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AISI 202 Stainless Steel vs. Nickel 684

AISI 202 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 25% of their average alloy composition in common, which, by itself, doesn't mean much. There are 27 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 202 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 300
310
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14 to 45
11
Fatigue Strength, MPa 290 to 330
390
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
76
Shear Strength, MPa 490 to 590
710
Tensile Strength: Ultimate (UTS), MPa 700 to 980
1190
Tensile Strength: Yield (Proof), MPa 310 to 580
800

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Mechanical, °C 910
1000
Melting Completion (Liquidus), °C 1400
1370
Melting Onset (Solidus), °C 1360
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 17
13

Otherwise Unclassified Properties

Base Metal Price, % relative 13
75
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 2.8
10
Embodied Energy, MJ/kg 40
140
Embodied Water, L/kg 150
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 260
120
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 840
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 25 to 35
40
Strength to Weight: Bending, points 23 to 29
30
Thermal Shock Resistance, points 15 to 21
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.15
0 to 0.15
Chromium (Cr), % 17 to 19
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 63.5 to 71.5
0 to 4.0
Manganese (Mn), % 7.5 to 10
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 4.0 to 6.0
42.7 to 64
Nitrogen (N), % 0 to 0.25
0
Phosphorus (P), % 0 to 0.060
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3