Common Techniques for Galvanizing Metal

Galvanization is a process in which metal is coated with an additional thin protective layer, usually comprised of zinc, to prevent corrosion. When considered galvanization for any construction needs, you will need to review all of your options in order to choose the best one. Continue reading to learn the most common methods used to galvanize metal, as well as, where to get paid cash-in-hand for recycling your leftover scrap metal materials and commodities in Central Indiana.

Indianapolis Scrap Metal Buyers 1-888-586-5322
Indianapolis Scrap Metal Buyers 1-888-586-5322

The Benefit and Purpose of Galvanized Metal

After metal is galvanized, the added layer of protection serves as a first defense against all external environmental factors, such as moisture, rain, snow, dirt, wind, wildlife, and any other element or organism that can negatively impact the appeal and structural integrity of the base metal. Galvanization also protects metal through a process known as “galvanic corrosion”, which takes place when two metals with separate electro-chemical make-up come into contact with one another while an electrolyte is present, such as the case of salt water. Furthermore, galvanizing metal is more cost-effective compared to using austenitic stainless steel or aluminum for corrosion prevention applications.

Methods of Galvanizing

There are many different methods used to galvanizing metal. The most common approaches include pre-galvanizing, hot-dip galvanizing, and electro-galvanizing. Pre-galvanizing and electro-galvanizing are generally applied continuously to a roll of sheet metal, while hot-dipped galvanizing is mostly applied to metals with complex shapes and formations.

Here is a brief description of each process and how they give metal anti-corrosion properties:

Pre-Galvanizing – Pre-galvanizing is process that involves cleaning the base metal (either mechanically, chemically, or both) to ensure that a quality bond can be made between metal and coating, then passing it through a pool of liquid zinc, and then recoiling it. This method is typically carried out in a steel mill, and only applied to metals that are already shaped.

Hot-Dip Galvanizing – Hot-dip galvanizing is very similar to pre-galvanizing in that both process involve cleaning the base metal and then dipping it into hot, liquid zinc. However, before dipping, the base metal is further cleared of any leftover oxides.

Electro-Galvanizing – Electro-galvanizing is a process that involves using electrical currents in an electrolyte solution to transfer zinc ions onto metal. To achieve this, positively-charged zinc ions are electrically reduced to zinc metal, which is in turn, deposited onto the positively-charged base metal. Grain refiners are also sometimes incorporated to ensure smoother coating.

How to Sell Metal Junk and Scrap Metal in Central Indiana

Call Garden City Iron & Metal at 1-888-586-5322 to sell scrap metal in Indianapolis, 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.

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

Is Stainless Steel Magnetic?

You might have magnets stuck to the front of your refrigerator at home, but the truth is, not all stainless steel is magnetic. You see, it depends on the type of steel and the particular alloy constituents. Continue reading to learn more about stainless steel, including its magnetic properties and limitations, as well as, what you can do with scrap stainless steel in Indiana.

Indianapolis Steel Recycling
Indianapolis Steel Recycling 1-888-586-5322

Stainless Steel Components and Properties

Stainless steel, also known as inox or inox steel, is a man-made alloy that has a minimum of 10.5% chromium content and a maximum of 1.2% carbon content. Some of the most admired qualities of stainless steel is its resistance to staining, corrosion, and oxidation (rust). For this reason, it is often used in kitchens and food processing plants, as well as industries like medical, electrical, petrochemical, manufacturing, automotive, and more.

Benefits of Stainless Steel Metal

Stainless steel comes in many grades and finishes, all of which offer their own unique appeal or performance. Compared to carbon steel, stainless steel has a much higher chromium content, so when exposed to conditions that would otherwise make it rust or corrode, it instead forms a passive coating of chromium oxide that prevents further deterioration. Not only does it not corrode and does not require a protective coating, it is also easy to clean and sterilize.

Is Stainless Steel Magnetic or Not?

As mentioned, some types of stainless steel are magnetic, and others are not. Two particular factors must be true in order for stainless steel to be magnetic. First, it must contain iron. Some stainless steels contain iron, while others do not. You see, all metal can be categorized as either ferrous or non-ferrous. Ferrous metals contain iron, while non-ferrous metals do not. You can easily tell the difference between the two by simply using a magnet. If the magnet sticks, it is ferrous and contains iron; if it does not stick, it is non-ferrous and contains no iron. Second, stainless steel must have a crystal composition arranged in a ferritic or martensitic structure.

There are 3 types of magnetic stainless steel: ferritic, martensitic, and duplex. Non-magnetic stainless steel are alloys that have austenitic structures. This means they have higher quantities of austenite in them, which is what makes them non-magnetic. For instance, stainless steel grades like 304 and 316 retain high amounts of iron in their chemical composition, but their austenite structures renders them non-magnetic, or non-ferromagnetic.

How to Sell Scrap Steel in Indianapolis for Instant Cash

Call Garden City Iron & Metal at 1-888-586-5322 to recycle scrap metal in Indianapolis, or 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! Get rid of your junk and make some fast cash at the same time.

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