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S30600 Stainless Steel vs. Nickel 685

S30600 stainless steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. They have a modest 35% of their average alloy composition in common, which, by itself, doesn't mean much. There are 30 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is S30600 stainless steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
350
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 45
17
Fatigue Strength, MPa 250
470
Poisson's Ratio 0.28
0.29
Reduction in Area, % 56
20
Shear Modulus, GPa 76
77
Shear Strength, MPa 430
770
Tensile Strength: Ultimate (UTS), MPa 610
1250
Tensile Strength: Yield (Proof), MPa 270
850

Thermal Properties

Latent Heat of Fusion, J/g 350
320
Maximum Temperature: Mechanical, °C 950
1000
Melting Completion (Liquidus), °C 1380
1380
Melting Onset (Solidus), °C 1330
1330
Specific Heat Capacity, J/kg-K 490
460
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 16
12

Otherwise Unclassified Properties

Base Metal Price, % relative 19
75
Density, g/cm3 7.6
8.4
Embodied Carbon, kg CO2/kg material 3.6
10
Embodied Energy, MJ/kg 51
140
Embodied Water, L/kg 150
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
190
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1820
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 22
42
Strength to Weight: Bending, points 21
31
Thermal Diffusivity, mm2/s 3.7
3.3
Thermal Shock Resistance, points 14
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.018
0.030 to 0.1
Chromium (Cr), % 17 to 18.5
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.5
0 to 0.5
Iron (Fe), % 58.9 to 65.3
0 to 2.0
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.2
3.5 to 5.0
Nickel (Ni), % 14 to 15.5
49.6 to 62.5
Phosphorus (P), % 0 to 0.020
0 to 0.030
Silicon (Si), % 3.7 to 4.3
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Zinc (Zn), % 0
0.020 to 0.12