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AISI 431 Stainless Steel vs. CR011A Copper

AISI 431 stainless steel belongs to the iron alloys classification, while CR011A copper belongs to the copper alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is CR011A copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 15 to 17
15
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
43
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
220
Tensile Strength: Yield (Proof), MPa 710 to 1040
130

Thermal Properties

Latent Heat of Fusion, J/g 280
210
Maximum Temperature: Mechanical, °C 850
200
Melting Completion (Liquidus), °C 1510
1090
Melting Onset (Solidus), °C 1450
1040
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 26
390
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
100
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
100

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
32
Density, g/cm3 7.7
9.0
Embodied Carbon, kg CO2/kg material 2.2
2.6
Embodied Energy, MJ/kg 31
42
Embodied Water, L/kg 120
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
29
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
76
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 32 to 50
6.8
Strength to Weight: Bending, points 27 to 36
9.0
Thermal Diffusivity, mm2/s 7.0
110
Thermal Shock Resistance, points 28 to 43
7.8

Alloy Composition

Bismuth (Bi), % 0
0 to 0.00050
Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
99.88 to 99.97
Iron (Fe), % 78.2 to 83.8
0
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 1.3 to 2.5
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
0.030 to 0.050
Sulfur (S), % 0 to 0.030
0