Stainless Steel: How it is Made

Stainless steel sheetToday we are taking a turn from carbon to discuss stainless steel. This type of steel is widely used. Chances are you own at least a few appliances that are made of stainless. I know my refrigerator is.

Stainless steel comes in many different types. At Metalwest we supply two main types of stainless-Austenitic and Ferritic.

Austenitic is the most common of the stainless steel types. This includes the 200 and 300 series. The alloy contains a minimum of 16% chromium and is also composed of a significant amount of nickel and manganese (here is a link to a periodic table in the off chance you don’t know what I am talking about).

Austenitic stainless has excellent corrosion resistance, good ductility, non-magnetic properties, strength and weldability.

The most common type of austenitic stainless is type 304 due to its corrosion resistance to a wide range of industry exposures. This makes it ideal for foodservice equipment or any application where sanitation is required.

Ferritic alloys have lower corrosion resistance than austenitic alloys due to lower chromium (10.5-27%) content. This includes some of the 400 series of stainless, including 409 and 430. Ferritic stainless has good corrosion resistance, high strength and great workability.

How Stainless Steel is Made

“OK, great. So… how is it made?”

I’m getting there dear Buzz readers. We had to cover the basics first. Here we go…

stainless steel mining cartMining

The process of making stainless steel begins with extracting chromite (an iron chromium oxide) from underground mines. It is then crushed to produce a chromite concentrate. This is what makes stainless steel strong and corrosion resistant.

You wouldn’t want a stainless steel refrigerator that doesn’t hold up and corrodes, right? The product’s ability to hold up is the basically the point of buying stainless-aside from the appealing surface finish, of course.


The next step is to melt the chromium pellets together in an electric furnace with the other raw materials (iron ore, manganese, nickel, etc.) used for the specific stainless type. After melting, the material is formed into slabs and transferred to a hot rolling mill.

stainless steel roughing millHot Rolling

Once the slab arrives at the hot rolling mill it is transferred to another furnace and the hot material is then sent through a roughing mill. At the roughing mill it is rolled forwards and backwards to reduce the thickness. As the thickness is decreased it causes the slab to become a long strip that will later be wound up into a coil.

The long strip, or band, is passed through additional rolling mills to reduce the thickness even more. At this point it is coiled then cooled by water and transferred to a cold rolling mill.

Cold Rolling

When the material arrives from the hot rolling mill it is covered in a black scale (which we defined while discussing how hot rolled is made).

At the cold rolling plant the material is uncoiled and passed through an annealing and pickling line to remove the black scale. The band is then reduced to the thickness specified by the customer and recoiled.

The coiled material is sent through another annealing and pickling process and rinsed with water.


“OK, then what happens?”stainless steel delivery train

Well, the stainless steel material goes through one final finishing step of removing the tension and improving the overall surface finish. The finished stainless is cut to the specified dimensions and shipped to customers around the world via train or barge.

railcar unloading coilSkip prefers the train, as he gets sea sick.

When we receive the material we process it further to ensure our customers are getting the product they need.

Our Core Values: It’s Who We Are

ofr metals team and family, core valuesValues. They mean different things to different people. To us, they mean more than words on a placard in our lobbies. Our core values reflect our company, our employees, and our customers. As a company, our core values are the heart of everything we do. To our employees, value means contribution and commitment to our customers. To our customers, it could mean the usefulness of our products and services or the trust and loyalty of a company.

At Metalwest we have seven core values

Devotion to Excellence

We encourage our employees to strive to be the best they can be both inside and outside of the organization. We also strive to be the best company we can be. Being in the steel service industry the name says it all. Service. We believe in providing excellent customer service to all of our customers in everything we do.

Empowerment and Accountability

We empower our employees to do what it takes to get the job done and encourage our employees to be accountable for the outcome of the task.


We support team work and a team spirit to ensure our employees are more powerful, effective and fulfilled. Go team Skip!

Win-Win Relationships

What goes around comes around and we believe that to be the most successful we need to have allies in our customers, our employees, and our suppliers. I mean, we are family right?


Abiding by moral and ethical principles along with basic human decency in all aspects of our business and personal relationships.

Innovation and Creativity

Creativity among our employees is encouraged. We believe the status quo should be challenged and new ideas should be shared freely. After all, innovative solutions are part of our brand benefits.


Last, but not least, we believe in having fun. We want our employees to enjoy coming to work, to enjoy the individuals they work with, and to be able to laugh together. It’s contagious.

So, why did I share our core values with you? I think it is important to share the culture of a company with its customers. It’s important to show you who Metalwest is, not what. After all, “we’re not about steel, we’re about people.”