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EN 1.4469 Stainless Steel vs. Nickel 684

EN 1.4469 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have a modest 31% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is EN 1.4469 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 25
11
Fatigue Strength, MPa 380
390
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 81
76
Tensile Strength: Ultimate (UTS), MPa 740
1190
Tensile Strength: Yield (Proof), MPa 550
800

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1450
1370
Melting Onset (Solidus), °C 1400
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 21
75
Density, g/cm3 7.8
8.3
Embodied Carbon, kg CO2/kg material 4.1
10
Embodied Energy, MJ/kg 57
140
Embodied Water, L/kg 180
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 170
120
Resilience: Unit (Modulus of Resilience), kJ/m3 730
1610
Stiffness to Weight: Axial, points 15
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 26
40
Strength to Weight: Bending, points 23
30
Thermal Shock Resistance, points 20
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.030
0 to 0.15
Chromium (Cr), % 25 to 27
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0 to 1.3
0 to 0.15
Iron (Fe), % 56.4 to 65.9
0 to 4.0
Manganese (Mn), % 0 to 1.0
0 to 0.75
Molybdenum (Mo), % 3.0 to 5.0
3.0 to 5.0
Nickel (Ni), % 6.0 to 8.0
42.7 to 64
Nitrogen (N), % 0.12 to 0.22
0
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3