MSDS CATEGORY: III-I

SECTION 2: Hazards identification

Hazard statements

Solid metallic products distributed by Allegheny Ludlum are generally classified as

Principle Routes of Exposure

Inhalation of dust or fume during welding, burning, melting, cutting, brazing, grinding, machining and other operations. NOTE: The composition of fumes from welding are dependent not only on the metal being welded, but also on the welding process and electrodes used. It is recommended that a full health hazard assessment should be performed by a competent health and safety professional for all welding and other operations performed on this product. Acute Effects of Overexposure: INHALATION: • Exposures to high concentrations of metallic fumes or dusts may result in irritation of the respiratory tract and/or sensitization of the lungs and other mucous membranes. • Excessive inhalation of fumes from many metals can produce an acute reaction known as "metal fume fever" (symptoms shown below under SIGNS AND SYMPTOMS OF OVEREXPOSURE). EYE: • Exposure to high concentrations of fumes or dusts may cause irritation and/or sensitization. SKIN: • Exposure to dust may cause irritation or sensitization, possibly leading to dermatitis. INGESTION: • Ingestion of harmful amounts of product as distributed is unlikely due to its solid, insoluble form. Ingestion of dust may cause nausea and/or vomiting. Serious effects may occur if large amounts of dust are swallowed. Chronic Effects of Overexposure: EXCESSIVE AND REPEATED EXPOSURES TO FUME OR DUST GENERATED DURING PROCESSING MAY CAUSE: • Allergic sensitization - dermatitis and asthma • Lung inflammation and damage - pneumonitis, pneumonia, bronchitis, siderosis (benign lung disease caused by inhaling iron particles) • Nasal perforation and nasal cavity damage • Eye inflammation • Central nervous system damage, possibly permanent • Kidney damage • Liver damage CARCINOGENICITY: • The carcinogenicity of this solid product as a whole has not been tested. • Individual component compounds and some of these elemental metals may have been associated with carcinogenicity by NTP and IARC.

Medical Conditions Generally Aggravated by Exposure

For airborne fume and dust, preexisting diseases of the lungs, skin, eyes, and other mucous membranes. Inhalation of high concentrations of Iron Oxide may possibly enhance the risk of lung cancer development in workers exposed to pulmonary carcinogens.