Alro logo Alro Steel was established in 1948 by Al and Robert Glick and has grown to include Alro Plastics, Alro Industrial Supply and Alro Metals Outlet.

Alro Plastics Product: Precision Board Plus

Size and Availability:

Sheet / Slab stock
- Thickness: 1/4” to 24” thick
- Sheet sizes: 20” x 60”, 24” x 60”, 30” x 80”, 45” x 60” 48” x 96”, 48” x 120”, 60” x 96”, 60” x 120”
- Densities: 4lb, 6lb, 8lb, 10lb, 12lb, 15lb, 18lb, 20lb, 30lb 34lb, 40lb, 48lb, 60lb, 70lb and 75lb.

- Sheet color: Off-White

Precision Board Plus High Density Urethane is a “closed cell” rigid polyurethane product. It is available in a wide range of standard sheet sizes and standard densities and can be cut or bonded into a variety of shapes for final machining and shaping. Precision Board Plus is made from 23.9% rapidly renewable resources, with a carbon footprint of 3:1, so you can be confident that one of the most dimensionally stable substrates for a variety of tooling applications is also an environmentally friendly one.

Precision Board Plus is available in two grades, PBLT (Low Temperature) and PBHT (High Temperature). PBLT is designed for applications that are 200oF and below while PBHT is designed for applications 200oF and above.


  • Less dust, more chips for better working environment
  • Does not out-gas and will not affect prepreg cure
  • Closed cell structure – Won’t absorb anything
  • Easily cut or machined with standard cutting tools
  • Meets flammability burn test requirements of ASTM D-1692-74, Far 25.853, Mil-P-26514 & ASTM D635


  • Prototype machining
  • Thermoforming
  • Tool proofing
  • Master model making
  • Pattern making
  • Vacuum form tooling
  • Sculptures & Carvings

Materials Selection Guide:

Precision Board Plus Materials Selection Guide