Recycling symbol made of aluminum

TST, Inc. contributes to a cleaner tomorrow with environmental
protection and sustainability efforts.

TST Sustainability Profile

Since its founding in 1946 as a family-owned company based in Chino, California, TST has grown into one of the largest American producers of high-quality secondary aluminum cast plate, mold blocks, and specialty ingot and billet. TST utilizes a proprietary casting technology in its manufacturing process that requires fewer units of air, land, water, energy, and other scarce planetary assets to produce high-value aluminum for downstream users in the aerospace, semiconductor, and automotive industries among others. 

The company has more than 300 employees at its four locations in North America and manufactures and sells its products for domestic and export markets, including Canada, Mexico, and Asia. TST products utilize primary aluminum, including grades P0506, P0610, and P1020. They are manufactured in accordance with federal controls on air, land, and water use, as well as often more stringent California limitations.

Safety and health protections for employees also contribute to the preferred ability of TST products compared to foreign and some domestic competitors. A 2022 study by the Aluminum Association confirmed that per metric tonne, secondary aluminum production used only 6% as much airshed capacity for residual greenhouse gases as primary aluminum (527 vice 8,585 kg CO2 equiv./tonne Al) as the Figure depicts. This important sustainability factor is only one of several that can be used to better market secondary aluminum, especially to companies such as Intel that assiduously track and count geo-capital use data.

TST in the News

Magazine cover for Scrap Recycling featuring two men from Hydrova a TST partner

Earlier this year, Hydrova announced a partnership with secondary aluminum producer TST Inc. to produce aluminum ingots using salt and aluminum recovered from dross, generating hydrogen during the recovery process. The achievement was welcomed by TST, which produces 3,000 metric tons of secondary aluminum ingot for the automotive industry per month through its TIMCO division and 3,000 metric tons of forging billet for the aerospace and semiconductor industries per month through its TANDEM division.

“Being in Southern California, we have to take a lead in technology that can improve the environment,” TST President and CEO Andrew G. Stein says. “We are always looking for new ideas,” particularly as the state tightens its environmental regulations, he adds.

Read more about TST’s latest initiative to improve sustainability: here


Aluminum is increasingly identified and recognized as a “green product” in major markets. The high-quality, American-made aluminum products of TST made from recycled content are a foremost example of an environmentally preferable product.  In addition, the following are areas that TST has incorporated to support sustainable business activities:

  • More utilization of scrap to produce new products
  • Purchase of solar and nuclear-generated electricity
  • Solar self-generation of electricity where feasible
  • Utilize waste flue gases to minimize carbon fuels
  • Recycle waste products
  • Utilize new unproven electrically powered furnaces for melting and homogenizing