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ASTM A227 Spring Steel vs. C78200 Nickel Silver

ASTM A227 spring steel belongs to the iron alloys classification, while C78200 nickel silver belongs to the copper alloys. There are 28 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 A227 spring steel and the bottom bar is C78200 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12
3.0 to 40
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 72
43
Shear Strength, MPa 1030 to 1330
280 to 400
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
370 to 630
Tensile Strength: Yield (Proof), MPa 1430 to 1850
170 to 570

Thermal Properties

Latent Heat of Fusion, J/g 250
190
Maximum Temperature: Mechanical, °C 400
160
Melting Completion (Liquidus), °C 1450
1000
Melting Onset (Solidus), °C 1410
970
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 52
48
Thermal Expansion, µm/m-K 12
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
11
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
12

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
28
Density, g/cm3 7.8
8.4
Embodied Carbon, kg CO2/kg material 1.4
3.3
Embodied Energy, MJ/kg 19
52
Embodied Water, L/kg 46
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
18 to 120
Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 61 to 79
12 to 21
Strength to Weight: Bending, points 41 to 48
14 to 19
Thermal Diffusivity, mm2/s 14
15
Thermal Shock Resistance, points 55 to 71
12 to 21

Alloy Composition

Carbon (C), % 0.45 to 0.85
0
Copper (Cu), % 0
63 to 67
Iron (Fe), % 97.4 to 99.1
0 to 0.35
Lead (Pb), % 0
1.5 to 2.5
Manganese (Mn), % 0.3 to 1.3
0 to 0.5
Nickel (Ni), % 0
7.0 to 9.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.050
0
Zinc (Zn), % 0
20.2 to 28.5
Residuals, % 0
0 to 0.5

Comparable Variants