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AISI 321H Stainless Steel vs. C71500 Copper-nickel

AISI 321H stainless steel belongs to the iron alloys classification, while C71500 copper-nickel belongs to the copper alloys. There are 25 material properties with values for both materials. Properties with values for just one material (11, in this case) are not shown.

For each property being compared, the top bar is AISI 321H stainless steel and the bottom bar is C71500 copper-nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
140
Poisson's Ratio 0.28
0.33
Rockwell B Hardness 82
40 to 89
Shear Modulus, GPa 77
52
Tensile Strength: Ultimate (UTS), MPa 580
380 to 620

Thermal Properties

Latent Heat of Fusion, J/g 290
230
Maximum Temperature: Mechanical, °C 940
260
Melting Completion (Liquidus), °C 1430
1240
Melting Onset (Solidus), °C 1380
1170
Specific Heat Capacity, J/kg-K 480
400
Thermal Conductivity, W/m-K 15
28
Thermal Expansion, µm/m-K 17
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
4.6
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
4.7

Otherwise Unclassified Properties

Base Metal Price, % relative 16
41
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 3.2
5.1
Embodied Energy, MJ/kg 46
74
Embodied Water, L/kg 140
280

Common Calculations

Stiffness to Weight: Axial, points 14
8.6
Stiffness to Weight: Bending, points 25
19
Strength to Weight: Axial, points 21
12 to 19
Strength to Weight: Bending, points 20
13 to 18
Thermal Diffusivity, mm2/s 4.0
7.7
Thermal Shock Resistance, points 12
12 to 20

Alloy Composition

Carbon (C), % 0.040 to 0.1
0
Chromium (Cr), % 17 to 19
0
Copper (Cu), % 0
63.5 to 70.6
Iron (Fe), % 65.4 to 74
0.4 to 1.0
Lead (Pb), % 0
0 to 0.050
Manganese (Mn), % 0 to 2.0
0 to 1.0
Nickel (Ni), % 9.0 to 12
29 to 33
Phosphorus (P), % 0 to 0.045
0
Silicon (Si), % 0 to 0.75
0
Sulfur (S), % 0 to 0.030
0
Titanium (Ti), % 0 to 0.7
0
Zinc (Zn), % 0
0 to 1.0
Residuals, % 0
0 to 0.5