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S17400 Stainless Steel vs. Grade CX2MW Nickel

S17400 stainless steel belongs to the iron alloys classification, while grade CX2MW nickel 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 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 S17400 stainless steel and the bottom bar is grade CX2MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 11 to 21
34
Fatigue Strength, MPa 380 to 670
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 75
84
Tensile Strength: Ultimate (UTS), MPa 910 to 1390
620
Tensile Strength: Yield (Proof), MPa 580 to 1250
350

Thermal Properties

Latent Heat of Fusion, J/g 280
330
Maximum Temperature: Mechanical, °C 850
980
Melting Completion (Liquidus), °C 1440
1550
Melting Onset (Solidus), °C 1400
1490
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 17
10
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 14
65
Density, g/cm3 7.8
8.9
Embodied Carbon, kg CO2/kg material 2.7
12
Embodied Energy, MJ/kg 39
170
Embodied Water, L/kg 130
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140 to 160
180
Resilience: Unit (Modulus of Resilience), kJ/m3 880 to 4060
290
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 32 to 49
19
Strength to Weight: Bending, points 27 to 35
18
Thermal Diffusivity, mm2/s 4.5
2.7
Thermal Shock Resistance, points 30 to 46
17

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.020
Chromium (Cr), % 15 to 17
20 to 22.5
Copper (Cu), % 3.0 to 5.0
0
Iron (Fe), % 70.4 to 78.9
2.0 to 6.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
12.5 to 14.5
Nickel (Ni), % 3.0 to 5.0
51.3 to 63
Niobium (Nb), % 0.15 to 0.45
0
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35