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Nickel 689 vs. ASTM Grade HT Steel

Nickel 689 belongs to the nickel alloys classification, while ASTM grade HT steel belongs to the iron alloys. They have 55% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is nickel 689 and the bottom bar is ASTM grade HT steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 350
150
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 23
4.6
Fatigue Strength, MPa 420
130
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 80
76
Tensile Strength: Ultimate (UTS), MPa 1250
500
Tensile Strength: Yield (Proof), MPa 690
270

Thermal Properties

Latent Heat of Fusion, J/g 330
310
Maximum Temperature: Mechanical, °C 990
1010
Melting Completion (Liquidus), °C 1440
1390
Melting Onset (Solidus), °C 1390
1340
Specific Heat Capacity, J/kg-K 450
480
Thermal Expansion, µm/m-K 12
15

Otherwise Unclassified Properties

Base Metal Price, % relative 70
31
Density, g/cm3 8.5
8.0
Embodied Carbon, kg CO2/kg material 11
5.4
Embodied Energy, MJ/kg 150
76
Embodied Water, L/kg 330
190

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
19
Resilience: Unit (Modulus of Resilience), kJ/m3 1170
180
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 41
18
Strength to Weight: Bending, points 30
18
Thermal Shock Resistance, points 35
12

Alloy Composition

Aluminum (Al), % 0.75 to 1.3
0
Boron (B), % 0.0030 to 0.010
0
Carbon (C), % 0.1 to 0.2
0.35 to 0.75
Chromium (Cr), % 18 to 20
15 to 19
Cobalt (Co), % 9.0 to 11
0
Iron (Fe), % 0 to 5.0
38.2 to 51.7
Manganese (Mn), % 0 to 0.5
0 to 2.0
Molybdenum (Mo), % 9.0 to 10.5
0 to 0.5
Nickel (Ni), % 48.3 to 60.9
33 to 37
Phosphorus (P), % 0 to 0.015
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 2.5
Sulfur (S), % 0 to 0.015
0 to 0.040
Titanium (Ti), % 2.3 to 2.8
0