KT Metal Castings Blogs

Binders are substances mixed with sand that hold sand particles together, creating a stable mold strong enough to withstand molten metal. Without binders, sand grains would scatter and collapse, making casting impossible. The binder must grip sand particles firmly enough to maintain mold shape during metal pouring, yet release easily…

Sand casting is an industrial process where molten metal pours into a mold made from sand and binders, then cools to form the finished part. The metal you choose directly affects your part’s strength, cost, weight, and ability to resist corrosion or heat. Industries use sand casting to manufacture everything…

Your reclaimed foundry sand is an asset worth protecting. Every ton you reprocess represents material cost savings and reduced landfill expenses, but only if it meets the strict specifications your casting operations demand. Quality testing catches problems before they reach your molding floor. A single day of production delays from…

Foundry sand is clean, uniformly sized silica sand used to form molds and cores for metal casting. The sand grains are coated with bonding agents like bentonite clay or chemical resins that hold the mold shape when you pour molten metal into it. The term “foundry sand” specifically refers to…

Reclaimed sand is foundry sand that’s been used to make casting molds and then cleaned and processed to use again. Foundries recover up to 90% of their molding sand through reclamation systems, turning what would be waste into a valuable material that performs nearly as well as virgin sand. The…

You’re choosing between reclaimed sand and new sand for your casting operations, and the decision affects your production costs, casting quality, and waste management strategy. Reclaimed sand costs $1-8 per ton to process compared to $40-80 per ton for new sand, but you’ll need to understand how processing affects performance…

Sand reconditioning reduces your foundry’s operating costs by 60-90% while maintaining consistent casting quality. This process removes binders and contaminants from used molding sand so you can reuse it for subsequent casting operations. You’re managing costs while meeting production demands. Reconditioning sand addresses both challenges by recycling over 90% of…

6061 aluminum alloy is the workhorse of the structural aluminum world. Introduced in 1935 as “Alloy 61S,” it’s become the go-to general-purpose aluminum across virtually every major industry—and there’s a reason. This medium-to-high strength precipitation-hardened alloy delivers impressive mechanical strength, corrosion resistance that actually works in real environments, weldability that…

Type 304 stainless steel offers better corrosion resistance and weldability, while 302 provides higher strength for applications like springs and fasteners. If you’re working with food equipment, doing extensive welding, or need general-purpose corrosion resistance, choose 304. If you need high-strength wire, springs, or cold-worked parts with minimal welding, choose…

GGG stands for “Kugelgraphitguss” (German for spheroidal graphite cast iron), and 50 refers to the minimum tensile strength of 50 kg/mm²(500 MPa). Originally designated under the German DIN 1693 standard, this material gets its name from its minimum tensile strength of 50 kg/mm². It’s now commonly known as EN-GJS-500-7 under…