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Range of Compositions for Typical Unalloyed Cast Irons (Values in Percent %)
|
Type of Iron |
Carbon |
Silicon |
Manganese |
Sulfur |
Phosphorus |
|
Gray |
2.5 – 4.0 |
1.0 – 3.0 |
0.2 – 1.0 |
0.02 – 0.25 |
0.02 – 1.0 |
|
Ductile |
3.0 – 4.0 |
1.8 – 2.8 |
0.1 – 1.0 |
0.01 – 0.03 |
0.01 – 0.1 |
|
Compacted Graphite |
2.5 – 4.0 |
1.0 – 3.0 |
0.2 – 1.0 |
0.01 – 0.03 |
0.01 – 0.1 |
|
Malleable (Cast White) |
2.0 – 2.9 |
0.9 – 1.9 |
0.15 – 1.2 |
0.02 – 0.2 |
0.02 – 0.2 |
|
White |
1.8 – 3.6 |
0.5 – 1.9 |
0.25 – 0.8 |
0.06 – 0.2 |
0.06 – 0.2 |
|
|
Brinell Hardness |
Tensile Strength |
Modulus of Elasticity |
% Elongation (in 50 mm) |
|
Gray iron class 25 |
187 |
29.9 ksi |
16.1 Msi |
- |
|
Gray iron class 40 |
235 |
41.9 ksi |
18.2 Msi |
- |
|
Ductile iron grade 60-40-18 |
130 – 170 |
60 ksi |
24.5 Msi |
- |
|
Ductile iron grade 129-90-02 |
240 – 300 |
120 ksi |
25.5 Msi |
- |
|
CGI grade 250 |
179 max |
36.2 ksi min |
- |
3 |
|
CGI grade 450 |
207 – 269 |
65.2 ksi min |
- |
1 |
Gray Iron
Gray iron is the most commonly used type of cast iron. It is known for its excellent strength, wear resistance, and heat conductivity. Its microstructure contains graphite, which gives it a characteristic gray appearance and contributes to its ability to dampen vibrations and resist wear.
Ductile Iron
Ductile iron, also known as nodular iron or spheroidal graphite iron, offers superior ductility, toughness, and tensile strength compared to gray iron. Its graphite forms nodules, enhancing the material's impact resistance and making it ideal for applications that require strength and durability, such as automotive and heavy-duty equipment parts.
White Iron
White iron derives its name from the bright white fracture surface it presents. It is characterized by exceptional hardness, abrasion resistance, and high strength due to its carbide microstructure. White iron is highly resistant to wear and is used in harsh applications where resistance to abrasion and high strength are critical, such as in crushers and grinding mills.
Malleable Iron
Malleable cast iron is produced by heat-treating white iron to break down the iron carbide into free graphite. This process makes the material more ductile and malleable, with excellent fracture toughness, especially at low temperatures. Malleable iron is used in applications that require both strength and the ability to absorb impact without cracking, such as in automotive components and industrial machinery.
Brake discs for the automotive industry
Pump housings and impellers for fluid handling applications
Machine frames and bases for industrial machinery
Manhole covers for infrastructure projects
Agricultural equipment components
Ductile Iron Castings
Gearboxes and transmission components for agricultural machinery
Gears, pulleys, and sprockets for industrial power transmission systems
Pipe fittings and connectors for plumbing and irrigation systems
Heavy-duty construction equipment components
White Iron Castings
Wear-resistant crusher plates for mining and quarrying industries
Chute liners and wear plates for material handling equipment
Dredge pump components for slurry pumping applications
Shredder parts for recycling machinery
Malleable Iron Castings
Electrical fittings and connectors
Pipe fittings for plumbing systems
Automotive component
Farm Equipment
Pipe Fittings
Mining Hardware
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8618666626534
sales@shineycast.com