4 Types of Metal That Do Not Rust

Metal is one of the most valuable, naturally-occurring resources on our planet. One of the reasons why metal has such great value to our society is due to its strength and durability. But even the strongest metals can be subjected to damage or oxidation. That is why it is important to use the right type of metal for your intended application. When it comes to applications that call for strong, rust-resistant metals, these four are your top choices.

Indiana Steel Recycling
Indiana Steel Recycling 317-244-0700

Metals That are Resistant to Oxidation (Rusting)

► Copper

We start with copper because many industry scholars and hobbyists argue that copper is not considered a noble metal because it is not technically corrosion-resistant. They often orate that because copper is such a reactive metal in the case of oxygen exposure, it is not a good fit for the definition of an anti-corrosive metal. Basically, copper will not rust because it does not contain any iron content, however, it can be subjected to certain deterioration when it reacts with oxygen. It does develop a green patina overtime, which will protect the copper from further corrosion.

Stainless Steel

There is a very good reason why the majority of all modern-day kitchens are equipped with stainless steel appliances, such as refrigerators, microwaves, dish washing machines, stoves, and even plumbing fixtures like faucets. The very good reason is that stainless steel will not rust when exposed to moisture or water, like many other kinds of metals would. Even though stainless steel usually does contain some traces of iron, which should technically make the steel prone to oxidation, they are mostly resistant because they contain high ratios of chromium. Chromium is more reactive than iron, so it quickly oxidizes, thus creating a protective chromium oxide coating on the stainless steel. Furthermore, stainless steel often contains other rust-resistant alloys, like nickel and molybdenum, strengthening its resistance against oxidation.

Aluminum

Aluminum metal is used in various industries and applications all across the globe, and it’s due to its two most valuable properties: light weight and resistance to corrosion. Commodities like airplanes, automobiles, bikes, building materials, and more are all manufactured with high aluminum content. The reason why aluminum is a terrific option for an anti-corrosion metal is because it contains very little, or even no iron content, making it stand up against conditions that cause rust. When exposed to moisture, a layer of aluminum oxide forms on the surface, protecting the metal from oxidation and corrosion.

 ► Galvanized Metal

Since steel metal is not naturally resistant to rusting, often times it must be galvanized for an added layer of protection. Galvanized carbon steel stands up well against conditions that commonly cause it to oxidize. Galvanization is the process of coating steel with zinc, which acts as a barrier against water and oxygen. This is known as cathodic protection. Like aluminum and chromium, the zinc reacts fast to oxygen, and creates a zinc oxide layer on the surface of steel.

How to Sell Your Rusty Steel and Iron Scrap Metal in Indiana

Call Zore’s Recycling division at 317-244-0700 to get paid cash on the spot with our Indianapolis metal recycling services and opportunities. We have been a family owned and operated company for over 75 years, and continue to make customer satisfaction our number one goal in our metal recycling division. And to make recycling easier for you, we offer several customer conveniences at no extra charge! Request a free estimate, today.

Indianapolis Metal Recycling
Indianapolis Metal Recycling

The Difference Between Stainless Steel and Mild Steel

Over the years of publishing blogs, we have covered the differences between a lot of metals. From ferrous and non-ferrous metal, to hot-rolled and cold-rolled steel, expanded metal and perforated metal, and a few more here and there. But today, we will cover a very basic level of metal acumen: the difference between stainless steel and mild steel.

Continue reading learn how these two types of steel compare to one another, as well as, how you can make some fast cash by recycling your steel scrap.

Steel Metal Recycling Center 317-244-0700
Indianapolis Steel Metal Recycling 317-244-0700

Steel Matters Because it is Useful and Reusable

Since steel is one of the most widely used metals in the world, it makes sense to learn all the facts surrounding its properties and applications. This is especially true for those who are confused on the different grades and sub-categories available. For instance, many consumers often wonder if there is a significant difference between mild steel and stainless steel. Continue reading to learn the various attributes and qualities of both of these metals.

Stainless Steel Properties

Stainless steel, also known as inox steel or just inox, is an 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.

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.

Properties of Mild Steel

Mild steel is also known as carbon steel, and as mentioned, has a much less chromium content than stainless grades. In fact, The American Iron and Steel Institute officially delineates carbon steel as having no more than 2% carbon, and no other appreciable alloying element. Regardless of its low chromium content, mild steel makes up the majority of the steel production industry around the world because it has such a wide scope of applications.

Mild steel is strong, firm, and ferromagnetic, which means it also contains iron. Because of these properties, mild steel is widely used in manufacturing motors and electrical appliances. On the other hand, carbon steel is less resistant to corrosion, which means it requires a protective treatment of galvanizing or coatings if its application places it in a corrosive environment.

A Comparison of the Two Steel Metals

When it comes to the primary differences between stainless steel and mild steel, it all comes down to strength, ductility, hardness, aesthetics, and cost. Stainless steel contains additional alloying elements, including chromium, nickel, and molybdenum, all of which enhances the mechanical and chemical properties and makes it resistant to corrosion. Mild steel is less brittle, but can be strengthened more by adding carbon.

How to Recycle Steel Scrap in Indianapolis and Make Cash on the Spot

Call Zore’s Recycling at 317-244-0700 to recycle scrap steel, or any of the other metals we recycle in Indianapolis, and make some fast money at the same time. We are a professional Indianapolis scrap metal recycling center that accepts and recycles all metals in any condition. Best of all, we PAY CASH ON THE SPOT! Recycle all sorts of stuff, including sheet metal and beams, cars, boats, construction equipment, power tools, old electronics, and more! Request a free estimate, today.

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.

Comparing Stainless Steel to Aluminum Metal

Since stainless steel and aluminum look so similar, many people believe they are the same type of metal. But this, of course, is not true. Although stainless steel and aluminum are used in similar industries, their qualities are different in many ways. Continue reading to learn some fun facts about both these metals, and the primary difference between them.

Metal Recycling Center 317-244-0700

Metal Recycling Center 317-244-0700

Stainless Steel

Stainless steel is a steel alloy used for several reasons, and in several industries. It is highly resistant to corrosion, tarnishing, and rust. The most common uses for stainless steel include food handling and processing, surgical instruments, medical devices, air crafts, appliances, hardware, and more. The common alloying ingredient in stainless steel is chromium, but nickel, copper, manganese, iron and molybdenum are also used. Stainless steel usually contains anywhere from 15% to 30% alloy content.

Aluminum

Aluminum is a silvery-gray, light-weight, non-magnetic metal used in countless industries and for several purposes. The most well-known use for aluminum is food and soda cans. But aside from canned goods, aluminum is also widely used in the automaker and aerospace industry for its ductile, corrosion-resistant qualities and more.

Comparisons

As for strength and weight, steel is stronger and weighs more. Aluminum is only one-third the weight of stainless steel, but this is why it is top-choice for automotive and aerospace manufacturing.

Both metals are highly-resistant to corrosion, but since stainless steel is non-porous, it is more resistant than aluminum.

Both metals are also good thermal and electrical conductors, but aluminum retains higher thermal conductivity. This is why it is used to manufacture things like car radiators and air conditioner units.

In terms of malleability, aluminum takes the cake. It is much softer and easier to work with compared to stainless steel. On the other hand, stainless steel is much easier to weld than aluminum.

As for price, aluminum is much cheaper.

Remember to recycle your unwanted scrap aluminum and steel metal!

Zore’s Recycling

Indianapolis Metal Recycling 317-244-0700

Indianapolis Metal Recycling 317-244-0700

Call Zore’s Recycling at 317-244-0700 to recycle aluminum in Indianapolis, as well as, all other metals you wish to discard. We accept all metals, including copper, steel, iron, precious metals, and more! Recycle old appliances, electronics, power tools, cars, water-crafts, and more for fast cash on the spot. We pay top-dollar for your scrap metal! Call 317-244-0700 to evaluate the worth of your scrap metal in Indianapolis, IN.