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EN 1.4031 Stainless Steel vs. Nickel 685

EN 1.4031 stainless steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4031 stainless steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 13
17
Fatigue Strength, MPa 220 to 400
470
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
77
Shear Strength, MPa 400 to 540
770
Tensile Strength: Ultimate (UTS), MPa 670 to 900
1250
Tensile Strength: Yield (Proof), MPa 390 to 730
850

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 770
1000
Melting Completion (Liquidus), °C 1440
1380
Melting Onset (Solidus), °C 1400
1330
Specific Heat Capacity, J/kg-K 480
460
Thermal Conductivity, W/m-K 30
13
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 7.0
75
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 1.9
10
Embodied Energy, MJ/kg 27
140
Embodied Water, L/kg 100
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 94
190
Resilience: Unit (Modulus of Resilience), kJ/m3 380 to 1360
1820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 24 to 32
42
Strength to Weight: Bending, points 22 to 27
31
Thermal Diffusivity, mm2/s 8.1
3.3
Thermal Shock Resistance, points 23 to 32
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.36 to 0.42
0.030 to 0.1
Chromium (Cr), % 12.5 to 14.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 83 to 87.1
0 to 2.0
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0
49.6 to 62.5
Phosphorus (P), % 0 to 0.040
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12