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ASTM Grade HI Steel vs. N06920 Nickel

ASTM grade HI steel belongs to the iron alloys classification, while N06920 nickel belongs to the nickel alloys. They have 58% of their average alloy composition in common. There are 29 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 ASTM grade HI steel and the bottom bar is N06920 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 11
39
Fatigue Strength, MPa 150
220
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 79
82
Tensile Strength: Ultimate (UTS), MPa 550
730
Tensile Strength: Yield (Proof), MPa 270
270

Thermal Properties

Latent Heat of Fusion, J/g 310
320
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1400
1500
Melting Onset (Solidus), °C 1350
1440
Specific Heat Capacity, J/kg-K 490
440
Thermal Conductivity, W/m-K 15
11
Thermal Expansion, µm/m-K 17
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.1
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.4
1.6

Otherwise Unclassified Properties

Base Metal Price, % relative 23
55
Density, g/cm3 7.8
8.6
Embodied Carbon, kg CO2/kg material 4.1
9.4
Embodied Energy, MJ/kg 59
130
Embodied Water, L/kg 200
270

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 52
230
Resilience: Unit (Modulus of Resilience), kJ/m3 180
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
23
Strength to Weight: Axial, points 20
24
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 3.9
2.8
Thermal Shock Resistance, points 12
19

Alloy Composition

Carbon (C), % 0.2 to 0.5
0 to 0.030
Chromium (Cr), % 26 to 30
20.5 to 23
Cobalt (Co), % 0
0 to 5.0
Iron (Fe), % 46.9 to 59.8
17 to 20
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
8.0 to 10
Nickel (Ni), % 14 to 18
36.9 to 53.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.0
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Tungsten (W), % 0
1.0 to 3.0