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C99400 Brass vs. ASTM A229 Spring Steel

C99400 brass belongs to the copper alloys classification, while ASTM A229 spring steel belongs to the iron alloys. There are 24 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is C99400 brass and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 120
190
Poisson's Ratio 0.34
0.29
Shear Modulus, GPa 44
72
Tensile Strength: Ultimate (UTS), MPa 460 to 550
1690 to 1890
Tensile Strength: Yield (Proof), MPa 230 to 370
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 230
250
Maximum Temperature: Mechanical, °C 200
400
Melting Completion (Liquidus), °C 1070
1450
Melting Onset (Solidus), °C 1020
1410
Specific Heat Capacity, J/kg-K 400
470
Thermal Expansion, µm/m-K 17
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 17
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 17
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 30
1.8
Density, g/cm3 8.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
1.4
Embodied Energy, MJ/kg 45
19
Embodied Water, L/kg 310
46

Common Calculations

Resilience: Unit (Modulus of Resilience), kJ/m3 230 to 590
3260 to 4080
Stiffness to Weight: Axial, points 7.5
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 15 to 17
60 to 67
Strength to Weight: Bending, points 15 to 17
40 to 43
Thermal Shock Resistance, points 16 to 19
54 to 60

Alloy Composition

Aluminum (Al), % 0.5 to 2.0
0
Carbon (C), % 0
0.55 to 0.85
Copper (Cu), % 83.5 to 96.5
0
Iron (Fe), % 1.0 to 3.0
97.5 to 99
Lead (Pb), % 0 to 0.25
0
Manganese (Mn), % 0 to 0.5
0.3 to 1.2
Nickel (Ni), % 1.0 to 3.5
0
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0.5 to 2.0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 0.5 to 5.0
0
Residuals, % 0 to 0.3
0

Comparable Variants