Rohs & DFARS Definition

Rohs & DFARS Definition


ROHS is to restrict certain dangerous substances commonly used in electronic and electronic equipment. Any time you see Rohs it is being checked for the presence of Lead (Pb), Cadmium (Cd), Mercury (Hg), Hexavalent chromium (Hex-Cr), Polybrominated biphenyls (PBB), and Polybrominated diphenyl ethers (PBDE). For Cadmium and Hexavalent chromium, there must be less than 0.01% of the substance by weight at raw homogeneous materials level. For Lead, PBB, and PBDE, there must be no more than 0.1% of the material, when calculated by weight at raw homogeneous materials. Any RoHS compliant component must have 100 ppm or less of mercury and the mercury must not have been intentionally added to the component. In the EU, some military and medical equipment are exempt from RoHS compliance. (According to,2014)

Australia, Austria, Belgium, Canada, Denmark, Egypt, Finland, France, Germany, Greece, Israel, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland, Turkey, and the United Kingdom. (Per DFARS 225.872-1):Qualifying Countries

Metals Requiring Compliance:
Not All metal used in government or defense contracts requires DFARS’ standards.

DFARS “Specialty Metals” requiring compliance (Per DFARS 252.225-7008):DFARS As Applied to Metals


DFARS Qualifying Countries

With a maximum alloy content exceeding one or more of the following limits:manganese, 1.65 percent; silicon, .60 percent; or copper, .60 percent; or Containing more than 0.25 percent of any of the following elements: aluminum, chromium, cobalt, columbium, molybdenum, nickel, titanium, tungsten, or vanadium; Metal alloys consisting of nickel, iron-nickel, and cobalt base alloys containing a total of other alloying metals (except iron) in excess of 10 percent; Titanium and titanium alloys; or Zirconium and zirconium base alloys