A.J. Oster Midwest

Carol Stream, Illinois

A.J. Oster Midwest began with the 1981 purchase of the Clark Brass and Copper Company, a 60-year-old metal processor headquartered in the Chicago area with branches throughout the Midwest. In 1989, construction began on new division headquarters at our current location in Carol Stream, Illinois which remains a regional market leader and a vital cornerstone of Oster’s national network of facilities.

Primary Products

  • Copper alloys
  • Aluminum sheet
  • Stainless steel
  • Cold rolled steel
  • CuVerro® antimicrobial copper


  • Precision slitting
  • Traverse winding
  • Cut-to-length
  • Edging (round and square)
  • Tinning and plating (mechanical wipe, hot air
    level tinning, electroplating, reflow tinning)
  • Decorative finishes
  • Polishing
  • Toll processing

Thickness Range

  • 0.002” – 0.130” (0.0508 – 3.302mm)

Width Range

  • 0.15” – 27” (3.81 – 685.8mm)


  • Trucks licensed to serve Illinois and Wisconsin
  • Truck freight and LTL options
  • High flow and customer pickup capabilities
  • International exporting and logistic expertise (Canada, Europe, UK, Asia)


  • In-house crating and packaging shop
  • IPPC (International Plant Protection Convention) insect free pallet options
  • Spool recycling/re-use programs
  • Desiccants, stretch wrapping, special coatings and barriers for delicate sheets


  • JIT (just-in-time) and kanban programs available, individualized to customer forecasts to manage inventory and ordering to ensure uninterrupted supply

Location & Contact

180 Alexandra Way
Carol Stream, IL  60188-2068
Phone:  630.260.1040 / 800.323.9644
Fax:  630-260-1102
Email:  osteril@ajoster.com

# Items: