Quality is our Priority

Our quality lab is responsible for making sure our facility is running within the set parameters on a daily basis.  The lab is equipped to perform Loss on Ignition (LOI) , mold strength and surface hardness tests.  The results of these tests can be sent to you weekly in the form of an excel spreadsheet or a control chart.  The lab is also responsible for calibrating all of our measuring equipment.  All of these devices are on either a monthly, bi-yearly or yearly cycle.

About Us

Supreme Cores, Inc. is one of the countries original “core shops” started in 1978 in Janesville, Wisconsin by Warren Grossmann. We are now in our 34th year serving as a “Friend to the Foundry Industry”. Over the years, we have evolved into the “Supreme” leader of supplying cores and molds to the Foundry Industry in the U.S. and even locations in Canada.

Mission Statement

Supreme Cores is committed to working with our customers to provide cores/molds at a mutually agreed upon price with on-time delivery, at a level of service and quality that enhances the customers ability to sell the highest quality castings. Our customers appreciate the “Supreme” experience and relationship that you will not find with another vendor.

We understand that to be successful means working hard with mind and body to achieve the goals set forth for the benefit of our customers, our employees and our community.

Get a Quote Today!

Supreme Cores would like to hear from you. If you have a question or you’d like to place an order, give us a call 414-353-7100 or visit our contact page to send an email. Orders can be placed by fax, email, or through the website.