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ASTM A229 Spring Steel vs. C34500 Brass

ASTM A229 spring steel belongs to the iron alloys classification, while C34500 brass belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is ASTM A229 spring steel and the bottom bar is C34500 brass.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
100
Elongation at Break, % 14
12 to 28
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 72
40
Shear Strength, MPa 1020 to 1140
220 to 260
Tensile Strength: Ultimate (UTS), MPa 1690 to 1890
340 to 430
Tensile Strength: Yield (Proof), MPa 1100 to 1230
120 to 180

Thermal Properties

Latent Heat of Fusion, J/g 250
170
Maximum Temperature: Mechanical, °C 400
120
Melting Completion (Liquidus), °C 1450
910
Melting Onset (Solidus), °C 1410
890
Specific Heat Capacity, J/kg-K 470
380
Thermal Conductivity, W/m-K 50
120
Thermal Expansion, µm/m-K 12
21

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
26
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
29

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
24
Density, g/cm3 7.8
8.2
Embodied Carbon, kg CO2/kg material 1.4
2.6
Embodied Energy, MJ/kg 19
45
Embodied Water, L/kg 46
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 200 to 230
42 to 75
Resilience: Unit (Modulus of Resilience), kJ/m3 3260 to 4080
69 to 160
Stiffness to Weight: Axial, points 13
7.1
Stiffness to Weight: Bending, points 24
19
Strength to Weight: Axial, points 60 to 67
12 to 15
Strength to Weight: Bending, points 40 to 43
13 to 16
Thermal Diffusivity, mm2/s 14
37
Thermal Shock Resistance, points 54 to 60
11 to 14

Alloy Composition

Carbon (C), % 0.55 to 0.85
0
Copper (Cu), % 0
62 to 65
Iron (Fe), % 97.5 to 99
0 to 0.15
Lead (Pb), % 0
1.5 to 2.5
Manganese (Mn), % 0.3 to 1.2
0
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0.15 to 0.35
0
Sulfur (S), % 0 to 0.050
0
Zinc (Zn), % 0
32 to 36.5
Residuals, % 0
0 to 0.4

Comparable Variants