Common Categories of Corrosion Resistant Alloys

Corrosion resistant alloys are also referred to as “CRA’s”, and they are a popular material in the world of welding and construction due to their high resistance to, you guess it, corrosion. There are various beneficial properties of corrosion resistant alloys, all of which have their own unique applications and functions in various industries all across the nation.

Continue reading to learn more about corrosion resistant alloys, including some common types, what they are best used for, and where you can recycle scrap metal materials in Indiana.

Indianapolis Scrap Metal Buyers 317-244-0700
Indianapolis Scrap Metal Buyers 317-244-0700

Corrosion Resistant Alloys (CRA’s)

Corrosion resistant alloys are a type of metal that is specially designed and manufactured to resist deterioration, discoloration, degeneration, and other kinds of corrosion. There are many kinds of CRA’s to choose from, all of which ranging in level of resistance. Elements and condition like temperature, CO2, Sulphur, environmental pH, and chloride ion concentration all affect resistance capabilities. These factors in turn affect the passive film’s stability (commencement of overall corrosion or pitting), re-passivation ease of initiated pits, dissolution rates or metal from pits, and the stress corrosion cracking (SCC) risk.

Common CRA’s on the Market:

There are various kinds of Corrosion resistant alloys available on the market today, however, there are 3 in particular that seem to take the lead on current trend. These include 316L (austenitic stainless steel), alloy 22, and Zeron® 100.

316L (Austenitic Stainless Steel) – The most common applications for 316L CRA include clad line pipe building, surface piping, and vessel cladding. One downfall is that it will pit of exposed to oxygen.

Alloy 22 – Alloy 22 is a CRA that is used for conditions that require resistance to oxidizing acid chlorides, wet chlorine, mixtures containing nitric acid or oxidizing acids with chlorine ions, formic and acetic acids, ferric and cupric chlorides, brine, salt water, and even reducing acids like sulfuric acid and hydrochloric acid.

ZERON® 100 – ZERON® 100 is highly resistant to both pitting and corrosion in the presence of salt water, stress corrosion cracking, and similar elemental conditions.

How to Recycle Scrap Metal in Indianapolis, Indiana

Call Zore’s Recycling at 317-244-0700 to recycle metal in Indianapolis, Indiana. Not only has Zore’s Inc. been a family owned and operated company for over 75 years, we pay cash on the spot for your metal commodities. We accept cans, sheet metal, appliances, vehicles, auto parts, equipment, and more! Request a free estimate, today.

The Four Categories of Steel

Metal Recycling Center 317-244-0700

Metal Recycling Center 317-244-0700

There are several styles, grades, and sizes of steel to choose from. In fact, one of the most common questions among steel consumers involves the different types of steel. In order to know which steel best suits your metalwork project, you must first understand their differences. If you were to ask the American Iron and Steel Institute (AISI), they would tell you that steel can be categorized into four basic groups according to their individual chemical compositions.

These four groups include carbon steel, alloy steel, stainless steel, and tool steel. All steel is composed of both iron and carbon, but vary in type depending on certain physical, chemical, and environmental properties; all of which are determined by the amount of carbon and any additional alloys. Below are the descriptions of the four categories of steel, and facts about each.

Carbon Steel

Carbon steel can be further categorized into three groups: 1) Low carbon, 2) Medium carbon, and 3) High carbon. Low carbon, also called mild steel, is one of the largest categories of carbon steel, and generally contains anywhere from 0.04% to 0.30% carbon content. Depending on its intended use, other additives and alloys can be added to create desired properties. Medium carbon generally contains anywhere from 0.31% to 0.60% carbon content, as well as, a range of 0.60% to 1.65% of manganese content. High carbon steel is informally known as “carbon tool steel” and contains 0.61% to 1.50% carbon content. It is difficult to manipulate, and becomes very brittle when heat-treated.

Alloy Steel

Alloy steel also contains carbon, since all steel contains both carbon and iron. But alloy steel also contains a marginal amount of additional elements, such as Nickle (Ni), Chromium (Cr), and Manganese (Mn). This type of steel is popular and commonly used due to their wide availability, economical costs, ease of processing, and quality mechanical properties. In comparison to carbon steel, alloy steel is more responsive to mechanical and heat treatments. Heated alloy steel comes in wither annealed or normalized.

Stainless Steel

Stainless steel contains added alloys that make is extremely resistant to corrosion in comparison to carbon and alloy steel. This is why it is commonly used in the medical/surgical industries, appliance industry, hardware manufacturing industry, food processing/handling industry, architectural industry, and more. It contains both carbon and iron, as mentioned before, but stainless steel generally contains other alloys as well, such as Chromium (Cr), Molybdenum (Mo), or Nickel (Ni).

Tool Steel

Tool steel is a general term to describe a variety of steels that retain high-hardness and abrasion-resistance properties. Specific applications for tool steel include stamping, extrusion, dies, cutting, mold-making, or impact applications (i.e. hammers).

Recycle Steel in Indianapolis

Indianapolis Metal Recyclers

Indianapolis Metal Recyclers 317-244-0700

Call Zore’s Recycling at 317-244-0700 to recycle steel in Indianapolis, Indiana. We pay cash on the spot for all steel scrap metal, and honor the highest returns in town based on current market prices for metal. We accept sheet metal, scrap metal, cars, trucks, power tools, construction equipment, appliances, electrical wiring, and more. Call 317-244-0700 to recycle metal in Indianapolis, IN today.