More Information

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The Story

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Continual Lowering of ACGIH TLV® for Manganese


Over the years, regulatory bodies including the Occupational Safety and Health Administration (OSHA) and the American Council of Government Industrial Hygienists (ACGIH) have enacted stricter regulations and recommendations for the Threshold Limit Values (TLV®s) of manganese in weld fume (see timeline for ACGIH recommendations above). Currently OSHA has a permissible exposure limit (PEL) of 5mg/m3 manganese fume, while the ACGIH has reduced its recommended TLV® for Manganese from .2 mg/m3 to .1 mg/m3 for inhalable particulate and .02 mg/m3 for respirable particulate. These latter recommendations reflect an ongoing trend toward stricter regulations – levels have consistently lowered since 1970. Certain states have endorsed even more stringent regulations.

Our Response

Hobart Brothers LLC recognizes it is important for companies to maintain the highest standards of compliance with industry regulations – including those governing welding fume.

The Element family of wires offer substantial reductions in manganese levels to assist with compliance with these regulations and recommendations, while also offering same best in class operability that customers have come to expect from Hobart® filler metals.

Element wires can also be coupled with emissions related products from Miller Electric Mfg. LLC. and Bernard to provide a comprehensive approach to fume abatement.

Hobart Element™ Wires Offer:

Enhanced out-of-position capabilityIncreased operator appeal
Low spatter and fumeImproved operator comfort and productivity
Extremely low manganese emissionsAssists with conformance to environmental regulations
Enhanced slag releaseReduced clean-up and risk of inclusions