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ASTM A387 Grade 21 Steel vs. C77300 Nickel Silver

ASTM A387 grade 21 steel belongs to the iron alloys classification, while C77300 nickel silver belongs to the copper alloys. There are 22 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 21 steel and the bottom bar is C77300 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 74
42
Tensile Strength: Ultimate (UTS), MPa 500 to 590
540

Thermal Properties

Latent Heat of Fusion, J/g 260
180
Maximum Temperature: Mechanical, °C 480
130
Melting Completion (Liquidus), °C 1470
940
Melting Onset (Solidus), °C 1430
920
Specific Heat Capacity, J/kg-K 470
390
Thermal Expansion, µm/m-K 13
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
5.5
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
6.3

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
26
Density, g/cm3 7.9
7.9
Embodied Carbon, kg CO2/kg material 1.8
3.5
Embodied Energy, MJ/kg 23
56
Embodied Water, L/kg 62
310

Common Calculations

Stiffness to Weight: Axial, points 13
7.7
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 18 to 21
19
Strength to Weight: Bending, points 18 to 20
19
Thermal Shock Resistance, points 14 to 17
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
46 to 50
Iron (Fe), % 94.4 to 96
0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
9.0 to 11
Phosphorus (P), % 0 to 0.025
0 to 0.25
Silicon (Si), % 0 to 0.5
0.040 to 0.25
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
37.9 to 45
Residuals, % 0
0 to 0.5