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AISI 431 Stainless Steel vs. C12200 Copper

AISI 431 stainless steel belongs to the iron alloys classification, while C12200 copper belongs to the copper alloys. There are 29 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is AISI 431 stainless steel and the bottom bar is C12200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 15 to 17
3.2 to 50
Poisson's Ratio 0.28
0.34
Shear Modulus, GPa 77
43
Shear Strength, MPa 550 to 840
150 to 240
Tensile Strength: Ultimate (UTS), MPa 890 to 1380
220 to 410
Tensile Strength: Yield (Proof), MPa 710 to 1040
69 to 400

Thermal Properties

Latent Heat of Fusion, J/g 280
210
Maximum Temperature: Mechanical, °C 850
200
Melting Completion (Liquidus), °C 1510
1080
Melting Onset (Solidus), °C 1450
1030
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 26
340
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.6
85
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
85

Otherwise Unclassified Properties

Base Metal Price, % relative 9.0
31
Density, g/cm3 7.7
9.0
Embodied Carbon, kg CO2/kg material 2.2
2.6
Embodied Energy, MJ/kg 31
41
Embodied Water, L/kg 120
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 180
11 to 91
Resilience: Unit (Modulus of Resilience), kJ/m3 1270 to 2770
21 to 690
Stiffness to Weight: Axial, points 14
7.2
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 32 to 50
6.9 to 13
Strength to Weight: Bending, points 27 to 36
9.1 to 14
Thermal Diffusivity, mm2/s 7.0
98
Thermal Shock Resistance, points 28 to 43
7.9 to 15

Alloy Composition

Carbon (C), % 0 to 0.2
0
Chromium (Cr), % 15 to 17
0
Copper (Cu), % 0
99.9 to 99.985
Iron (Fe), % 78.2 to 83.8
0
Manganese (Mn), % 0 to 1.0
0
Nickel (Ni), % 1.3 to 2.5
0
Phosphorus (P), % 0 to 0.040
0.015 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.030
0