Metapor Aluminum Bars | McMaster-Carr

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Lead-Free Pewter Alloy

Polycrystalline Diamond

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Thermoforming Molding

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12 Products

About Aluminum

Compare over 20 aluminum alloys to find the right material for you—all with material certificates for traceability.

Air-Permeable Mold-Quality Metapor Aluminum Sheets

Create vacuum-forming and thermoforming molds without vacuum channels or holes. The pores in Metapor aluminum evenly distribute a vacuum and release air and moisture, so bubbles and blemishes won’t form. You need to mill the aluminum to expose the pores.

Temper Designation	Porosity	Pore Dia.		Each







10 mm Thick (-2 mm to 2 mm Tolerance)

150	150	Cast	Not Rated	15%	0.0006"	8189K52	0000000


250	250	Cast	Not Rated	15%	0.0006"	8189K32	000000
500	500	Cast	Not Rated	15%	0.0006"	8189K51	000000




		15 mm Thick (-2 mm to 2 mm Tolerance)

		150	150	Cast	Not Rated	15%	0.0006"	8189K54	000000


		250	250	Cast	Not Rated	15%	0.0006"	8189K529	000000
		500	500	Cast	Not Rated	15%	0.0006"	8189K53	00000000




				30 mm Thick (-2 mm to 2 mm Tolerance)

				150	150	Cast	Not Rated	15%	0.0006"	8189K56	000000


				250	250	Cast	Not Rated	15%	0.0006"	8189K31	000000
				500	500	Cast	Not Rated	15%	0.0006"	8189K57	00000000




						50 mm Thick (-2 mm to 2 mm Tolerance)

						150	150	Cast	Not Rated	15%	0.0006"	8189K58	000000


						250	250	Cast	Not Rated	15%	0.0006"	8189K34	000000
						500	500	Cast	Not Rated	15%	0.0006"	8189K63	00000000