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Dura Bar Metal Services
Dura-Bar grades offered by Dura-Bar Metal Services #

Grade Listing

Selecting the proper grade of cast iron depends on the application. Important factors to consider include: machinability, wear and strength. Use the chart below or click on a particular grade of cast iron to learn whether it is a good fit for your application.

If your exact requirement is not listed below, please contact us today for a free consultation. We have the ability to supply virtually any grade or size of Dura-Bar and can work with you to develop a special alloy for your application.

Available GradesShow All / Hide All
Family Grade Description
Ductile Iron 65-45-12

Ferritic Ductile Iron (ASTM A536) viewhide

This is the most machinable grade of Dura-Bar. The ferritic structure provides for excellent machinability with good surface finishes. It has optimal impact strengths and fatigue properties, and comes in a large selection of tubes, solid rounds, rectangles and squares.


Tensile Strength: 65,000 psi
Yield Strength: 45,000 psi
Elongation: 12%


Partially Pearlitic Ductile Iron (ASTM A536) viewhide

The pearlite in this grade makes it more wear resistant and stronger than a mostly ferritic grade. Machinability, response to heat treat and surface finishes are good. It comes in a large selection of tubes, solid rounds, rectangles and squares.


Tensile Strength: 80,000 psi
Yield Strength: 55,000 psi
Elongation: 6%


Pearlitic Ductile Iron (ASTM A536) viewshow

This matrix is mostly pearlite, maximizing strength and wear characteristics for non-alloyed irons. It is also more difficult to machine, but the use of this grade may eliminate heat treating. This grade is not stocked in a full range of sizes. Call for availability or a custom run.


Tensile Strength: 100,000 psi
Yield Strength: 70,000 psi
Elongation: 3%

Gray Iron G2

Highly Pearlitic Gray Iron (Conforms to ASTM A48, Class 40) viewhide

This is the most common gray iron. It is well suited for applications requiring high resistance to wear and responds well to heat treatment. It comes in a large selection of tubes, solid rounds, rectangles and squares.


Ferritic Gray Iron viewshow

Originally developed for the glass mold industry, this grade has a fine grain structure and can be machined for a superior finish. Dimensional growth due to repeated heating and cooling cycles is minimal.
Ni-Resist Iron 201 Type 1

(Conforms to ASTM A436, Type 1) Gray Iron Ni-Resist* viewshow

This grade has an austenitic matrix with about 10% alloy carbides. It is suitable for corrosive environments in sour well oils, salts, salt water acids and alkalies. It is relatively soft and chrome is added to improve wear resistance. It is available as a stock item in solid rounds form 1" to 6" diameters, and can be produced in other sizes and shapes as a custom run.

* Non-magnetic, good for corrosive environment.