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ASTM A227 Spring Steel vs. CC497K Bronze

ASTM A227 spring steel belongs to the iron alloys classification, while CC497K bronze belongs to the copper alloys. There are 28 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 A227 spring steel and the bottom bar is CC497K bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 500 to 640
55
Elastic (Young's, Tensile) Modulus, GPa 190
93
Elongation at Break, % 12
6.7
Poisson's Ratio 0.29
0.36
Shear Modulus, GPa 72
34
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
190
Tensile Strength: Yield (Proof), MPa 1430 to 1850
91

Thermal Properties

Latent Heat of Fusion, J/g 250
160
Maximum Temperature: Mechanical, °C 400
130
Melting Completion (Liquidus), °C 1450
870
Melting Onset (Solidus), °C 1410
800
Specific Heat Capacity, J/kg-K 470
330
Thermal Conductivity, W/m-K 52
53
Thermal Expansion, µm/m-K 12
20

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
9.0
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.7

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
29
Density, g/cm3 7.8
9.3
Embodied Carbon, kg CO2/kg material 1.4
3.0
Embodied Energy, MJ/kg 19
48
Embodied Water, L/kg 46
370

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
10
Stiffness to Weight: Axial, points 13
5.5
Stiffness to Weight: Bending, points 24
16
Strength to Weight: Axial, points 61 to 79
5.6
Strength to Weight: Bending, points 41 to 48
7.8
Thermal Diffusivity, mm2/s 14
17
Thermal Shock Resistance, points 55 to 71
7.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Antimony (Sb), % 0
0 to 0.75
Carbon (C), % 0.45 to 0.85
0
Copper (Cu), % 0
67.5 to 77.5
Iron (Fe), % 97.4 to 99.1
0 to 0.25
Lead (Pb), % 0
18 to 23
Manganese (Mn), % 0.3 to 1.3
0 to 0.2
Nickel (Ni), % 0
0.5 to 2.5
Phosphorus (P), % 0 to 0.040
0 to 0.1
Silicon (Si), % 0.15 to 0.35
0 to 0.010
Sulfur (S), % 0 to 0.050
0 to 0.1
Tin (Sn), % 0
4.0 to 6.0
Zinc (Zn), % 0
0 to 2.0