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ASTM Grade HT Steel vs. Type 3 Magnetic Alloy

ASTM grade HT steel belongs to the iron alloys classification, while Type 3 magnetic alloy belongs to the nickel alloys. They have 53% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HT steel and the bottom bar is Type 3 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
180
Elongation at Break, % 4.6
43
Fatigue Strength, MPa 130
170
Poisson's Ratio 0.28
0.31
Shear Modulus, GPa 76
70
Tensile Strength: Ultimate (UTS), MPa 500
550
Tensile Strength: Yield (Proof), MPa 270
210

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Mechanical, °C 1010
910
Melting Completion (Liquidus), °C 1390
1370
Melting Onset (Solidus), °C 1340
1320
Specific Heat Capacity, J/kg-K 480
450
Thermal Expansion, µm/m-K 15
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 1.7
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 1.9
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 31
55
Density, g/cm3 8.0
8.7
Embodied Carbon, kg CO2/kg material 5.4
8.7
Embodied Energy, MJ/kg 76
120
Embodied Water, L/kg 190
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 19
190
Resilience: Unit (Modulus of Resilience), kJ/m3 180
120
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 24
22
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
17
Thermal Shock Resistance, points 12
18

Alloy Composition

Carbon (C), % 0.35 to 0.75
0 to 0.050
Chromium (Cr), % 15 to 19
2.0 to 3.0
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
4.0 to 6.0
Iron (Fe), % 38.2 to 51.7
9.9 to 19
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0 to 0.5
Nickel (Ni), % 33 to 37
75 to 78
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 2.5
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.020