Alro logo Alro Steel was established in 1948 by Al and Robert Glick. Today, Alro is comprised of Alro Steel, Alro Metals, Alro Plastics and Alro Metals Outlet.

Alro Plastics Product: Lab 850 Red Pattern Board (High Density)

Lab 850

Size and Availability:

Sheet / Slab stock
- Thickness: 2”thk, 3”thk and 4”thk
- Sheet sizes: 20” x 60” and 24” x 60”
- Sheet color: Dark Red

Lab 850  Lab 850
Lab 850, also known as red pattern board, is a 72 – 74 lb. high density sheet/slab.

Red pattern board, also called foundry board, is a proven material for medium-volume foundry patterns, core boxes, grating and risers. Red Pattern board is a high density board that is also used for metal forming, stamping and stretch press dies.


  • Ease of machining
  • Great dimensional stability
  • Easily bonded and repaired
  • Easy surface finishing
  • Good temperature resistance


  • Precise checking fixtures
  • Large & small master molds
  • Prototypes
  • Patterns and molds
  • Stretch press dies
  • Nesting fixtures
  • Metal forming