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ASTM A232 Spring Steel vs. C63800 Bronze

ASTM A232 spring steel belongs to the iron alloys classification, while C63800 bronze belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM A232 spring steel and the bottom bar is C63800 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14
7.9 to 41
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
43
Shear Strength, MPa 1090
320 to 500
Tensile Strength: Ultimate (UTS), MPa 1790
460 to 1010

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 420
200
Melting Completion (Liquidus), °C 1460
1030
Melting Onset (Solidus), °C 1410
1000
Specific Heat Capacity, J/kg-K 470
410
Thermal Conductivity, W/m-K 52
40
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
10
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
10

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
30
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 2.0
2.8
Embodied Energy, MJ/kg 28
45
Embodied Water, L/kg 51
330

Common Calculations

Stiffness to Weight: Axial, points 13
7.4
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 64
15 to 33
Strength to Weight: Bending, points 42
15 to 26
Thermal Diffusivity, mm2/s 14
11
Thermal Shock Resistance, points 53
17 to 36

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.1
Carbon (C), % 0.48 to 0.53
0
Chromium (Cr), % 0.8 to 1.1
0
Cobalt (Co), % 0
0.25 to 0.55
Copper (Cu), % 0
92.4 to 95.8
Iron (Fe), % 96.8 to 97.7
0 to 0.2
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0.7 to 0.9
0 to 0.1
Nickel (Ni), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.15 to 0.35
1.5 to 2.1
Sulfur (S), % 0 to 0.035
0
Vanadium (V), % 0.15 to 0.3
0
Zinc (Zn), % 0
0 to 0.8
Residuals, % 0
0 to 0.5