.0 to 10.4
Iron (Fe), % 97 to 98.2
0 to 0.050
Lead (Pb), % 0
0 to 0.030
Manganese (Mn), % 0.4 to 0.65
0
Molybdenum (Mo), % 0.45 to 0.6
0
Nickel (Ni), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.025
0 to 0.020
Silicon (Si), % 0.15 to 0.4
0
Silver (Ag), % 0
89.6 to 91
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
0 to 0.060
Residuals, % 0
0 to 0.060

Comparable Variants