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CC381H Copper-nickel vs. ASTM A227 Spring Steel

CC381H copper-nickel belongs to the copper alloys classification, while ASTM A227 spring steel belongs to the iron alloys. There are 28 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 CC381H copper-nickel and the bottom bar is ASTM A227 spring steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 91
500 to 640
Elastic (Young's, Tensile) Modulus, GPa 140
190
Elongation at Break, % 20
12
Poisson's Ratio 0.33
0.29
Shear Modulus, GPa 52
72
Tensile Strength: Ultimate (UTS), MPa 380
1720 to 2220
Tensile Strength: Yield (Proof), MPa 140
1430 to 1850

Thermal Properties

Latent Heat of Fusion, J/g 240
250
Maximum Temperature: Mechanical, °C 260
400
Melting Completion (Liquidus), °C 1180
1450
Melting Onset (Solidus), °C 1120
1410
Specific Heat Capacity, J/kg-K 410
470
Thermal Conductivity, W/m-K 30
52
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 6.8
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 6.9
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 40
1.8
Density, g/cm3 8.9
7.8
Embodied Carbon, kg CO2/kg material 5.0
1.4
Embodied Energy, MJ/kg 73
19
Embodied Water, L/kg 280
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 60
200 to 260
Stiffness to Weight: Axial, points 8.6
13
Stiffness to Weight: Bending, points 19
24
Strength to Weight: Axial, points 12
61 to 79
Strength to Weight: Bending, points 13
41 to 48
Thermal Diffusivity, mm2/s 8.4
14
Thermal Shock Resistance, points 13
55 to 71

Alloy Composition

Aluminum (Al), % 0 to 0.010
0
Carbon (C), % 0 to 0.030
0.45 to 0.85
Copper (Cu), % 64.5 to 69.9
0
Iron (Fe), % 0.5 to 1.5
97.4 to 99.1
Lead (Pb), % 0 to 0.030
0
Manganese (Mn), % 0.6 to 1.2
0.3 to 1.3
Nickel (Ni), % 29 to 31
0
Phosphorus (P), % 0 to 0.010
0 to 0.040
Silicon (Si), % 0 to 0.1
0.15 to 0.35
Sulfur (S), % 0 to 0.010
0 to 0.050
Zinc (Zn), % 0 to 0.5
0