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Nickel 684 vs. EN 1.4948 Stainless Steel

Nickel 684 belongs to the nickel alloys classification, while EN 1.4948 stainless steel belongs to the iron alloys. They have a modest 30% 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 (8, in this case) are not shown.

For each property being compared, the top bar is nickel 684 and the bottom bar is EN 1.4948 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 310
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11
48
Fatigue Strength, MPa 390
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 710
430
Tensile Strength: Ultimate (UTS), MPa 1190
610
Tensile Strength: Yield (Proof), MPa 800
210

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1000
930
Melting Completion (Liquidus), °C 1370
1430
Melting Onset (Solidus), °C 1320
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 75
15
Density, g/cm3 8.3
7.8
Embodied Carbon, kg CO2/kg material 10
3.0
Embodied Energy, MJ/kg 140
43
Embodied Water, L/kg 360
140

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
230
Resilience: Unit (Modulus of Resilience), kJ/m3 1610
110
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
25
Strength to Weight: Axial, points 40
22
Strength to Weight: Bending, points 30
21
Thermal Shock Resistance, points 34
14

Alloy Composition

Aluminum (Al), % 2.5 to 3.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0 to 0.15
0.040 to 0.080
Chromium (Cr), % 15 to 20
17 to 19
Cobalt (Co), % 13 to 20
0
Copper (Cu), % 0 to 0.15
0
Iron (Fe), % 0 to 4.0
66.8 to 75
Manganese (Mn), % 0 to 0.75
0 to 2.0
Molybdenum (Mo), % 3.0 to 5.0
0
Nickel (Ni), % 42.7 to 64
8.0 to 11
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.015
0 to 0.035
Silicon (Si), % 0 to 0.75
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 2.5 to 3.3
0