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ASTM A227 Spring Steel vs. C95200 Bronze

ASTM A227 spring steel belongs to the iron alloys classification, while C95200 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 C95200 bronze.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 500 to 640
120
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 12
29
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 72
42
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
520
Tensile Strength: Yield (Proof), MPa 1430 to 1850
190

Thermal Properties

Latent Heat of Fusion, J/g 250
230
Maximum Temperature: Mechanical, °C 400
220
Melting Completion (Liquidus), °C 1450
1050
Melting Onset (Solidus), °C 1410
1040
Specific Heat Capacity, J/kg-K 470
430
Thermal Conductivity, W/m-K 52
50
Thermal Expansion, µm/m-K 12
18

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
8.3
Embodied Carbon, kg CO2/kg material 1.4
3.0
Embodied Energy, MJ/kg 19
50
Embodied Water, L/kg 46
380

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
120
Stiffness to Weight: Axial, points 13
7.6
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 61 to 79
17
Strength to Weight: Bending, points 41 to 48
17
Thermal Diffusivity, mm2/s 14
14
Thermal Shock Resistance, points 55 to 71
19

Alloy Composition

Aluminum (Al), % 0
8.5 to 9.5
Carbon (C), % 0.45 to 0.85
0
Copper (Cu), % 0
86 to 89
Iron (Fe), % 97.4 to 99.1
2.5 to 4.0
Manganese (Mn), % 0.3 to 1.3
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.050
0
Residuals, % 0
0 to 1.0