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AISI 429 Stainless Steel vs. Nickel 685

AISI 429 stainless steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. There are 30 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 AISI 429 stainless steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 160
350
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25
17
Fatigue Strength, MPa 180
470
Poisson's Ratio 0.28
0.29
Reduction in Area, % 50
20
Shear Modulus, GPa 77
77
Shear Strength, MPa 300
770
Tensile Strength: Ultimate (UTS), MPa 480
1250
Tensile Strength: Yield (Proof), MPa 260
850

Thermal Properties

Latent Heat of Fusion, J/g 280
320
Maximum Temperature: Mechanical, °C 810
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 26
13
Thermal Expansion, µm/m-K 10
12

Otherwise Unclassified Properties

Base Metal Price, % relative 7.5
75
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 2.0
10
Embodied Energy, MJ/kg 28
140
Embodied Water, L/kg 110
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 99
190
Resilience: Unit (Modulus of Resilience), kJ/m3 170
1820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 17
42
Strength to Weight: Bending, points 18
31
Thermal Diffusivity, mm2/s 6.9
3.3
Thermal Shock Resistance, points 17
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.12
0.030 to 0.1
Chromium (Cr), % 14 to 16
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 81.8 to 86
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 0.030
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12