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ASTM Grade HD Steel vs. Nickel 689

ASTM grade HD steel belongs to the iron alloys classification, while nickel 689 belongs to the nickel alloys. They have a modest 28% of their average alloy composition in common, which, by itself, doesn't mean much. There are 25 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 9.1
23
Fatigue Strength, MPa 140
420
Poisson's Ratio 0.27
0.29
Shear Modulus, GPa 80
80
Tensile Strength: Ultimate (UTS), MPa 590
1250
Tensile Strength: Yield (Proof), MPa 270
690

Thermal Properties

Latent Heat of Fusion, J/g 310
330
Maximum Temperature: Mechanical, °C 1100
990
Melting Completion (Liquidus), °C 1410
1440
Melting Onset (Solidus), °C 1370
1390
Specific Heat Capacity, J/kg-K 490
450
Thermal Expansion, µm/m-K 11
12

Otherwise Unclassified Properties

Base Metal Price, % relative 17
70
Density, g/cm3 7.7
8.5
Embodied Carbon, kg CO2/kg material 3.1
11
Embodied Energy, MJ/kg 45
150
Embodied Water, L/kg 180
330

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 44
240
Resilience: Unit (Modulus of Resilience), kJ/m3 180
1170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 26
23
Strength to Weight: Axial, points 21
41
Strength to Weight: Bending, points 20
30
Thermal Shock Resistance, points 19
35

Alloy Composition

Aluminum (Al), % 0
0.75 to 1.3
Boron (B), % 0
0.0030 to 0.010
Carbon (C), % 0 to 0.5
0.1 to 0.2
Chromium (Cr), % 26 to 30
18 to 20
Cobalt (Co), % 0
9.0 to 11
Iron (Fe), % 58.4 to 70
0 to 5.0
Manganese (Mn), % 0 to 1.5
0 to 0.5
Molybdenum (Mo), % 0 to 0.5
9.0 to 10.5
Nickel (Ni), % 4.0 to 7.0
48.3 to 60.9
Phosphorus (P), % 0 to 0.040
0 to 0.015
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.015
Titanium (Ti), % 0
2.3 to 2.8