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ASTM A356 Grade 9 vs. Grade CW6MC Nickel

ASTM A356 grade 9 belongs to the iron alloys classification, while grade CW6MC nickel belongs to the nickel alloys. There are 29 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is ASTM A356 grade 9 and the bottom bar is grade CW6MC nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 17
28
Fatigue Strength, MPa 310
210
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
79
Tensile Strength: Ultimate (UTS), MPa 670
540
Tensile Strength: Yield (Proof), MPa 460
310

Thermal Properties

Latent Heat of Fusion, J/g 260
330
Maximum Temperature: Mechanical, °C 440
980
Melting Completion (Liquidus), °C 1470
1480
Melting Onset (Solidus), °C 1430
1430
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 41
11
Thermal Expansion, µm/m-K 13
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.5
1.3
Electrical Conductivity: Equal Weight (Specific), % IACS 8.6
1.4

Otherwise Unclassified Properties

Base Metal Price, % relative 3.6
80
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 2.4
14
Embodied Energy, MJ/kg 33
200
Embodied Water, L/kg 56
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
130
Resilience: Unit (Modulus of Resilience), kJ/m3 570
240
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
17
Thermal Diffusivity, mm2/s 11
2.8
Thermal Shock Resistance, points 19
15

Alloy Composition

Carbon (C), % 0 to 0.2
0 to 0.060
Chromium (Cr), % 1.0 to 1.5
20 to 23
Iron (Fe), % 95.2 to 97.2
0 to 5.0
Manganese (Mn), % 0.5 to 0.9
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.2
8.0 to 10
Nickel (Ni), % 0
55.4 to 68.9
Niobium (Nb), % 0
3.2 to 4.5
Phosphorus (P), % 0 to 0.035
0 to 0.015
Silicon (Si), % 0.2 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.030
Vanadium (V), % 0.2 to 0.35
0