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AISI 321H Stainless Steel vs. Nickel 333

AISI 321H stainless steel belongs to the iron alloys classification, while nickel 333 belongs to the nickel alloys. They have 47% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is AISI 321H stainless steel and the bottom bar is nickel 333.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 40
34
Fatigue Strength, MPa 200
200
Poisson's Ratio 0.28
0.28
Rockwell B Hardness 82
85
Shear Modulus, GPa 77
81
Shear Strength, MPa 400
420
Tensile Strength: Ultimate (UTS), MPa 580
630
Tensile Strength: Yield (Proof), MPa 230
270

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 940
1010
Melting Completion (Liquidus), °C 1430
1460
Melting Onset (Solidus), °C 1380
1410
Specific Heat Capacity, J/kg-K 480
450
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 16
55
Density, g/cm3 7.8
8.5
Embodied Carbon, kg CO2/kg material 3.2
8.5
Embodied Energy, MJ/kg 46
120
Embodied Water, L/kg 140
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
170
Resilience: Unit (Modulus of Resilience), kJ/m3 140
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 21
21
Strength to Weight: Bending, points 20
19
Thermal Diffusivity, mm2/s 4.0
2.9
Thermal Shock Resistance, points 12
16

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.1
Chromium (Cr), % 17 to 19
24 to 27
Cobalt (Co), % 0
2.5 to 4.0
Iron (Fe), % 65.4 to 74
9.3 to 24.5
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
2.5 to 4.0
Nickel (Ni), % 9.0 to 12
44 to 48
Phosphorus (P), % 0 to 0.045
0 to 0.030
Silicon (Si), % 0 to 0.75
0 to 1.5
Sulfur (S), % 0 to 0.030
0 to 0.030
Titanium (Ti), % 0 to 0.7
0
Tungsten (W), % 0
2.5 to 4.0