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AWS ER90S-B9 vs. CR021A Copper

AWS ER90S-B9 belongs to the iron alloys classification, while CR021A copper belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is AWS ER90S-B9 and the bottom bar is CR021A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
120
Elongation at Break, % 18
15
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 75
43
Tensile Strength: Ultimate (UTS), MPa 690
230
Tensile Strength: Yield (Proof), MPa 470
140

Thermal Properties

Latent Heat of Fusion, J/g 270
210
Melting Completion (Liquidus), °C 1450
1090
Melting Onset (Solidus), °C 1410
1040
Specific Heat Capacity, J/kg-K 470
390
Thermal Conductivity, W/m-K 25
380
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.0
98
Electrical Conductivity: Equal Weight (Specific), % IACS 8.1
99

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
31
Density, g/cm3 7.8
9.0
Embodied Carbon, kg CO2/kg material 2.6
2.6
Embodied Energy, MJ/kg 37
41
Embodied Water, L/kg 91
320

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
31
Resilience: Unit (Modulus of Resilience), kJ/m3 570
83
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 25
7.1
Strength to Weight: Bending, points 22
9.3
Thermal Diffusivity, mm2/s 6.9
110
Thermal Shock Resistance, points 19
8.1

Alloy Composition

Aluminum (Al), % 0 to 0.040
0
Bismuth (Bi), % 0
0 to 0.00050
Carbon (C), % 0.070 to 0.13
0
Chromium (Cr), % 8.0 to 10.5
0
Copper (Cu), % 0 to 0.2
99.95 to 99.998
Iron (Fe), % 84.4 to 90.7
0
Lead (Pb), % 0
0 to 0.0050
Manganese (Mn), % 0 to 1.2
0
Molybdenum (Mo), % 0.85 to 1.2
0
Nickel (Ni), % 0 to 0.8
0
Niobium (Nb), % 0.020 to 0.1
0
Nitrogen (N), % 0.030 to 0.070
0
Phosphorus (P), % 0 to 0.010
0.0020 to 0.0070
Silicon (Si), % 0.15 to 0.5
0
Silver (Ag), % 0
0 to 0.015
Sulfur (S), % 0 to 0.010
0
Vanadium (V), % 0.15 to 0.3
0
Residuals, % 0 to 0.5
0