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ASTM Grade HT Steel vs. Grade CX2MW Nickel

ASTM grade HT steel belongs to the iron alloys classification, while grade CX2MW nickel belongs to the nickel alloys. They have 57% of their average alloy composition in common. 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 grade HT steel and the bottom bar is grade CX2MW nickel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
220
Elongation at Break, % 4.6
34
Fatigue Strength, MPa 130
260
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
84
Tensile Strength: Ultimate (UTS), MPa 500
620
Tensile Strength: Yield (Proof), MPa 270
350

Thermal Properties

Latent Heat of Fusion, J/g 310
330
Maximum Temperature: Mechanical, °C 1010
980
Melting Completion (Liquidus), °C 1390
1550
Melting Onset (Solidus), °C 1340
1490
Specific Heat Capacity, J/kg-K 480
430
Thermal Conductivity, W/m-K 12
10
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
1.5
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
1.5

Otherwise Unclassified Properties

Base Metal Price, % relative 31
65
Density, g/cm3 8.0
8.9
Embodied Carbon, kg CO2/kg material 5.4
12
Embodied Energy, MJ/kg 76
170
Embodied Water, L/kg 190
290

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
180
Resilience: Unit (Modulus of Resilience), kJ/m3 180
290
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18
19
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 3.2
2.7
Thermal Shock Resistance, points 12
17

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.020
Chromium (Cr), % 15 to 19
20 to 22.5
Iron (Fe), % 38.2 to 51.7
2.0 to 6.0
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
12.5 to 14.5
Nickel (Ni), % 33 to 37
51.3 to 63
Phosphorus (P), % 0 to 0.040
0 to 0.025
Silicon (Si), % 0 to 2.5
0 to 0.8
Sulfur (S), % 0 to 0.040
0 to 0.025
Tungsten (W), % 0
2.5 to 3.5
Vanadium (V), % 0
0 to 0.35