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ASTM Grade HL Steel vs. Type 4 Magnetic Alloy

ASTM grade HL steel belongs to the iron alloys classification, while Type 4 magnetic alloy belongs to the nickel alloys. They have a modest 35% 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 (7, in this case) are not shown.

For each property being compared, the top bar is ASTM grade HL steel and the bottom bar is Type 4 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11
2.0 to 40
Fatigue Strength, MPa 150
220 to 400
Poisson's Ratio 0.27
0.31
Shear Modulus, GPa 80
73
Tensile Strength: Ultimate (UTS), MPa 500
620 to 1100
Tensile Strength: Yield (Proof), MPa 270
270 to 1040

Thermal Properties

Latent Heat of Fusion, J/g 320
290
Maximum Temperature: Mechanical, °C 1100
900
Melting Completion (Liquidus), °C 1390
1420
Melting Onset (Solidus), °C 1340
1370
Specific Heat Capacity, J/kg-K 490
440
Thermal Expansion, µm/m-K 17
11

Otherwise Unclassified Properties

Base Metal Price, % relative 27
60
Density, g/cm3 7.8
8.8
Embodied Carbon, kg CO2/kg material 4.5
10
Embodied Energy, MJ/kg 65
140
Embodied Water, L/kg 210
210

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 48
22 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 180
190 to 2840
Stiffness to Weight: Axial, points 14
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 18
19 to 35
Strength to Weight: Bending, points 18
18 to 27
Thermal Shock Resistance, points 11
21 to 37

Alloy Composition

Carbon (C), % 0.2 to 0.6
0 to 0.050
Chromium (Cr), % 28 to 32
0 to 0.3
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
0 to 0.3
Iron (Fe), % 40.8 to 53.8
9.5 to 17.5
Manganese (Mn), % 0 to 2.0
0 to 0.8
Molybdenum (Mo), % 0 to 0.5
3.5 to 6.0
Nickel (Ni), % 18 to 22
79 to 82
Phosphorus (P), % 0 to 0.040
0 to 0.010
Silicon (Si), % 0 to 2.0
0 to 0.5
Sulfur (S), % 0 to 0.040
0 to 0.020