Annealed Dura-Bar is NACE Compliant

A manufacturer in the oil and gas industry replaced 12L14 steel with Dura-Bar. In this case, the ductile iron was required to be NACE compliant (National Association of Corrosion Engineers), which was easily achieved by annealing 65-45-12 to 60-40-18. The manufacturer also benefited from better machinability, meaning a lower cost per part, as well as no lead (no additional coolant and chip disposal costs).

The NACE (National Association of Corrosion Engineers) standard is lengthy, but one key sentence states that ductile iron must be fully annealed. Annealing is a process that removes pearlite, thereby eliminating the slight chance of internal oxidation.

Any Dura-Bar ductile iron performs much better than steel in corrosive environments. For example, sewer grates and manhole covers are typically made from ductile iron, which may rust somewhat but will not disintegrate or erode away as steel would. Also, manufacturers in the oil and gas industry replaced 12L14 steel with Dura-Bar. In that case, the ductile iron was required to be NACE compliant, which was easily achieved by annealing 65-45-12 to 60-40-18. The manufacturer also benefited from better machinability, meaning a lower cost per part, as well as no lead (no additional coolant and chip disposal costs).

So, if you have a customer whose application requires the material to meet a NACE standard, Dura-Bar 65-45-12 fully annealed to 60-40-18 is compliant.