What are Heavy Metals?

An official scientific definition of a heavy metal really doesn’t exist. However, most authorities suggest that a heavy metal is one that is dense and usually toxic at low concentrations. There are several kinds of metals found all over the world, and each one plays a vital role in our society.

Continue reading to learn which ones are deemed “heavy”, and how to safely recycle them.

Heavy Metal Recycling 1-888-586-5322

Heavy Metal Recycling 1-888-586-5322

Heavy Metal Composition

Metalloids are elements whose properties are midway between those of standard metals and solid non-metals. Lighter metals and metalloids are often considered heavy metals, primarily because of their mass, volume, and toxicity levels. This theory is contradicted when considering gold, since gold is non-toxic, but often deemed a heavy metal. In addition to toxicity and density, most heavy metals also retain a higher atomic number and atomic weight. They also tend to have a specific gravity greater than five.

Heavy metals can include a wide range of metals, such as basic metals, metalloids, transition metals, lanthanides (elements in the periodic table ranging from lanthanum to lutetium), and actinides(elements in the periodic table ranging from actinium to lawrencium). Examples of common metals that are toxic and have high density include lead, mercury, and bismuth.

Common Heavy Metals:

Bismuth
Cadmium
Chromium
Lead
Mercury

Less Common, But Sometimes Considered Heavy Metals Include:

Aluminum
Arsenic
Beryllium
Cobalt
Copper
Iron
Manganese
Zinc

People who consider heavy metals to be those with a density greater than 5 use this list:

    ⚛ Actinium
    ⚛ Americium
    ⚛ Arsenic
    ⚛ Astatine
    ⚛ Berkelium
    ⚛ Bohrium
    ⚛ Bismuth
    ⚛ Cadmium
    ⚛ Californium
    ⚛ Cerium
    ⚛ Chromium
    ⚛ Cobalt
    ⚛ Copernicium
    ⚛ Copper
    ⚛ Curium
    ⚛ Darmstadtium
    ⚛ Dysprosium
    ⚛ Dubnium
    ⚛ Elements 113-118
    ⚛ Einsteinium
    ⚛ Erbium
    ⚛ Europium
    ⚛ Fermium
    ⚛ Gadolinium
    ⚛ Gallium
    ⚛ Germanium
    ⚛ Gold
    ⚛ Hafnium
    ⚛ Hassium
    ⚛ Holmium
    ⚛ Indium
    ⚛ Iridium
    ⚛ Iron
    ⚛ Lanthanum
    ⚛ Lead
    ⚛ Lawrencium
    ⚛ Lutetium
    ⚛ Manganese
    ⚛ Mercury
    ⚛ Meitnerium
    ⚛ Molybdenum
    ⚛ Neodymium
    ⚛ Nickel
    ⚛ Niobium
    ⚛ Neptunium
    ⚛ Nobelium
    ⚛ Osmium
    ⚛ Palladium
    ⚛ Platinum
    ⚛ Polonium
    ⚛ Praseodymium
    ⚛ Protactinium
    ⚛ Promethium
    ⚛ Plutonium
    ⚛ Radium
    ⚛ Rutherfordium
    ⚛ Roentgenium
    ⚛ Ruthenium
    ⚛ Rhenium
    ⚛ Rhodium
    ⚛ Samarium
    ⚛ Seaborgium
    ⚛ Silver
    ⚛ Technetium
    ⚛ Titanium
    ⚛ Tin
    ⚛ Tellurium
    ⚛ Tantalum
    ⚛ Tungsten
    ⚛ Thallium
    ⚛ Terbium
    ⚛ Thorium
    ⚛ Thulium
    ⚛ Uranium
    ⚛ Vanadium
    ⚛ Ytterbium
    ⚛ Zinc
    ⚛ Zirconium

Recycle Your Scrap Metal for INSTANT Cash

Garden City Iron and Metal 1-888-586-5322

Garden City Iron and Metal 1-888-586-5322

Call Garden City Iron & Metal at 1-888-586-5322 to recycle scrap metal in Central and Southern Indiana. We pay cash on the spot for all metal and metal commodities, including vehicles, car parts, appliances, construction equipment, farming equipment, and much more! Collect all the scrap metal you can, and then sell it to us for the highest profit in town! Request a free estimate or information, today.

How Often Should a Kitchen Hood System Be Cleaned?

Neglecting to clean kitchen hood systems can be very dangerous and costly ground to walk on, whether in your home or business. Components like exhaust fans, filters, ducts, and hoods all need to be preserved and cleaned in order to avoid liabilities, as well as, costly appliance replacement.

Indianapolis Appliance Recycling 1-888-586-5322

Indianapolis Appliance Recycling 1-888-586-5322


For commercial kitchen and venues, it is actually required by law to have kitchen hood systems cleaned on a routine basis. Although not required by law, it is equally important for residential kitchen hood systems to be cleaned on a routine basis. This is to avoid potential hazards and liabilities, such as broken equipment, lingering odors, and kitchen grease fires.

Grease Fires and Hazards

Grease is a common facilitator for kitchen fires, especially for restaurants that cook with a lot of oil. It builds up and accumulates in the system’s ducts and hoods, and begins to act as fuel for fire. Exhaust systems with built-in fire suppression systems do exist on the market, and come highly recommended for high volume kitchens. But even with innovative technologies like these, there is still room for such hazards, so it is still crucial to regularly clean kitchen hood and kitchen exhausts.

Factors to Consider

If you can’t decide how frequent you should have your kitchen hood system cleaned, think about the amount of volume being produced in your kitchen. This will differ greatly between restaurants and food venues, and residential homes. If your kitchen is very busy, and cooks a lot of food, then you should expect to maintenance your kitchen exhausts and ducts more often. Residential homes may only need to have their systems cleaned annually.

Furthermore, think about the type of food frequently being cooked in your kitchen. For instance, venues like bars and pubs generally serve quickly prepared foods like deep-fried appetizers and entrees. This type of menu involves a lot of grease cooking, which will encourage a higher accumulation of grease particles in ducts and exhausts, thus resulting in the need for more frequent cleaning.

Recommended Cleaning Schedules

You might wonder what exactly constitutes “frequent” cleaning. To be more precise, it is recommended to clean a kitchen hood system once every six months or so. For homes, kitchen hood cleaning can schedule once per year, or even every other year. If you are a bar owner or a restaurant that cooks a large amount of oils and grease, then the kitchen exhaust, ducts, fans, and filters all need cleaned at least once a month, every month.

What to Do With an Old Kitchen Hood System

Just because your kitchen hood system has been engulfed in grease, or has fallen victim to a grease fire, you can still make good use of it. Various scrap metal recycling centers accept old or broken appliances, including kitchen hood systems. Not only will most of them pick it up and haul it away for you for free, many will even pay you cash in return. Broken appliances still retain valuable metals that can be reprocessed into new scrap metal. This makes them valuable to enterprises like the scrap metal industry. So don’t get down if your kitchen hood system take a turn for the worst, or cooks its last meal; a local and reputable Indianapolis scrap metal recycling company will take it off your hands and pay you cash on the spot.

Who to Trust for Appliance Recycling

Garden City Iron and Metal 1-888-586-5322

Garden City Iron and Metal 1-888-586-5322

Call Garden City Iron & Metal at 1-888-586-5322 to recycle scrap metal and junk metal commodities in Central and Southern Indiana. We pay cash on the spot for both ferrous and non-ferrous metals, as well as, junk cars, automotive parts, appliances, construction equipment, motorized farming equipment, and much more!