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ASTM A232 Spring Steel vs. CC490K Brass

ASTM A232 spring steel belongs to the iron alloys classification, while CC490K brass belongs to the copper alloys. There are 28 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 A232 spring steel and the bottom bar is CC490K brass.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 540
76
Elastic (Young's, Tensile) Modulus, GPa 190
110
Elongation at Break, % 14
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 73
40
Tensile Strength: Ultimate (UTS), MPa 1790
230
Tensile Strength: Yield (Proof), MPa 1610
110

Thermal Properties

Latent Heat of Fusion, J/g 250
190
Maximum Temperature: Mechanical, °C 420
160
Melting Completion (Liquidus), °C 1460
980
Melting Onset (Solidus), °C 1410
910
Specific Heat Capacity, J/kg-K 470
370
Thermal Conductivity, W/m-K 52
72
Thermal Expansion, µm/m-K 13
19

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.3
16
Electrical Conductivity: Equal Weight (Specific), % IACS 8.4
16

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
30
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 2.0
2.9
Embodied Energy, MJ/kg 28
47
Embodied Water, L/kg 51
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 250
28
Stiffness to Weight: Axial, points 13
6.8
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 64
7.3
Strength to Weight: Bending, points 42
9.5
Thermal Diffusivity, mm2/s 14
22
Thermal Shock Resistance, points 53
8.2

Alloy Composition

Aluminum (Al), % 0
0 to 0.010
Antimony (Sb), % 0
0 to 0.3
Carbon (C), % 0.48 to 0.53
0
Chromium (Cr), % 0.8 to 1.1
0
Copper (Cu), % 0
81 to 86
Iron (Fe), % 96.8 to 97.7
0 to 0.5
Lead (Pb), % 0
3.0 to 6.0
Manganese (Mn), % 0.7 to 0.9
0
Nickel (Ni), % 0
0 to 2.0
Phosphorus (P), % 0 to 0.020
0 to 0.050
Silicon (Si), % 0.15 to 0.35
0 to 0.010
Sulfur (S), % 0 to 0.035
0 to 0.1
Tin (Sn), % 0
2.0 to 3.5
Vanadium (V), % 0.15 to 0.3
0
Zinc (Zn), % 0
7.0 to 9.5