Technology

Expanded Metal Classification: Type, Class, Grade

Expanded metal shall be of the following types, classes, and grades as specified.

Expanded metal type:

  • Type Ⅰ—Expanded
  • Type Ⅱ—Expanded and flattened
The picture shows dimensions of expanded metal.
EMCL-01: Type Ⅰ—Expanded
 The picture shows dimensions of expanded and flattened metal.
EMCL-02: Type Ⅱ—Expanded and flattened

Expanded metal class:

  • Class 1—Uncoated.
  • Class 2—Hot-dip zinc-coated (galvanized or galvannealed).
  • Class 3—Corrosion-resisting steel.

Expanded metal grade—Pertains only to post-galvanized or galvannealed coating.

  • Grade A—0.0025 in. (0.06 mm) minimum coating thickness.
  • Grade B—0.0012 in. (0.03 mm) minimum coating thickness.
Uncoated expanded metal details with raised surface and diamond holes.
EMCL-03: Uncoated expanded metal.
Stainless steel expanded metal details with raised surface and hexagonal holes.
EMCL-04: Stainless steel expanded metal.
Galvanized expanded metal details with flattened surface and diamond holes.
EMCL-05: Galvanized expanded metal.
Red expanded metal details with raised surface and diamond holes.
EMCL-06: Powder coated expanded metal.

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