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ASTM A387 Grade 21 Steel vs. C76400 Nickel Silver

ASTM A387 grade 21 steel belongs to the iron alloys classification, while C76400 nickel silver belongs to the copper alloys. There are 24 material properties with values for both materials. Properties with values for just one material (8, 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 C76400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
46
Tensile Strength: Ultimate (UTS), MPa 500 to 590
590 to 610

Thermal Properties

Latent Heat of Fusion, J/g 260
200
Maximum Temperature: Mechanical, °C 480
190
Melting Completion (Liquidus), °C 1470
990
Melting Onset (Solidus), °C 1430
950
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 41
31
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
5.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
6.1

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
32
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 1.8
4.1
Embodied Energy, MJ/kg 23
63
Embodied Water, L/kg 62
300

Common Calculations

Stiffness to Weight: Axial, points 13
8.1
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 18 to 21
19 to 20
Strength to Weight: Bending, points 18 to 20
18 to 19
Thermal Diffusivity, mm2/s 11
9.3
Thermal Shock Resistance, points 14 to 17
19 to 20

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
58.5 to 61.5
Iron (Fe), % 94.4 to 96
0 to 0.25
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.3 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
16.5 to 19.5
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
17.7 to 25
Residuals, % 0
0 to 0.5