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EN 1.4971 Stainless Steel vs. Nickel 684

EN 1.4971 stainless steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. They have 60% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
310
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
11
Fatigue Strength, MPa 270
390
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
76
Shear Strength, MPa 530
710
Tensile Strength: Ultimate (UTS), MPa 800
1190
Tensile Strength: Yield (Proof), MPa 340
800

Thermal Properties

Latent Heat of Fusion, J/g 300
320
Maximum Temperature: Mechanical, °C 1100
1000
Melting Completion (Liquidus), °C 1460
1370
Melting Onset (Solidus), °C 1410
1320
Specific Heat Capacity, J/kg-K 450
470
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
75
Density, g/cm3 8.4
8.3
Embodied Carbon, kg CO2/kg material 7.6
10
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 300
360

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
120
Resilience: Unit (Modulus of Resilience), kJ/m3 280
1610
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 26
40
Strength to Weight: Bending, points 23
30
Thermal Shock Resistance, points 19
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.080 to 0.16
0 to 0.15
Chromium (Cr), % 20 to 22.5
15 to 20
Cobalt (Co), % 18.5 to 21
13 to 20
Copper (Cu), % 0
0 to 0.15
Iron (Fe), % 24.3 to 37.1
0 to 4.0
Manganese (Mn), % 0 to 2.0
0 to 0.75
Molybdenum (Mo), % 2.5 to 3.5
3.0 to 5.0
Nickel (Ni), % 19 to 21
42.7 to 64
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
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 0.015
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3
Tungsten (W), % 2.0 to 3.0
0