Find grey iron castings including ductile iron castings, gray iron castings, grey cast iron and more. Use the time-saving Request for Quote tool to submit your inquiry to all the grey iron casting manufacturers and suppliers you select.
Founded in 1937, Kurdziel Industries is an international supplier of products, including gray iron castings and ductile iron castings, for industries such as agriculture, appliance, automotive, special machinery and more. We are constantly expanding our capabilities in order to meet customer needs.
Since 1946, Plymouth Foundry has produced ductile iron castings, gray iron castings and white iron parts plus machined them. We cast objects from mere ounces to 350 pounds. To execute the machining we use our broaching, drilling, grinding, milling and turning machines. Scrap cost is absorbed by us.
Kirsh Foundry is a leading manufacturer of gray iron castings, ductile iron castings and malleable iron castings. We provide castings ranging in size from mere ounces to 75 pounds and in runs from prototype to medium volume. For more information, please call or visit our website today!
Willman stands for quality grey iron castings you can count on for years to come. We are a leading foundry producing all types of gray iron and ductile iron components, weighing from ounces to 40,000 lbs, and satisfying the demand for complex engineering castings with our state-of-the-art technology.
Specialty Castings provides a wide range of castings, including austempered ductile iron, ductile iron castings, gray iron casting and high silicon ductile iron. Castings weighing 1/4 pound-250 pounds are handled here. We are a full-service foundry ready to serve you and your industry.
The Simmons Group has been in business for over 50 years offering all types of castings and processes with weights from 1 ounce to 600 pounds plus. Whatever your requirements are for castings, Simmons has the resources to meet your needs in every casting method and material.
Grey
iron is arguably the oldest and most versatile
of all metals that are cast by foundries to date. It is also among the
most abundant and cheapest of all metal materials. Grey iron castings
are a product created from melted grey iron molecules that are poured
into a mold, and once cooled, extracted. The properties of a casting
depend greatly on foundry practice along with the rate of cooling. Large
concentrations of carbon are present in grey irons. This high content
allows for ease of casting, melting, and machining. Designs for grey
iron castings vary greatly due to its near absence of shrinkage while
cooling. The cast product itself is renowned for its durability and strength.
Tensile strength for grey iron castings range from nearly 20,000 psi
to more than 60,000 psi. Without any heat treatment, hardness values
for grey iron products differ from 100 to 300 BHN.
There are a number of things that someone looking to purchase grey castings
should consider. First and foremost is foundry quality in procedures
and resulting products. Since characteristics of grey iron castings rely
greatly on foundry practices, finding the appropriate one will result
in a consumer’s needs being met or surpassed. Carbon concentration
in the casting itself is another important consideration. Common percentages
for carbon amounts range from 2.5 to four percent. A carbon addition
of about .1 percent in grey castings will result in a tensile strength
decrease of around 2700 psi. Different foundries utilize varying casting
procedures.
Green sand molding is the most common production type for castings. It
is generally used to produce small or medium sized cast products, but
can produce castings up to 1000 pounds. The process of shell molding
is used for larger applications. With shell molding, it is possible to
cool the mold that contains the heated metal. This process allows for
a cleaner final product than any other means of production. Centrifugal
casting is the third and final type of procedure. It’s typically
used for pipe and large cylinder production and consists of water-cooled
molds. Choosing a reputable foundry, that utilizes the correct process
for a casting, will lead to both consumer and producer satisfaction.
Many shops not only are capable of grey iron castings, but specialize
in a wide range of non–ferrous metal die-casting.
Grey castings are used extensively in the automotive, appliance, agricultural
and machinery industries. Examples of parts created using grey iron are
pump and turbine housings as well as bases for dynamometers and
compressors. Most manufacturers are capable of both low and high production
outputs as well as short order runs. Prototypes are standard to ensure
accuracy and customer satisfaction. Finishing services such as machining,
painting and galvanizing are provided as well by many of the manufacturers
of grey iron castings.
Alloy castings are a cast product that is composed
of multiple metals. Almost all castings are alloys because it is difficult
to mold a solitary metallic element.
Ductile
iron castings are
very thin molded products cast out of iron or an iron alloy. A ductile
casting has the ability to be stretched, hammered or drawn without
breaking.
Gray iron, or cast iron, is an inexpensive and commonly used metal material.
Grey
iron casting services are performed by foundries.
They normally consist of one or more metals going through liquefaction,
then pouring the molten material into a mold. After proper cooling,
the mold is re-opened, and the casting is ejected.
Iron
castings are
any of variously designed products that are comprised of primarily
iron. Iron is a very strong and plentiful material, making it a prime
candidate for casting foundries.
Malleable iron castings are cast
products that consist of mostly iron. Unlike a normal iron casting,
one that is malleable has the ability to be shaped and bent without
fracture.
Grey Iron Castings Terms
As–Cast Condition – Casting without later heat treatment.
Brinell Hardness Number (BHN) – A value given to a
grey iron casting
after undergoing a Brinell hardness test. Higher numbers indicate a harder
material.
Brinell Hardness Test – A method
used to measure how hard a material is. Typically for grey iron castings,
a 3000kg metal ball is impressed on the surface of a flat grey iron piece;
after removing the ball, the indentation in the metal is recorded and
measured, determining a hardness value.
Chaplet – A small metal insert or spacer used in the molding process
used to give support to the core.
Cope – The top half of a piece which has been forged or caste horizontally.
Deflection – The amount of bending or deformation that an iron casting
endures due to an external load. Deflection is an important consideration
for companies that plan on supporting a load with a grey iron casting.
Drag – The bottom half of a mold created horizontally.
Ductility – The ability of a grey iron casting to deform without being
fractured. Iron castings have a considerable amount of ductility.
Ferrous – Any material that is made of or contains iron.
Foundry – A place where molten metal is poured into a mold, creating
a metal casting.
Galling – A condition that results from excessive friction between metal
surfaces. It creates surface deformation(s) and can result in temporary
adhesion. Grey iron is renowned for its resistance to galling.
Hypereutectic Iron – Refers to an iron metal that is composed of more
than 4.3 percent carbon.
Hypoeutectic Iron – Any iron alloy that is made up of 4.3 percent carbon
or less.
Malleable – A property describing metals that can be pressed, hammered,
formed, rolled, bent, etc.
Modulus of Elasticity – Measures the ration of stress to strain for an
elastic material. Modulus of elasticity also describes stiffness of a
material.
Permeability – The mold–metal property which allows passage of mold/core
gasses during the pouring of molten metal.
Pilot Casting – Also known a sample casting in which a pattern produced
by a production die is used to check the accuracy of the quality and
dimensions of a potential order run casting.
Porosity – Holes formed in casting
due to trapped gasses or chemical reactions between the molten metal
and internal substances or objects such as chaplets.
Pounds per Square Inch (PSI) – The
pressure a material applies on the walls of a closed
enclosure. Atmospheric pressure at sea level is 14.7 psi.
Shrinkage – The decrease in the size of a material.
Grey iron goes through
little if any shrinkage when going through solidification.
Tensile Strength – The amount of stretching and bending that a material
can undergo before breaking or tearing. The tensile strength for grey
iron castings range from about 20,000 psi to 60,000 psi.
