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ASTM A387 Grade 21L Class 1 vs. C70260 Copper

ASTM A387 grade 21L class 1 belongs to the iron alloys classification, while C70260 copper belongs to the copper 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 ASTM A387 grade 21L class 1 and the bottom bar is C70260 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 21
9.5 to 19
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 74
44
Shear Strength, MPa 310
320 to 450
Tensile Strength: Ultimate (UTS), MPa 500
520 to 760
Tensile Strength: Yield (Proof), MPa 230
410 to 650

Thermal Properties

Latent Heat of Fusion, J/g 260
220
Maximum Temperature: Mechanical, °C 480
200
Melting Completion (Liquidus), °C 1470
1060
Melting Onset (Solidus), °C 1430
1040
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 41
160
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
40 to 50
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
40 to 51

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
31
Density, g/cm3 7.9
8.9
Embodied Carbon, kg CO2/kg material 1.8
2.7
Embodied Energy, MJ/kg 23
43
Embodied Water, L/kg 62
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
46 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 140
710 to 1810
Stiffness to Weight: Axial, points 13
7.3
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 18
16 to 24
Strength to Weight: Bending, points 18
16 to 21
Thermal Diffusivity, mm2/s 11
45
Thermal Shock Resistance, points 14
18 to 27

Alloy Composition

Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
95.8 to 98.8
Iron (Fe), % 94.4 to 96.1
0
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Nickel (Ni), % 0
1.0 to 3.0
Phosphorus (P), % 0 to 0.025
0 to 0.010
Silicon (Si), % 0 to 0.5
0.2 to 0.7
Sulfur (S), % 0 to 0.025
0
Residuals, % 0
0 to 0.5