Ductile Iron Square Bar

Industrial Tube & Steel stocks most square ductile bar in 65-45-12 grade. Other grades such as 80-55-06, 100-70-03, and SSDI are available but subject to quantity and availability. Contact us today for availability.

Ductile Iron Square Bar Basics

Curb the cost of manufacturing parts by reducing machining time and extending tool life with ductile iron square bar. This material is comparable in strength to plain carbon and free-machining steels, but it offers improved machinability at a lower overall cost. Additional advantages of Dura-Bar continuous-cast iron includes:

  • Superior corrosion resistance
  • Excellent fatigue strength
  • Superior machinability
  • Fine-grained surface finish
  • Heightened wear resistance
  • High thermal conductivity

Ductile iron square bar is stocked in a range of sizes, from 2.030” x 2.030” to 21.000” x 21.000”. As-cast squares are made to the actual size with no allowance for machine stock added. Squares are cast to actual dimension, with clean up stock dependent on the height-and-width ratio. See Dura-Bar’s Stock Allowance & Guaranteed Clean-Up Sizes for specific sizes. They can be milled to achieve close-tolerance benefits, upon request. Standard lengths are 72”, while additional lengths are available up to 144”.

Industrial Tube & Steel Corporation is ready and willing to answer any of your cast iron size, tolerance, or length needs. Our industry-leading automatic equipment enables us to cut raw material to your specific dimensions quickly and efficiently.

Ductile Iron Square Bar Types

Industrial Tube & Steel carries a wide range of ductile iron square bar grades to suit any application. This material is produced to meet ASTM A536 specification standards, and is available in the following grades:

  • 65-45-12
  • 80-55-06
  • 100-70-03
  • Solution Strengthen Ductile Iron, or SSDI

65-45-12 grade ductile iron contains nodular graphite in a matrix of ferrite with small amounts of pearlite. The ferritic structure gives excellent machinability with good surface finishes along with optimal impact strengths, fatigue properties, electrical conductivity, and high magnetic permeability. This iron has approximately the same tensile and yield strengths as AISI 1020 steel in the as-rolled condition.

80-55-06 grade ductile iron contains nodular graphite in a matrix of ferrite and pearlite. The pearlite/ferrite structure provides higher wear resistance and strength when compared to a ferritic grade of ductile iron. This material is readily machinable with excellent surface finishes. Tensile and yield strengths are similar to AISI 1040 steel in the as-rolled condition.

100-70-03 ductile iron combines nodular graphite in a matrix of pearlite with a small amount of ferrite. It's produced in an assortment of sizes and shapes and is often used in place of plain carbon steel. The material's machinability is similar to carbon steel, which can lower the cost of producing parts that require extensive machining.

SSDI (Solution Strengthen Ductile Iron) is a grade of ductile iron that combines the high mechanical strengths of a pearlitic ductile iron with the machinability advantages of a ferritic ductile iron. It’s an attractive grade of ductile iron for the design and manufacture of components.

Ductile Iron Square Bar Applications

With a graphite-and-ferritic microstructure, ductile iron square bar has excellent free machining properties without the waste disposal problems of other materials. It’s perfect for a variety of applications, for example:

  • Fluid power glands
  • Manifolds
  • Pistons
  • Spools
  • Valves
  • Bushings
  • Cams
  • Gears
  • Gibs
  • Pulleys
  • Wheels
  • Rams

When compared to low-to-medium plain carbon steels, another benefit of ductile iron square bar is its overall affordability. This combination of performance and cost makes ductile iron square bar a superb choice for use in an array of industries including oil & gas, fluid handling and machinery.

Improve your application with high-quality ductile iron square bar from Industrial Tube & Steel. A trusted metals distributor, we have the extensive product range, workforce, and resources to fulfill client requests on time and at competitive prices. 

For additional information, contact our team.

Customized Cut Lengths Available. Please Specify Cut Length During Quote Process.

Ductile Cast Iron Square Bar

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