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Grade TDSiCr Steel vs. Nickel 684

Grade TDSiCr steel belongs to the iron alloys classification, while nickel 684 belongs to the nickel alloys. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is grade TDSiCr steel and the bottom bar is nickel 684.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 590
310
Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Reduction in Area, % 48
17
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 1950
1190

Thermal Properties

Latent Heat of Fusion, J/g 270
320
Maximum Temperature: Mechanical, °C 410
1000
Melting Completion (Liquidus), °C 1440
1370
Melting Onset (Solidus), °C 1400
1320
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 2.2
75
Density, g/cm3 7.7
8.3
Embodied Carbon, kg CO2/kg material 1.5
10
Embodied Energy, MJ/kg 20
140
Embodied Water, L/kg 48
360

Common Calculations

Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 70
40
Strength to Weight: Bending, points 45
30
Thermal Shock Resistance, points 58
34

Alloy Composition

Aluminum (Al), % 0
2.5 to 3.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0.5 to 0.6
0 to 0.15
Chromium (Cr), % 0.5 to 0.8
15 to 20
Cobalt (Co), % 0
13 to 20
Copper (Cu), % 0 to 0.1
0 to 0.15
Iron (Fe), % 96.6 to 97.8
0 to 4.0
Manganese (Mn), % 0.5 to 0.9
0 to 0.75
Molybdenum (Mo), % 0
3.0 to 5.0
Nickel (Ni), % 0
42.7 to 64
Phosphorus (P), % 0 to 0.025
0 to 0.015
Silicon (Si), % 1.2 to 1.6
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.015
Titanium (Ti), % 0
2.5 to 3.3