MATERIAL SAFETY DATA SHEET (MSDS)                                             REVISED 02-08

                                           For Welding Consumables and Related Products

                                Conforms to OSHA Hazard Communication Standard 29 CFR 1910.1200

                         And Superfund Amendments and Reauthorization Act (SARA) of 1986 Public Law 99-499

                                        Standard Must Be Consulted for Specific Requirements

                                                    SECTION I ?IDENTIFICATION

Manufacturer/Supplier Name: American Filler Metals Company                                Telephone No.: 713-649-8785

Address: 6015 Murphy Street, Houston, TX 77033                                   Emergency No.: Chemtrec: 800-424-9300

Trade Name:                                                                                      Classification:

               A-2, O-1, S-7, M-2, H-12, H-13, D-2, P-20, W-1, M-42, MARAGING 250                Heat Treatable Tool & Die Alloys



                                             SECTION II ?HAZARDOUS MATERIALS*

IMPORTANT: This section covers the materials from which the product is manufactured. *The term "HAZARDOUS MATERIALS" should

be interpreted as a term required and defined in OSHA HAZARD COMMUNICATION STANDARD 29 CFR 1910.1200 however the use of

this term does not necessarily imply the existence of any hazard.

Flux or other ingredients                % Weight                 CAS No.                      Exposure Limit (mg/m?

                                                                                                 OSHA PEL                  ACGIH TLV

                                                                                     55ppm                                 55ppm

Carbon                                 .05-1.60                    7782-42-5

                                                                                       5.0                                   1.0

Manganese                              .15-1.30                    7439-96-5

                                                                                       5.0                                   3.0

Silicon                                .15-1.60                    7440-21-3

                                                                                       1.0                                   0.5

Chromium                               .40-6.00                    7440-47-3

                                                                                       1.0                                   1.0

Nickel                                 .25-2.00                    7440-02-0

                                                                                      15.0                                  10.0

Molybdenum                             .15-10.0                    7439-98-7

                                                                                       NA                                    5.0

Tungsten                               .45-7.00                    7440-33-7

                                                                                       0.1                                  0.05

Vanadium                               .15-2.50                    1314-62-1

                                                                                       5.0                                   NA

Iron                                     BAL                       7439-89-6

Occupational Safety and Health Administration 29 CFR 1910.1000 Permissible Exposure Limit (PEL).                  American Conference of

Governmental industrial Hygienists (ACGIH) Threshold Limit Value (TLV[R]).

                                                   SECTION III ?PHYSICAL DATA

Material is a solid steel core rod. NO HAZARD EXISTS UNTIL THIS PRODUCT IS USED IN WELDING.

                                      SECTION IV ?FIRE AND EXPLOSION HAZARD DATA

                  Non-Flammable: Welding arc and sparks can ignite combustibles. See Z-49.1 referenced in Section VI

                                                  SECTION V ?REACTIVITY DATA

Hazardous Decomposition Products

Welding fumes and gases cannot be classified simply. The composition and quantity of these fumes and gases are dependent upon the

metal being welded, the procedures followed and the electrodes used.

Workers should be aware that the composition and quantity of fumes and gases to which they may be exposed, are influenced by coatings

which may be present on the metal being welded (such as paint, plating, or galvanizing), the number of welders in operation and the volume

of the work area, the quality and amount of ventilation, the position of the welder's head with respect to the fume plume, as well as the

presence of contaminants in the atmosphere (such as chlorinated hydrocarbon vapors from cleaning and degreasing procedures). When

the electrode is consumed, the fumes and gas decomposition products generated are different in percent and form from the ingredients

listed in Section II. The composition of these fumes and gases are the concerning matter and not the composition of the electrode itself.

Decomposition products include those originating from the volatilization, reaction, or oxidation of the ingredients shown in Section II, plus

those from the base metal, coating and the other factors noted above.

Reasonable expected fume constituents of this product would include: Complex oxides of iron, manganese, silicon, chromium, nickel,

molybdenum, calcium, magnesium, and titanium.

                                               SECTION VI ?HEALTH HAZARD DATA

Route of Entry: The primary routes of entry are the respiratory system, eyes, and skin.

Effects of exposure to welding fumes: Short term overexposure to welding fumes may result in discomfort such as: dizziness, nausea, or

dryness or irritation of nose, throat, lungs, or eyes (see section V and VII).

Effects of chromic exposure to product: Long term overexposure to welding fumes can result in: chronic respiratory problems, iron build-up

in the lungs, bone erosion, reduced pulmonary functions and nervous disorders.

Exposure limits: Below are the LD50 and LC50 values available for some of the fumes and gases given off during welding:









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(Continued from front page)

         Material                     CAS #                    LD50 or LC50                 Route of Entry                  Species



Chromium VI Oxide                    1333-82-0                  LD50=80mg/kg                      oral                        rat

Cobalt Oxide                         1307-96-6                 LD50=202mg/kg                      oral                        rat

Copper Oxide                         1317-39-1                 LD50=470mg/kg                      oral                        rat

Iron Oxide                           1309-37-1                LD50=5500mg/kg                intraperitoneal                   rat

Vanadium pentoxide                   1314-62-1                  LD50=23mb/kg                      oral                        rat

Molybdenum oxide                    18868-43-4                 LD50=125mg/kg                      oral                        rat

Nickel oxide                         1313-99-1                  LD50=50mg/kg                subcutaneous                     mouse

Tungsten oxide                       1314-35-8                 LD50=840mg/kg                      oral                        rat

Ozone                               10028-15-6               LC50=34.5ppm/3H                   inhalation                     cat

Carbon monoxide                       630-08-0               LC50=2444ppm/4H                   inhalation                    mouse

Fluorine                             7782-41-4                LC50=185ppm/1H                   inhalation                     rat



Note: LC50 and LD50 values are the amount of a substance given to the stated species that causes 50% of the species to die.



Irrtancy of product: Aggravation of pre-existing respiratory or allergetic conditions may occur in some workers even if the concentration of

the fumes is maintained below the recommended limits. Some studies have shown a higher level of lung related problems among older

welders who smoke than those who did not smoke.

Sensitization to product: none known

Carcinogenicity: Nickel and Chromium must be considered possible carcinogens under OSHA (29CFR1910.1200). The International

Agency for Research on Cancer (IARC) has indicated that nickel and certain nickel compounds are probably carcinogenic for humans, but

that the specified compounds which may be carcinogenic cannot be specified precisely. This conclusion was based on experience in certain

nickel refining operations. Chromium has also been listed by IARC because of "sufficient evidence for the carcinogenicity of chromium and

certain chromium compounds." The studies forming the basis for the conclusion were from operations different from production or welding

of nickel and chromium alloys. Recent epidemiological studies of workers melting and working alloys containing nickel/chromium have

found no increased risk of cancer. Nevertheless, exposure limits for these and all others must be maintained below the levels specified in

sections II and V.

Reproductive Toxicity: none known

Teratogenicity: none known

Mutagenicity: none known

Name of Toxicologically Synergistic Products: none known

                SECTION VII ?CONTROL MEASURES AND PRECAUTIONS FOR SAFE HANDLING AND USE

Read and understand the manufacturer's instructions and precautionary label on this product. See American Standard Z-49.1 Safety in

Welding and Cutting published by the AMERICAN WELDING SOCIETY, 550 N.W. LeJeune Road, Miami, Florida 33126 and OSHA

Publication 2206 (29 CFR 1910). U.S. Government Printing Office, Washington D.C. 20402 for more details on the following topics.

Exposure Monitoring: Maintain all exposures below the limits in section V. Monitor the air to ensure that the levels are below the above

mentioned limits. See AWS F1.1: "Method for Sampling Airborne Particulates Generated by Welding and Allied Processes" and AWS F1.3

"Evaluating Contaminants in the Welding Environment: A Sampling Strategy Guide."

Ventilation: Use plenty of ventilation and/or local exhaust at the arc, to keep the fumes and gases below the threshold limit value within the

worker's breathing zone and the general work area. Welders should be advised to keep their head out of the fumes.

Respiratory Protection: Use respirable fume respirator or air supplied respirator when welding in a confined space or general work area

where local exhaust and/or ventilation does not keep exposure below the threshold limit value.

Eye Protection: Wear a helmet or face shield with a filter lens shade number 12-14 or darker. Shield other workers by providing screens

and flash goggles.

Protective Clothing: Wear approved head, hand and body protection which help to prevent injury from radiation, sparks, and electrical

shock. See ANSI Z-49.1. This would include wearing welder's gloves and a protective face shield and may include arm protectors, apron,

hats, shoulder protection, as well as dark substantial clothing. Welders should be trained not to allow electrically live parts to contact the

skin or wet clothing and gloves. The welders should insulate themselves from the work and ground.

Waste Disposal Method: Discard any product, residue, disposal container, or liner in an environmentally acceptable manner approved by

Federal, State and Local regulations.

American Filler Metals Co. believes that the information contained in this (MSDS) Material Safety Data Sheet is accurate. However,

American Filler Metals Co. cannot make any express or implied warranty as to this information.