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Grade M30H Nickel vs. Nickel 685

Both grade M30H nickel and nickel 685 are nickel alloys. They have 58% of their average alloy composition in common. There are 27 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 grade M30H nickel and the bottom bar is nickel 685.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 160
200
Elongation at Break, % 11
17
Fatigue Strength, MPa 230
470
Poisson's Ratio 0.32
0.29
Shear Modulus, GPa 61
77
Tensile Strength: Ultimate (UTS), MPa 770
1250
Tensile Strength: Yield (Proof), MPa 470
850

Thermal Properties

Latent Heat of Fusion, J/g 320
320
Maximum Temperature: Mechanical, °C 900
1000
Melting Completion (Liquidus), °C 1250
1380
Melting Onset (Solidus), °C 1200
1330
Specific Heat Capacity, J/kg-K 440
460
Thermal Conductivity, W/m-K 22
13
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 50
75
Density, g/cm3 8.6
8.4
Embodied Carbon, kg CO2/kg material 7.7
10
Embodied Energy, MJ/kg 110
140
Embodied Water, L/kg 250
340

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 75
190
Resilience: Unit (Modulus of Resilience), kJ/m3 700
1820
Stiffness to Weight: Axial, points 10
13
Stiffness to Weight: Bending, points 21
23
Strength to Weight: Axial, points 25
42
Strength to Weight: Bending, points 22
31
Thermal Diffusivity, mm2/s 5.7
3.3
Thermal Shock Resistance, points 27
37

Alloy Composition

Aluminum (Al), % 0
1.2 to 1.6
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.3
0.030 to 0.1
Chromium (Cr), % 0
18 to 21
Cobalt (Co), % 0
12 to 15
Copper (Cu), % 27 to 33
0 to 0.5
Iron (Fe), % 0 to 3.5
0 to 2.0
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 0
3.5 to 5.0
Nickel (Ni), % 57.9 to 70.3
49.6 to 62.5
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 2.7 to 3.7
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