Ductile Iron ASTM A536

Ductile Iron Castings – Pacific Alloy Casting, Los Angeles, California

Specification for Ductile Iron Castings – ASTM A-536

Ductile iron is cast iron whose graphite is in the form of spherical nodules making it more flexible and elastic than other cast irons. These improvements to the mechanical properties allow DI to be used in a wider range of casting applications than standard gray iron. DI has also replaced steel castings in some applications providing a lower-cost alternative.

An example is the DI crankshaft currently used in all but ultra-high performance automotive engines. Formerly the crankshaft was made from a costly steel casting. The high stress involved in this application did not permit the use of gray iron. The invention of DI and its superior strength was the perfect balance between a costly steel casting and low-strength gray iron for the crankshaft.

If your company needs Ductile Iron Castings, call Pacific Alloy Casting Co. at (562) 928-1387 or email sales@pacificalloy.com for a prompt quote.


Austempered Ductile Iron Castings from Pacific Alloy, Los Angeles, CA

Austempered Ductile Iron Castings – ASTM A-897A

Austempered ductile iron is produced by heat-treating cast ductile iron to which small amounts of nickel, molybdenum or copper have been added. The result is a product that has twice the tensile and yield strengths and 50 percent higher fatigue strength than standard ductile irons.

The lower hardness grades of ADI work well in structural applications where weight and cost reduction are important. The higher hardness grades of ADI are ideal for wear applications such as mining, construction and agriculture.

ADI can be used as a substitute for manganese steel and nickel-chrome iron. It is stronger than aluminum and weighs less. It is lighter and easier to cast than steel and costs less to produce.

Another advantage of ADI is its machinability. It can be machined in the soft as-cast or annealed state before being heat treated saving time and money.

If your company needs Austempered Ductile Iron castings, call Pacific Alloy Casting Co. at (562) 928-1387 or email sales@pacificalloy.com for a prompt quote.


Austenitic Ductile Iron Castings from Pacific Alloy, Los Angeles, CA

Austenitic Ductile Iron Castings – ASTM A-439

Austenitic ductile iron was developed to meet the demands of conditions that are too severe for conventional or austempered ductile irons. The high nickel content in austenitic ductile iron in conjunction with chromium in certain grades provides superior resistance to heat, corrosion and wear.

It also is characterized by good strength, ductility and resistance to oxidation at high temperatures, low temperature stability, controlled thermal expansion and good castability and machinability.

Applications include: valve and pump bodies in petroleum, salt water and caustic service, manifolds, turbocharger housings and air compressor parts.

If your company needs Austenitic Ductile Iron Castings please call Pacific Alloy Casting Co. at (562) 928-1387 or email sales@pacificalloy.com for a prompt quote.

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