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ASTM A387 Grade 21 Steel vs. C75400 Nickel Silver

ASTM A387 grade 21 steel belongs to the iron alloys classification, while C75400 nickel silver belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 C75400 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 21
2.0 to 43
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 74
46
Shear Strength, MPa 310 to 370
250 to 370
Tensile Strength: Ultimate (UTS), MPa 500 to 590
370 to 630
Tensile Strength: Yield (Proof), MPa 230 to 350
130 to 590

Thermal Properties

Latent Heat of Fusion, J/g 260
200
Maximum Temperature: Mechanical, °C 480
190
Melting Completion (Liquidus), °C 1470
1080
Melting Onset (Solidus), °C 1430
1040
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 41
36
Thermal Expansion, µm/m-K 13
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
7.4

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
32
Density, g/cm3 7.9
8.5
Embodied Carbon, kg CO2/kg material 1.8
3.8
Embodied Energy, MJ/kg 23
59
Embodied Water, L/kg 62
300

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84 to 110
12 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 320
75 to 1450
Stiffness to Weight: Axial, points 13
7.9
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 18 to 21
12 to 21
Strength to Weight: Bending, points 18 to 20
13 to 19
Thermal Diffusivity, mm2/s 11
11
Thermal Shock Resistance, points 14 to 17
12 to 21

Alloy Composition

Carbon (C), % 0.050 to 0.15
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
63.5 to 66.5
Iron (Fe), % 94.4 to 96
0 to 0.25
Lead (Pb), % 0
0 to 0.1
Manganese (Mn), % 0.3 to 0.6
0 to 0.5
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
14 to 16
Phosphorus (P), % 0 to 0.025
0
Silicon (Si), % 0 to 0.5
0
Sulfur (S), % 0 to 0.025
0
Zinc (Zn), % 0
16.2 to 22.5
Residuals, % 0
0 to 0.5