Dura-Bar XL is produced using the permanent mold casting method and expands the Dura-Bar size range. Dura-Bar XL is turned to 21, 23, 24, 25 and 26 inch diameters (guaranteed to finish 1/4" under turned dimension). The molds are considered "permanent" because they can be used multiple times before being replaced, lowering the cost of the product over methods that require a mold expense for each pour.
Dura-Bar XL is produced using the same quality molten iron as continuous cast Dura-Bar and is proof-turned for an excellent machining surface. The permanent mold casting method makes use of reusable metal molds in place of sand-based molds, which eliminates contamination and product defect problems common to sand castings and traditional foundries.
Dura-Bar XL is produced in three grades: 65-45-12 (Ductile Iron), 80-55-06 (Ductile Iron) and G2 (Gray Iron).
| Family | Grade | Description |
|---|---|---|
| Ductile Iron | 65-45-12 |
Ferritic Ductile Iron (ASTM A536)
|
| 80-55-06 |
Partially Pearlitic Ductile Iron (ASTM A536)
|
|
| Gray Iron | G2 |
Highly Pearlitic Gray Iron (Conforms to ASTM A48, Class 40)
|
