MicroFiber High Temperature Glass Wool Insulation Hi-Temp Series

Micro Hi-Temp

Micro Hi-Temp glass wool insulation is designed for high-temperature applications up to 350°C, suitable for boilers, ovens, and high-temperature machinery

Thermal Conductivity

In heat resistance applications, thermal conductivity is crucial. To prevent heat loss, choose insulation with low thermal conductivity – the closer to 0, the better

Micro Hi-Temp Thermal Conductivity Table

Mean Temperature	Thermal Conductivity (W/m.K)
	32 kg/m3	40 kg/m3
100	0.046	0.041
150	0.059	0.049
200	0.074	0.058
250	0.098	0.068
300	0.129	0.080

Water Vapor Absorption

In industrial heat applications, water and moisture can damage thermal insulation. When water and moisture penetrate insulation, they reduce efficiency and increase weight, potentially causing detachment

However, MicroFiber glass wool has been tested for water absorption according to ASTM C411 standard. Test results show water absorption of < 1%, which is very low. When water drops fall on MicroFiber glass wool, they don’t penetrate but form beads on the surface and naturally evaporate

Surface Flame Spread

NFPA (National Fire Protection Agency) standard NFPA 101 Life Safety Code requires material classification into Class A, B, C, tested according to NFPA 255, ASTM E84, or UL 723

Testing provides two values: Flame-Spread Index (FSI) and Smoke Development Index (SDI), and materials are classified based on these values.

Material Classification Table for Surface Fire Spread According to ASTM E84

	Flame-Spread Index (FSI)	Smoke Development Index (SDI)
Class 1 or Class A	0 – 25	450 Maximum
Class 2 or Class B	26 – 75	450 Maximum
Class 3 or Class C	76 – 200	450 Maximum

According to the ASTM E84 surface fire spread classification table, MicroFiber glass wool insulation is classified as Class 1 or Class A with Flame-Spread Index < 25 and Smoke Development Index < 50.

Product Size Table

Micro Hi-Temp Roll Type Size Table

Density (Kg/m3)	Thickness (mm)	Size (W x L)
32	50	1.22 x 10.0
	75	1.22 x 7.50

Micro Hi-Temp Board Type Size Table

Density (Kg/m3)	Thickness (mm)	Size (W x L)
32	50	1.22 x 2.44
	100	1.22 x 2.44
40	25	1.22 x 2.44
	50	1.22 x 2.44
	75	1.22 x 2.44
	100	1.22 x 2.44

Technical Data Table

Features	MicroCover	Test Standard
Operating Temperature	350°C	ASTM C 411
Maximum Surface Temperature	540°C	ASTM C 177
Density	32 kg/m3, 40 kg/m3
Water Vapor Absorption	< 1.0% by volume	ASTM C1104
Mold and Fungus Growth	Does not promote mold and fungus growth	ASTM C665
Fire Reaction	Class A1	EN 13501-1
Surface Burning Characteristics	Flame Spread < 25 Smoke Development < 50	ASTM E84