We provide Standard and High-Quality Cast Iron Components.
Green sand casting is a low-cost means of producing many of the engineered components of today’s modern equipment and machinery. The practice of melting metal and pouring it into a desired shape dates back centuries. While the basic concept of sand casting hasn’t changed over time, the methods have.
Grey iron, commonly referred as cast iron, is the most common of the cast iron alloys. Relatively cheap and easy to produce, grey iron finds its way into a number of engineering applications where strength and toughness are not the primary concern. The graphite present in grey iron exists in flake form, which is the primary physical difference when comparing grey, compacted graphite, and ductile iron.
Ductile iron, sometimes referred to as nodular or spheroidal graphite iron, is a relative newcomer to the field of cast irons. Developed in the 1940’s, ductile iron has seen rapid and continued growth as a viable engineering material. With mechanical properties that compete with steels, ductile iron is being used more often as a cost savings tool in fabrication to casting conversion projects.
| ASTM A48 Grade | Ultimate Tensile Strength (UTS) | Brinell Hardness |
|---|---|---|
| Class 30 | 30,000 p.s.i | 187-241 |
| Class 35 | 35,000 p.s.i. | 207-255 |
| Class 40 | 40,000 p.s.i | 217-269 |
| Desirable properties | Common Applications |
|---|---|
| Excellent vibration dampening capability | Brake drums, rotors and clutch components |
| High compressive strength | Engine blocks, cylinder liners and heads |
| Good machinability | Pulleys, sheaves and idler wheels |
| Exceptional heat transfer | Gears |
| Low cost alternative to other engineering materials | Hydraulic valves and components |
| ASTM A536 Grade (SAE) | Tensile Strength | Yield Strengths | Elongation | Brinell Hardness |
|---|---|---|---|---|
| 60-40-18 (D4018) | 60,000 p.s.i. | 40,000 p.s.i. | 18 % | 187 Max |
| 65-45-12 (D4512) | 65,000 p.s.i | 45,000 p.s.i | 12 % | 156-217 |
| 80-55-06 (D5506) | 80,000 p.s.i. | 55,000 p.s.i. | 6 % | 187-255 |
| 100-70-03 (D7003) | 100,000 p.s.i | 70,000 p.s.i. | 3 % | 241-302 |
| Desirable properties | Common Applications |
|---|---|
| Strength comparable to some steels | Shaft and drive components |
| Ductility | Valve Bodies |
| Impact resistance | Couplers |
| Toughness | Lift arms and linkages |
| Low cost alternative to steel castings and fabrications | Brackets |
| Discs and digger teeth |