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ASTM Grade HT Steel vs. N08120 Nickel

Both ASTM grade HT steel and N08120 nickel are metals with high concentrations of iron and nickel. This makes them relatively similar, despite formally belonging to different alloy families. They have 85% of their average alloy composition in common. There are 28 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 ASTM grade HT steel and the bottom bar is N08120 nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 4.6
34
Fatigue Strength, MPa 130
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
79
Tensile Strength: Ultimate (UTS), MPa 500
700
Tensile Strength: Yield (Proof), MPa 270
310

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Mechanical, °C 1010
1000
Melting Completion (Liquidus), °C 1390
1420
Melting Onset (Solidus), °C 1340
1370
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 12
11
Thermal Expansion, µm/m-K 15
14

Otherwise Unclassified Properties

Base Metal Price, % relative 31
45
Density, g/cm3 8.0
8.2
Embodied Carbon, kg CO2/kg material 5.4
7.2
Embodied Energy, MJ/kg 76
100
Embodied Water, L/kg 190
240

Common Calculations

PREN (Pitting Resistance) 18
35
Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
190
Resilience: Unit (Modulus of Resilience), kJ/m3 180
240
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 18
24
Strength to Weight: Bending, points 18
21
Thermal Diffusivity, mm2/s 3.2
3.0
Thermal Shock Resistance, points 12
17

Alloy Composition

Aluminum (Al), % 0
0 to 0.4
Boron (B), % 0
0 to 0.010
Carbon (C), % 0.35 to 0.75
0.020 to 0.1
Chromium (Cr), % 15 to 19
23 to 27
Cobalt (Co), % 0
0 to 3.0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 38.2 to 51.7
21 to 41.4
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0 to 2.5
Nickel (Ni), % 33 to 37
35 to 39
Niobium (Nb), % 0
0.4 to 0.9
Nitrogen (N), % 0
0.15 to 0.3
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 2.5
0 to 1.0
Sulfur (S), % 0 to 0.040
0 to 0.030
Titanium (Ti), % 0
0 to 0.2
Tungsten (W), % 0
0 to 2.5