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DUCTILE IRON CASTINGS
We represent the best ductile iron foundries in the USA and
back it up with professional and ongoing service.
Carson Castings (Foundry-Source.com) specializes in
ductile iron and ADI sand castings weighing 1# to 5000# and up to 120”x120”
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Inside view of melting furnace control
room at a casting foundry |
* Expertise in our field - We deal strictly in the sourcing of castings and machined
castings. Highly specialized in ductile iron.
* Added Value - We can provide raw castings or complete assemblies and
everything in between (painting, heat treat and machining).
* Tooling Options – No-bake and green sand molding. Floor, manual, squeezer,
cope and drag, Hunter, Sinto and Disa molding processes.
* Industry Knowledge - Our years of experience in the casting field ensure we
place your work at a facility suited to your project’s unique needs.
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Adjuster Collar
8lbs. |
Brake Spider
14lbs. |
Connection 5lbs. |
Contact Matt today at 419-891-2231 or info@foundry-source.com
for a hassle-free, no-obligation quote.
Ductile iron, a family
of versatile cast irons, offers the design engineer
versatility. Its mechanical properties – strength,
wear resistance, fatigue strength, toughness and ductility
- are competitive with many cast, forged, and fabricated
steel products, yet the result, in most cases, is lower
cost and better looking parts. Ductile iron’s
ease of maching and economy of production are almost
equal to gray iron. The use of ductile iron has grown
rapidly in the past 40 years, mainly through conversions
from gray and malleable iron castings, steel castings,
forgings and fabrications, and also through its use
in new components designed with ductile iron.
Ductile Iron |
Standard Specifications
• ASTM A395 & ASME SA395: ferritic ductile iron pressure-retaining castings for
use at elevated temperatures
• ASTM A439: austenitic ductile iron castings
• ASTM A476 & ASME SA476: ductile iron castings for paper mill dryer rolls
• ASTM A536 & SAE J434: ductile iron castings
• ASTM A571 & ASME SA571: austenitic ductile iron castings for
pressure-containing parts suitable for low-temperature service
• ASTM A874: ferritic ductile iron castings suitable for low-temperature service
• ASTM A897: austempered ductile iron castings |
Characteristics
Several grades for both
strength & ductility; high
strength, ductility & wear
resistance; contact fatigue
resistance; ability to
withstand thermal cycling;
and production of fracturecritical
components. |
Applications
Steering knuckles; plow
shares; gears; automotive &
truck suspension components;
brake components; valves;
pumps; linkages; hydraulic
components; and wind
turbine housings. |
Malleable iron—In malleable iron, the graphite occurs as irregularly shaped nodules called temper carbon because it is formed in the solid state during heat treatment. The iron is cast as a white iron of a suitable chemical composition to respond to the malleabilizing heat treatment.
Malleable iron is ideal for thin-sectioned components that require ductility. Ferritic malleable iron is produced to a lower strength range than pearlitic malleable iron but with higher ductility. It is the most machinable of cast irons, and it can be die-strengthened or coined to bring key dimensions to close tolerance limits. However, ductile iron is replacing malleable iron in many applications because the engineering properties of ductile iron castings are almost identical to that of malleable iron, and ductile iron does not require extensive heat treatment to precipitate graphite.
Malleable Iron |
Standard Specifications
• ASTM A47 & ASME SA47: ferritic malleable iron castings
• ASTM A197: cupola malleable iron
• ASTM A220: pearlitic malleable iron
• ASTM A338: malleable iron flanges, pipe fittings & valve parts for railroad,
marine & other heavy-duty service up to 650F (343C)
• ASTM A602 & SAE J158: automotive malleable iron castings |
Characteristics
Soft & extremely ductile. |
Applications
Chains; sprockets; tool parts & hardware; connecting rods; drive train & axle components;
and spring suspensions. |
Download our
Ductile Iron Brochure
Ductile Castings Gallery
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Conveyor Component
4lbs. |
Crankshaft 3lbs. |
Gear Housing
15lbs. |
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Handel 2lbs. |
Link Pin 4lbs. |
Pillow Block
6lbs. |
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Piston Cover
2lbs. |
Shaft and Hub
Assembly 9lbs. |
Shift Fork 1lbs. |
Ductile iron – An unusual combination of properties is obtained in ductile cast iron because the graphite occurs as spheroids rather than as flakes. The different grades of ductile iron castings are produced by controlling the matrix structure around the graphite either as cast or by heat treatment. Only minor compositional differences (to promote the desired matrix microstructure) exist among the regular grades. Alloy additions may be made to assist in controlling the matrix structure as-cast or to provide response to heat treatment.
The high-strength grades can be quenched and tempered by austempering. Austempered ductile iron (ADI) provides twice the strength of conventional ductile iron at a given level of ductility. ADI can have strength in excess of 230 ksi (1,586 MPa); however, its modulus is 20% lower than steel with a comparable strength.
Ductile iron has the ability to be used as-cast and without heat treatments or other further refining. It has a tensile strength comparable to many steel alloys and a modulus of elasticity between that of gray iron and steel. As its name implies, it has a high degree of ductility. It can be cast in a wide range of casting sizes and section thickness; however, thinner sections may require annealing to obtain high ductility. Alloy additions may be needed to obtain the higher-strength grades in heavy sections.
Download our
Ductile Iron Brochure
Ductile Iron Casting Properties
Nodular Iron Castings
Foundry - Foundry Source
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