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C69700 Brass vs. ASTM A229 Spring Steel

C69700 brass belongs to the copper alloys classification, while ASTM A229 spring steel belongs to the iron 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 C69700 brass and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 110
190
Elongation at Break, % 25
14
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 41
72
Shear Strength, MPa 300
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 470
1690 to 1890
Tensile Strength: Yield (Proof), MPa 230
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Maximum Temperature: Mechanical, °C 160
400
Melting Completion (Liquidus), °C 930
1450
Melting Onset (Solidus), °C 880
1410
Specific Heat Capacity, J/kg-K 400
470
Thermal Conductivity, W/m-K 43
50
Thermal Expansion, µm/m-K 19
12

Otherwise Unclassified Properties

Base Metal Price, % relative 26
1.8
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.4
Embodied Energy, MJ/kg 44
19
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 250
3260 to 4080
Stiffness to Weight: Axial, points 7.3
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 16
60 to 67
Strength to Weight: Bending, points 16
40 to 43
Thermal Diffusivity, mm2/s 13
14
Thermal Shock Resistance, points 16
54 to 60

Alloy Composition

Carbon (C), % 0
0.55 to 0.85
Copper (Cu), % 75 to 80
0
Iron (Fe), % 0 to 0.2
97.5 to 99
Lead (Pb), % 0.5 to 1.5
0
Manganese (Mn), % 0 to 0.4
0.3 to 1.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 2.5 to 3.5
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 13.9 to 22
0
Residuals, % 0 to 0.5
0