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AISI 440A Stainless Steel vs. CR012A Copper

AISI 440A stainless steel belongs to the iron alloys classification, while CR012A copper belongs to the copper alloys. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is AISI 440A stainless steel and the bottom bar is CR012A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 5.0 to 20
15
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
43
Tensile Strength: Ultimate (UTS), MPa 730 to 1790
220
Tensile Strength: Yield (Proof), MPa 420 to 1650
130

Thermal Properties

Latent Heat of Fusion, J/g 280
210
Maximum Temperature: Mechanical, °C 760
200
Melting Completion (Liquidus), °C 1480
1090
Melting Onset (Solidus), °C 1370
1040
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 23
390
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
100
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
33
Density, g/cm3 7.7
9.0
Embodied Carbon, kg CO2/kg material 2.2
2.7
Embodied Energy, MJ/kg 31
42
Embodied Water, L/kg 120
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 87 to 120
29
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 26 to 65
6.8
Strength to Weight: Bending, points 23 to 43
9.0
Thermal Diffusivity, mm2/s 6.2
110
Thermal Shock Resistance, points 26 to 65
7.8

Alloy Composition

Bismuth (Bi), % 0
0 to 0.00050
Carbon (C), % 0.6 to 0.75
0
Chromium (Cr), % 16 to 18
0
Copper (Cu), % 0
99.85 to 99.94
Iron (Fe), % 78.4 to 83.4
0
Manganese (Mn), % 0 to 1.0
0
Molybdenum (Mo), % 0 to 0.75
0
Oxygen (O), % 0
0 to 0.040
Phosphorus (P), % 0 to 0.040
0
Silicon (Si), % 0 to 1.0
0
Silver (Ag), % 0
0.060 to 0.080
Sulfur (S), % 0 to 0.015
0