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C28000 Muntz Metal vs. ASTM A229 Spring Steel

C28000 Muntz Metal belongs to the copper alloys classification, while ASTM A229 spring steel belongs to the iron alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is C28000 Muntz Metal and the bottom bar is ASTM A229 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 100
190
Elongation at Break, % 10 to 45
14
Poisson's Ratio 0.31
0.29
Shear Modulus, GPa 40
72
Shear Strength, MPa 230 to 330
1020 to 1140
Tensile Strength: Ultimate (UTS), MPa 330 to 610
1690 to 1890
Tensile Strength: Yield (Proof), MPa 150 to 370
1100 to 1230

Thermal Properties

Latent Heat of Fusion, J/g 170
250
Maximum Temperature: Mechanical, °C 120
400
Melting Completion (Liquidus), °C 900
1450
Melting Onset (Solidus), °C 900
1410
Specific Heat Capacity, J/kg-K 390
470
Thermal Conductivity, W/m-K 120
50
Thermal Expansion, µm/m-K 21
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 28
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 31
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 23
1.8
Density, g/cm3 8.0
7.8
Embodied Carbon, kg CO2/kg material 2.7
1.4
Embodied Energy, MJ/kg 46
19
Embodied Water, L/kg 320
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 27 to 240
200 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 110 to 670
3260 to 4080
Stiffness to Weight: Axial, points 7.2
13
Stiffness to Weight: Bending, points 20
24
Strength to Weight: Axial, points 11 to 21
60 to 67
Strength to Weight: Bending, points 13 to 20
40 to 43
Thermal Diffusivity, mm2/s 40
14
Thermal Shock Resistance, points 11 to 20
54 to 60

Alloy Composition

Carbon (C), % 0
0.55 to 0.85
Copper (Cu), % 59 to 63
0
Iron (Fe), % 0 to 0.070
97.5 to 99
Lead (Pb), % 0 to 0.3
0
Manganese (Mn), % 0
0.3 to 1.2
Phosphorus (P), % 0
0 to 0.040
Silicon (Si), % 0
0.15 to 0.35
Sulfur (S), % 0
0 to 0.050
Zinc (Zn), % 36.3 to 41
0
Residuals, % 0 to 0.3
0

Comparable Variants