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| Base Metal |
CAS Number |
% Composition
by Weight |
ACGIH
TLV (mg/m³) * |
OSHA 1910.1000
TWA (mg/m¹) ** |
WISHA
PEL (mg/m¹) *** |
| Aluminum (Al) |
7429-90-5 |
80.0-99.7 |
10.0, as metal dust and oxide
5.0, as welding fume |
Not established
-- |
Not established
-- |
| Alloying Element |
CAS Number |
Maximum % Composition by Weight |
ACGIH
TLV (mg/m³) * |
OSHA 1910.1000
TWA (mg/m¹) ** |
WISHA
PEL (mg/m¹) *** |
| 0.1 - 1.0 |
1.0 - 10.0 |
1.0 - 20.0 |
| Cobalt (Co) |
7440-45-4 |
P |
W |
|
0.1 |
0.1 |
0.1, as fume |
| Copper (Cu) |
7440-50-8 |
|
W |
P |
0.2, as fume |
0.1, as fume |
0.1, as fume |
| Iron (Fe) |
1309-37-1 |
|
W, P |
|
5.0, as oxide fume |
10.0, as oxide fume |
10.0, as oxide fume |
| Magnesium (Mg) |
1309-48-4 |
|
W |
P |
10.0, as oxide fume |
15.0, as oxide fume |
10.0, as oxide fume |
| Manganese (Mn) |
7439-96-5 |
|
W |
|
1.0, as fume |
5.0, Ceiling |
5.0, Ceiling |
| Silicon (Si) |
7440-21-3 |
|
|
W, P |
10.0, as metal dust |
not established |
not established |
| 5.0, as respirable dust |
|
|
| Silver (Ag) |
7440-22-4 |
P |
|
|
0.1, as metal |
0.01, as metal |
0.01, as metal |
| Tin (Sn) |
7440-31-5 |
|
P |
|
2.0, as oxide and metal |
2.0, inorganic compounds |
10.0, as oxide fume |
| Zinc (Zn) |
1314-13-2 |
|
W, P |
|
5.0, as oxide fume |
5.0, as oxide fume |
5.0, as oxide fume |
| Key: |
Note: |
| W = Wrought Aluminum (fabricated products) |
Kelsar Aluminum alloys may be comprised of all or variations of the alloys shown here. In addition, the welding of aluminum alloys may produce the products listed in Section VII, #7.
See Section VII #6 for components concerning aluminum scrap. |
| P = Prime hardened aluminum |
| * TLV = Threshold Limit Value |
| ** TWA = Time Weighted Average |
| *** PEL = Permissible Exposure Limit |
| pH |
Melting Point |
Boiling Point |
Specific Gravity
(H²0 = 1) |
Solubility in Water
(% by weight) |
Vapor Pressure |
| N/A |
950°F - 1215°F |
N/A |
2.5 - 2.9 |
nil |
N/A |
Appropriate personal protective equipment is required when melting, casting, machining, forging, or otherwise processing, The nature of the processing activity will determine what form of equipment is necessary, i.e. glasses, respirator, protective clothing, and ear protection. |
For skin contact, remove particles by thoroughly washing with soap and water. |
For eye contact, flush with water for at least 15 minutes. Get medical attention if irritation persists. |
For inhalation, remove from exposure. Get medical attention if experiencing breathing difficulty. |
| Health |
Inhalation |
Not likely unless material machined, welded, or re-melted. Exposure to zinc oxide fume can result in "zinc chills" (metal fume fever). The temporary symptoms can include fever, chills, nausea, vomiting, and muscular pain. Recovery is usually complete in 24 to 48 hours. Overexposure to copper fume can cause upper respiratory tract irritation. |
| Ingestion |
Not likely |
| Skin |
Not likely |
| Eyes |
May irritate eyes when welding or plasma cutting. See #7, Additional Information |
Waste Disposal Methods |
Used or unused product should be tested to determine hazard status and disposal requirements under federal, state, or local laws and regulations
Disposer must comply with Federal, State, and Local disposal or discharge laws. |
- Halogen acids and sodium hydroxide in contact with aluminum may generate explosive mixtures with hydrogen
- Finely divided aluminum will form explosive mixtures in air. It will also form explosive mixtures in air in the presence of bromates, iodates, or ammonium nitrate.
- When re-melting aluminum scrap, entrapped molecule or the presence of strong oxidizers such as ammonium nitrate could cause and explosion. This applies to the collection of moisture in saw cavities as well. Moisture must be driven off prior to re-melting.
- Do not touch cast aluminum metal or heated aluminum product without knowing metal temperature. Aluminum experiences no color change during heating. If hot metal is touched, burns can result.
- Aluminum powder must be packaged and shipped as a Flammable Solid, UN1395.
- Hard alloy ingots in the 2000 and 7000 series must be stress-relieved to prevent explosion (or violent cracking) when sawed.
- The welding of aluminum alloys may generate carbon monoxide, carbon dioxide, ozone, nitrogen oxides, infra-red radiation, and ultra-violet radiation, in addition to metal fume.
- Some aluminum scrap may be contaminated with oil at levels greater than 1%. Melting of aluminum scrap may generate ail vapors which are irritating to the eyes and upper respiratory tract. Prolonged or repeated skin contact with oil may cause skin irritation.
- Vapor degrease must be properly maintained to limit the accumulation of aluminum fumes. The accumulation of aluminum fumes could result in a potential degrease fire or explosion.
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