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ASTM A232 Spring Steel vs. C69700 Brass

ASTM A232 spring steel belongs to the iron alloys classification, while C69700 brass belongs to the copper alloys. There are 26 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A232 spring steel and the bottom bar is C69700 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14
25
Poisson's Ratio 0.29
0.32
Shear Modulus, GPa 73
41
Shear Strength, MPa 1090
300
Tensile Strength: Ultimate (UTS), MPa 1790
470
Tensile Strength: Yield (Proof), MPa 1610
230

Thermal Properties

Latent Heat of Fusion, J/g 250
240
Maximum Temperature: Mechanical, °C 420
160
Melting Completion (Liquidus), °C 1460
930
Melting Onset (Solidus), °C 1410
880
Specific Heat Capacity, J/kg-K 470
400
Thermal Conductivity, W/m-K 52
43
Thermal Expansion, µm/m-K 13
19

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
26
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 2.0
2.7
Embodied Energy, MJ/kg 28
44
Embodied Water, L/kg 51
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
99
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 64
16
Strength to Weight: Bending, points 42
16
Thermal Diffusivity, mm2/s 14
13
Thermal Shock Resistance, points 53
16

Alloy Composition

Carbon (C), % 0.48 to 0.53
0
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
75 to 80
Iron (Fe), % 96.8 to 97.7
0 to 0.2
Lead (Pb), % 0
0.5 to 1.5
Manganese (Mn), % 0.7 to 0.9
0 to 0.4
Phosphorus (P), % 0 to 0.020
0
Silicon (Si), % 0.15 to 0.35
2.5 to 3.5
Sulfur (S), % 0 to 0.035
0
Vanadium (V), % 0.15 to 0.3
0
Zinc (Zn), % 0
13.9 to 22
Residuals, % 0
0 to 0.5