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: PHENOLIC XX (Paper Based)

Phenolic XX

Size and Availability:

Sheet / Slab stock
- Thickness: 1/16”thk to 4”thk standard
- Sheet sizes: 48”x 120”, 48”x 96”, 48”x 48”, 36”x 48”

Rod / Solid Rounds
- Diameters: 1/16” to 2-1/4”Dia.
- Lengths: 2 ft to 4 ft standard lengths

Tubing / Hollow Rounds
- Diameters: 3/16”OD x 1/8”ID up to 2.50”OD x 1.50”ID
- Lengths: 2 ft to 4 ft standard lengths

Phenolic XX  Phenolic XX
Phenolic XX (NEMA XX) is a paper based phenolic that is a machining grade with less robust electrical properties than those of Phenolic XXX (Phenolic XXX - not stocked, but can be special ordered). Designed for electrical insulation, the product can be used in dry or high humidity conditions.

Applications include barriers, breaker arms, switch panel boards, and relay and switch bases.

This product meets the requirements of MIL-I-24768/11, Type PBG.


  • Extremely high mechanical strength
  • Low water absorption
  • Superior electrical characteristics
  • Good machinability


  • Terminal boards
  • Washers
  • Sleeves
  • Structural components