Product Matrix

Dura-Bar Continuous Cast Iron

Continuous casting produces a product superior to static casting methods. Dura-Bar takes the continuous cast process to a whole other level. We have engineered the process from the raw material used to the individual bar marking to make sure you get the most consistent and machinable bar stock available.

Our product easily exceeds the industry standards for the families of gray, ductile, ni-resist and specialty alloyed irons.

Gray Irons

Material with a flake graphite structure. The product comes in a variety of grades, shapes and sizes. These products are typically cast to nominal dimensions. That means stock is added for machining to the listed dimension.

Dura-Bar Metal Services stocks two popular grades of gray iron.

• G1 Partially Pearlitic Gray Iron (Class 30)
  The softest grade of Dura-Bar. It is normally selected for its machinability where the application requires moderate strength, hardness and resistance to wear. Excellent surface finishes can be obtained. This is a non-stocked item, but can be made as a special.
• G2 Highly Pearlitic Gray Iron (Class 40)
  The most common gray iron. It comes in a large selection of tubes, solids, rectangles and squares. It is well suited for applications requiring high resistance to wear and response to heat treatment.

Another popular gray iron grade we produce is:

• G1A Ferritic Gray Iron (ASTM A247)
  Developed for the glass mold industry. It has a fine grain structure to develop a superior finish. Dimensional growth due to repeated heating and cooling cycles is minimal. This grade is stocked in a full range of rounds from 2 to 6" in diameter. Other sizes easily made as a special.

For help in selecting the grade for your application continue on to our stock list.

Ductile Irons

Material with a nodular graphite structure. Ductile Iron is stronger than gray iron and is often a good substitute for steel in many applications.

The product comes in a variety of grades, shapes and sizes. These products are typically cast to nominal dimensions. That means stock is added for machining to the listed dimension.

Dura-Bar Metal Services stocks two popular grades of ductile iron.

• 65-45-12 Ferritic Ductile Iron (ASTM A536)
  The most machinable grade of Dura-Bar with a high degree of versatility due to its mainly ferritic microstructure and good response to heat treating. It develops good surface finishes, has optimal impact strengths and fatigue properties. It comes in a large selection of tubes, solids, rectangles and squares.
• 80-55-06 Partially Pearlitic Ductile Iron (ASTM A536)
  The pearlite in this grade makes it more wear resistant and stronger than mostly ferritic ductile. Machinability, response to heat treat and surface finishes are good. It comes in a large selection of tubes, solids, rectangles and squares.

Another popular grade we produce is:

• 100-70-02 Pearlitic Ductile Iron
  This matrix is almost all 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.

For help in selecting the grade for your application continue on to our stock list.

Ni-Resist Irons

Material with nickel and copper added to produce a matrix of austenite with alloy carbide. Ni-Resist Iron provides excellent corrosion resistance and is non-magnetic. The carbide network resists wear but does not adversely affect machinability. It exhibits corrosion resistant properties somewhere between cast iron and austenitic stainless steel. It machines much like our G2 gray iron.

The product can be produced in two grades and is stocked in the most common one. This product is typically cast to nominal dimensions. That means stock is added for machining to the listed dimension.

• 201 (ASTM A436, Type 1) Gray Iron Ni-Resist
  This grade has an austenitic matrix with about 10% alloy carbides. 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 comes in solid rounds and can be produced as specials in other shapes.
• 202 (ASTM A436,Type 2) Gray Iron Ni-Resist
  Type 2 is very similar to Type 1 and is often used interchangeably. This grade is especially suitable for temperatures above 1300°F (704°C) and in steam handling applications. It is not a stock item, but can be produced as a special.

For help in selecting the grade for your application continue on to our stock list.

Special Sizes and Alloys

We have the ability to supply virtually any grade or size. We can also work with you to develop a special alloy for your application.

If your exact requirement is not listed here, please contact us for an immediate consultation. Our toll free number is 888-DURA-BAR or you may send us an e-mail.