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Grade FDSiCrV Steel vs. Nickel 685

Grade FDSiCrV steel belongs to the iron alloys classification, while nickel 685 belongs to the nickel alloys. There are 24 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 grade FDSiCrV steel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 630
350
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Reduction in Area, % 42
20
Shear Modulus, GPa 80
77
Tensile Strength: Ultimate (UTS), MPa 2100
1250

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 420
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 47
13
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 2.3
75
Density, g/cm3 7.7
8.4
Embodied Carbon, kg CO2/kg material 1.9
10
Embodied Energy, MJ/kg 26
140
Embodied Water, L/kg 50
340

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 75
42
Strength to Weight: Bending, points 47
31
Thermal Diffusivity, mm2/s 13
3.3
Thermal Shock Resistance, points 63
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.5 to 0.7
0.030 to 0.1
Chromium (Cr), % 0.5 to 1.0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 0 to 0.12
0 to 0.5
Iron (Fe), % 96 to 97.8
0 to 2.0
Manganese (Mn), % 0.4 to 0.9
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 0
49.6 to 62.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 1.2 to 1.7
0 to 0.75
Sulfur (S), % 0 to 0.025
0 to 0.030
Titanium (Ti), % 0
2.8 to 3.3
Vanadium (V), % 0.1 to 0.25
0
Zinc (Zn), % 0
0.020 to 0.12