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AISI 321H Stainless Steel vs. C18200 Copper

AISI 321H stainless steel belongs to the iron alloys classification, while C18200 copper belongs to the copper alloys. There are 30 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 321H stainless steel and the bottom bar is C18200 copper.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
120
Elongation at Break, % 40
11 to 40
Poisson's Ratio 0.28
0.34
Rockwell B Hardness 82
65 to 82
Shear Modulus, GPa 77
44
Shear Strength, MPa 400
210 to 320
Tensile Strength: Ultimate (UTS), MPa 580
310 to 530
Tensile Strength: Yield (Proof), MPa 230
97 to 450

Thermal Properties

Latent Heat of Fusion, J/g 290
210
Maximum Temperature: Mechanical, °C 940
200
Melting Completion (Liquidus), °C 1430
1080
Melting Onset (Solidus), °C 1380
1070
Specific Heat Capacity, J/kg-K 480
390
Thermal Conductivity, W/m-K 15
320
Thermal Expansion, µm/m-K 17
18

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
80
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
81

Otherwise Unclassified Properties

Base Metal Price, % relative 16
31
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.2
2.6
Embodied Energy, MJ/kg 46
41
Embodied Water, L/kg 140
310

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
43 to 96
Resilience: Unit (Modulus of Resilience), kJ/m3 140
40 to 860
Stiffness to Weight: Axial, points 14
7.3
Stiffness to Weight: Bending, points 25
18
Strength to Weight: Axial, points 21
9.6 to 16
Strength to Weight: Bending, points 20
11 to 16
Thermal Diffusivity, mm2/s 4.0
93
Thermal Shock Resistance, points 12
11 to 18

Alloy Composition

Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 17 to 19
0.6 to 1.2
Copper (Cu), % 0
98.6 to 99.4
Iron (Fe), % 65.4 to 74
0 to 0.1
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0
Nickel (Ni), % 9.0 to 12
0
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0 to 0.1
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.7
0