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ASTM A387 Grade 21L Class 1 vs. CR007A Copper

ASTM A387 grade 21L class 1 belongs to the iron alloys classification, while CR007A copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (4, 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 CR007A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 21
15
Poisson's Ratio 0.29
0.34
Shear Modulus, GPa 74
43
Tensile Strength: Ultimate (UTS), MPa 500
230
Tensile Strength: Yield (Proof), MPa 230
140

Thermal Properties

Latent Heat of Fusion, J/g 260
210
Maximum Temperature: Mechanical, °C 480
200
Melting Completion (Liquidus), °C 1470
1090
Melting Onset (Solidus), °C 1430
1040
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 41
380
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.6
100
Electrical Conductivity: Equal Weight (Specific), % IACS 8.8
100

Otherwise Unclassified Properties

Base Metal Price, % relative 4.1
31
Density, g/cm3 7.9
9.0
Embodied Carbon, kg CO2/kg material 1.8
2.6
Embodied Energy, MJ/kg 23
41
Embodied Water, L/kg 62
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 84
31
Resilience: Unit (Modulus of Resilience), kJ/m3 140
83
Stiffness to Weight: Axial, points 13
7.2
Stiffness to Weight: Bending, points 24
18
Strength to Weight: Axial, points 18
7.1
Strength to Weight: Bending, points 18
9.3
Thermal Diffusivity, mm2/s 11
110
Thermal Shock Resistance, points 14
8.1

Alloy Composition

Antimony (Sb), % 0
0 to 0.00040
Arsenic (As), % 0
0 to 0.00050
Bismuth (Bi), % 0
0 to 0.00020
Carbon (C), % 0 to 0.1
0
Chromium (Cr), % 2.8 to 3.3
0
Copper (Cu), % 0
99.994 to 100
Iron (Fe), % 94.4 to 96.1
0 to 0.0010
Lead (Pb), % 0
0 to 0.00050
Manganese (Mn), % 0.3 to 0.6
0
Molybdenum (Mo), % 0.9 to 1.1
0
Phosphorus (P), % 0 to 0.025
0
Selenium (Se), % 0
0 to 0.00020
Silicon (Si), % 0 to 0.5
0
Silver (Ag), % 0
0 to 0.0025
Sulfur (S), % 0 to 0.025
0 to 0.0015
Tellurium (Te), % 0
0 to 0.00020