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ASTM A227 Spring Steel vs. C85700 Brass

ASTM A227 spring steel belongs to the iron alloys classification, while C85700 brass belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is ASTM A227 spring steel and the bottom bar is C85700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 12
17
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 72
40
Tensile Strength: Ultimate (UTS), MPa 1720 to 2220
310
Tensile Strength: Yield (Proof), MPa 1430 to 1850
110

Thermal Properties

Latent Heat of Fusion, J/g 250
170
Maximum Temperature: Mechanical, °C 400
120
Melting Completion (Liquidus), °C 1450
940
Melting Onset (Solidus), °C 1410
910
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 52
84
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
22
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
25

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 1.4
2.8
Embodied Energy, MJ/kg 19
47
Embodied Water, L/kg 46
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 260
41
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
20
Strength to Weight: Axial, points 61 to 79
11
Strength to Weight: Bending, points 41 to 48
13
Thermal Diffusivity, mm2/s 14
27
Thermal Shock Resistance, points 55 to 71
10

Alloy Composition

Aluminum (Al), % 0
0 to 0.8
Carbon (C), % 0.45 to 0.85
0
Copper (Cu), % 0
58 to 64
Iron (Fe), % 97.4 to 99.1
0 to 0.7
Lead (Pb), % 0
0.8 to 1.5
Manganese (Mn), % 0.3 to 1.3
0
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.15 to 0.35
0 to 0.050
Sulfur (S), % 0 to 0.050
0
Tin (Sn), % 0
0.5 to 1.5
Zinc (Zn), % 0
32 to 40
Residuals, % 0
0 to 1.3