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ASTM A229 Spring Steel vs. C79600 Nickel Silver

ASTM A229 spring steel belongs to the iron alloys classification, while C79600 nickel silver belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A229 spring steel and the bottom bar is C79600 nickel silver.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14
15
Poisson's Ratio 0.29
0.3
Shear Modulus, GPa 72
43
Shear Strength, MPa 1020 to 1140
290
Tensile Strength: Ultimate (UTS), MPa 1690 to 1890
480
Tensile Strength: Yield (Proof), MPa 1100 to 1230
300

Thermal Properties

Latent Heat of Fusion, J/g 250
180
Maximum Temperature: Mechanical, °C 400
130
Melting Completion (Liquidus), °C 1450
930
Melting Onset (Solidus), °C 1410
880
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 50
36
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
25
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.4
3.5
Embodied Energy, MJ/kg 19
57
Embodied Water, L/kg 46
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
63
Resilience: Unit (Modulus of Resilience), kJ/m3 3260 to 4080
400
Stiffness to Weight: Axial, points 13
7.8
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 60 to 67
17
Strength to Weight: Bending, points 40 to 43
17
Thermal Diffusivity, mm2/s 14
12
Thermal Shock Resistance, points 54 to 60
15

Alloy Composition

Carbon (C), % 0.55 to 0.85
0
Copper (Cu), % 0
43.5 to 46.5
Iron (Fe), % 97.5 to 99
0
Lead (Pb), % 0
0.8 to 1.2
Manganese (Mn), % 0.3 to 1.2
1.5 to 2.5
Nickel (Ni), % 0
9.0 to 11
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
38.3 to 45.2
Residuals, % 0
0 to 0.5