MakeItFrom.com
Menu (ESC)

Grade 20 Cast Iron vs. Type 3 Magnetic Alloy

Grade 20 cast iron belongs to the iron alloys classification, while Type 3 magnetic alloy belongs to the nickel alloys. 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 grade 20 cast iron and the bottom bar is Type 3 magnetic alloy.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 180
180
Elongation at Break, % 9.6
43
Fatigue Strength, MPa 69
170
Poisson's Ratio 0.29
0.31
Shear Modulus, GPa 69
70
Shear Strength, MPa 180
380
Tensile Strength: Ultimate (UTS), MPa 160
550
Tensile Strength: Yield (Proof), MPa 98
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Melting Completion (Liquidus), °C 1380
1370
Melting Onset (Solidus), °C 1180
1320
Specific Heat Capacity, J/kg-K 490
450
Thermal Expansion, µm/m-K 11
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 8.9
3.0

Otherwise Unclassified Properties

Base Metal Price, % relative 1.9
55
Density, g/cm3 7.5
8.7
Embodied Carbon, kg CO2/kg material 1.5
8.7
Embodied Energy, MJ/kg 21
120
Embodied Water, L/kg 44
220

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 13
190
Resilience: Unit (Modulus of Resilience), kJ/m3 27
120
Stiffness to Weight: Axial, points 13
12
Stiffness to Weight: Bending, points 25
22
Strength to Weight: Axial, points 5.8
18
Strength to Weight: Bending, points 8.7
17
Thermal Shock Resistance, points 6.0
18

Alloy Composition

Carbon (C), % 3.1 to 3.4
0 to 0.050
Chromium (Cr), % 0
2.0 to 3.0
Cobalt (Co), % 0
0 to 0.5
Copper (Cu), % 0
4.0 to 6.0
Iron (Fe), % 92.1 to 93.9
9.9 to 19
Manganese (Mn), % 0.5 to 0.7
0 to 1.5
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 0
75 to 78
Phosphorus (P), % 0 to 0.9
0 to 0.010
Silicon (Si), % 2.5 to 2.8
0 to 0.5
Sulfur (S), % 0 to 0.15
0 to 0.020