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ASTM Grade HT Steel vs. Nickel 689

ASTM grade HT steel belongs to the iron alloys classification, while nickel 689 belongs to the nickel 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 ASTM grade HT steel and the bottom bar is nickel 689.

Metric UnitsUS Customary Units

Mechanical Properties

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

Thermal Properties

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

Otherwise Unclassified Properties

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

Common Calculations

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

Alloy Composition

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