Millboard Sheets | McMaster-Carr

	Thickness Thickness

1/16"

1/8"

3/16"

1/4"

3/8"

	Width Width

39"

55"

	Length Length

39"

55"

	Maximum Temperature Maximum Temperature

1380° F

2000° F

	Material Material

Fabric

Ceramic

	Heat Flow Rate Heat Flow Rate

0.81 Btu @ 750° F

0.73 Btu @ 800° F

	Density Density

37.5 lbs./cu. ft.

59 lbs./cu. ft.

	R Value R Value

	Color Color

	Off-White
	White

	DFARS (Defense Acquisition Regulations Supplement) DFARS (Defense Acquisition Regulations Supplement)

DFARS Specialty Metals
COTS-Exempt

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About Selecting Thermal Insulation

Thinner than most rigid insulation for furnaces and other high-heat applications, these millboard sheets are also used for gasket fabrication. Insulation performs best at temperatures above 1000° F.

1380° F Max. Temperature

Heat Flow Rate: 0.81 Btu @ 750° F
Density: 59 lbs./cu. ft.
Color: Off-White

Thick.	Wd.	Lg.	R Value	Flexibility		Each
1/16"	39"	39"	0.1	Rigid	0000000	000000
1/8"	39"	39"	0.2	Rigid	0000000	00000
3/16"	39"	39"	0.2	Rigid	0000000	00000
1/4"	39"	39"	0.3	Rigid	0000000	00000
3/8"	39"	39"	0.5	Rigid	0000000	000000

2000° F Max. Temperature

Heat Flow Rate: 0.73 Btu @ 800° F
Density : 37.5 lbs./cu. ft.
Color: White

Thick.	Wd.	Lg.	R Value	Flexibility		Each
1/16"	55"	55"	0.1	Rigid	0000000	000000
1/8"	55"	55"	0.2	Rigid	0000000	000000
3/16"	55"	55"	0.3	Rigid	0000000	000000
1/4"	55"	55"	0.3	Rigid	0000000	000000

Over 48,000 metals now include traceable material certificates.

About Selecting Thermal Insulation

Ultra-Thin Rigid Millboard Insulation Sheets for Furnaces

Ultra-Thin Rigid Millboard Insulation Sheets for Furnaces