Use and Care Manual
91
GMAW
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Aluminum and/or aluminum alloys (as Al)***** 7429-90-5 10 15
Aluminum oxide and/or Bauxite***** 1344-28-1 10 5**
Barium compounds (as Ba)***** 513-77-9 **** ****
Chromium and chromium alloys or compounds (as Cr)***** 7440-47-3 0.5(b) 1.0(b)
Fluorides (as F) 7789-75-5 2.5 2.5
Iron 7439-89-6 10* 10*
Limestone and/or calcium carbonate 1317-65-3 10 15
Lithium compounds (as Li) 554-13-2 10* 10*
Magnesite 1309-48-4 10 15
Magnesium and/or magnesium alloys and compounds (as Mg) 7439-95-4 10* 10*
Manganese and/or manganese alloys and compounds (as Mn)***** 7439-96-5 0.2 5.0(c)
Mineral silicates 1332-58-7 5** 5**
Molybdenum alloys (as Mo) 7439-98-7 10 10
Nickel***** 7440-02-0 1.5 1
Silicates and other binders 1344-09-8 10* 10*
Silicon and/or silicon alloys and compounds (as Si) 7440-21-3 10* 10*
Strontium compounds (as Sr) 1633-05-2 10* 10*
Zirconium alloys and compounds (as Zr) 12004-83-0 5 5
LISTED BELOW ARE SOME TYPICAL INGREDIENTS IN WELDING ELECTRODES AND
THEIR TLV (ACGIH) GUIDELINES AND PEL (OSHA) EXPOSURE LIMITS
INGREDIENTS CAS No. TLV mg/m
3
PEL mg/m
3
Supplemental Information:
(*) Not listed. Nuisance value maximum is 10 milligrams per cubic meter.
PEL value for iron oxide is 10 milligrams per cubic meter. TLV value
for iron oxide is 5 milligrams per cubic meter.
(**) As respirable dust.
(*****)
Subject to the reporting requirements of Sections 311, 312, and 313 of
the Emergency Planning and Community Right-to-Know Act of 1986
and of 40CFR 370 and 372.
(b) TLV-PEL for water soluble chromium (VI) is 0.05 milligrams per cubic
meter. The OSHA PEL is a ceiling value that shall not be exceeded at
any time. The TLV for insoluble chromium (VI) is 0.01 milligrams per
cubic meter.
(c) Values are for manganese fume. STEL (Short Term Exposure Limit) is
3.0 milligrams per cubic meter. Values are those proposed by OSHA
in 1989. Present PEL is 5.0 milligrams per cubic meter (ceiling value).
(****) There is no listed value for insoluble barium compounds. The TLV for
soluble barium compounds is 0.5 mg/m
3
.
TLV and PEL values are as of 2005. Always check Material Safety Data
Sheet (MSDS) with product or on the Lincoln Electric website at
http://www.lincolnelectric.com
AWS F1.1, Method for Sampling Airborne Particulates Generated by
Welding and Allied Processes.
AWS F1.2, Laboratory Method for Measuring Fume Generation
Rates and Total Fume Emission of Welding and Allied Processes.
AWS F1.3,
Evaluating Contaminants in the Welding Environment: A
Strategic Sampling Guide.
AWS F1.5,
Methods for Sampling and Analyzing Gases from
Welding and Allied Processes.
AWS F3.2, Ventilation Guide for Welding Fume Control
AWS F4.1,
Recommended Safe Practices for the Preparation for
Welding and Cutting of Containers and Piping That Have Held
Hazardous Substances.
AWS SHF,
Safety and Health Facts Sheets.
B
IBLIOGRAPHY AND SUGGESTED READING
ANSI Z87.1, Practice for Occupational and Educational Eye and Face
P
rotection
,
American National Standards Institute, 11 West 42nd
Street, New York, NY 10036.
Arc Welding and Your Health: A Handbook of Health Information for
Welding. Published by The American Industrial Hygiene Association,
2700 Prosperity Avenue, Suite 250, Fairfax, VA 22031-4319.
NFPA Standard 51B,
Cutting and Welding Processes, National Fire
Protection Association, 1 Batterymarch Park, P.O. Box 9146, Quincy,
MA 02269-9959.
OSHA General Industry Standard 29 CFR 1910 Subpart Q. OSHA
Hazard Communication Standard 29 CFR 1910.1200. Available from
t
he Occupational Safety and Health Administration at
http://www.osha.org or contact your local OSHA office.
The following publications are published by The American Welding
Society, P.O. Box 351040, Miami, Florida 33135. AWS publications
may be purchased from the American Welding society at
http://www.aws.org or by contacting the AWS at 800-854-7149.
ANSI, Standard Z49.1, Safety in Welding, Cutting and Allied
Processes
. Z49.1 is now available for download at no charge at
http://www.lincolnelectric.com/community/safety/ or at the AWS
website http://www.aws.org.