Your selection
Microfiber MicroHi-Temp 32 kg/m³ · 50 mm · 1.22 × 10 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 10000
Microfiber MicroHi-Temp high-temperature glass wool
Glass wool for hot surfaces; the maker states an operating temperature up to 540 °C (ASTM C411). For wrapping tanks, pipes and equipment such as kitchen hot-air ducts, oven walls and boiler walls.
- Thickness
- 50 mm
- Density
- 32 kg/m³
- Maximum service temperature
- 540 °C ASTM C411
Choose model and size
No size chosen yet
Answer every step above to ask about that exact item, or ask without choosing.
Ask about this productYour selection
Microfiber MicroHi-Temp 32 kg/m³ · 50 mm · 1.22 × 2.44 m
- Thickness (mm)
- 50
- Density (kg/m³)
- 32
- Width (mm)
- 1220
- Length (mm)
- 2440
See all models and sizesManufacturer documentsTechnical specifications
Product details
Glass wool HT-1000, rolls and boards · operating temperature up to 540 °C
- Thickness
- 50 mm
- Density
- 32 kg/m³
- Maximum service temperature
- 540 °C ASTM C411
- Thermal conductivity (λ)
- 0.035 / 0.033 / 0.031 W/m·K 24 / 32 / 40 kg/m³ at 24 °C mean (test standard not stated)
What is it?
MicroHi-Temp HT-1000 from Microfiber is a glass wool for reducing heat loss from hot surfaces, made as rolls and boards in 24, 32 and 40 kg/m³. The maker states it is made to ASTM C612 and tested to ASTM C411 at 540 °C. Used on kitchen hot-air ducts, oven walls, boiler walls and industrial equipment.
What is it made of?
Glass wool (fibreglass) · Facing: FR facing with 3-way glass-fibre reinforcement (double-sided foil is a special facing — enquire with the maker) · Roll
Which sizes are available?
Thickness 50 mm · 32 kg/m³ — Choose a size
Where does the data come from?
MicroHi-Temp datasheet (MI 04/12)
Technical data from the manufacturer's documents Microfiber · Checked 12 Oct 2026
Technical specifications
All values come from the manufacturer's documents, with conditions and test standards. Values the documents do not state are not shown.
| Property | Value | Conditions / standard | Source |
|---|---|---|---|
| Maximum service temperature | 540 °C | ASTM C411 | MicroHi-Temp datasheet (MI 04/12), p. 1 |
| Thermal conductivity (λ) | 0.035 / 0.033 / 0.031 W/m·K | 24 / 32 / 40 kg/m³ at 24 °C mean (test standard not stated) | MicroHi-Temp datasheet (MI 04/12), p. 2 |
| k at 100 / 200 / 300 °C mean | 24K: 0.049 / 0.088 / 0.152 · 32K: 0.046 / 0.074 / 0.129 · 40K: 0.043 / 0.063 / 0.104 W/m·K | — | MicroHi-Temp datasheet (MI 04/12), p. 2 |
| Density | 24 / 32 / 40 kg/m³ | ASTM C167 | MicroHi-Temp datasheet (MI 04/12), p. 1 |
| Reaction to fire | Flame Spread 25 · Smoke Developed 50 | ASTM E84 | MicroHi-Temp datasheet (MI 04/12), p. 1 |
| Water vapour sorption | 0.1% or less by volume | ASTM C1104 | MicroHi-Temp datasheet (MI 04/12), p. 1 |
| Standards / certification | TIS 486, 487 · ASTM · UL · NFPA 90A | — | MicroHi-Temp datasheet (MI 04/12), p. 1 |
Models and sizes available
| Model | Thickness (mm) | Density (kg/m³) | Width (mm) | Length (mm) |
|---|---|---|---|---|
| Roll 32K 50 mm | 50 | 32 | 1220 | 10000 |
| Board 32K 50 mm | 50 | 32 | 1220 | 2440 |
Pack quantities and prices — ask us on LINE
Applications
FactoriesFactory roofs, machine noise and hot pipeworkAir-conditioning (HVAC)Ducts, refrigerant lines and HVAC noisePipesAC, chilled-water, hot-water and steam pipes
Highlights
- Operating temperature up to 540 °C per the maker
- Rolls and boards
- k published at 24–300 °C mean
Manufacturer documents
Related products
Alternatives
Industrial and high-temperature insulation · Stone wool
ROCKWOOL ProRox BL
- Max. temp.
- 350–650 °C
- Density
- 60–100 kg/m³
- Thickness
- 50–100 mm
Industrial and high-temperature insulation · Stone wool
ROCKWOOL ProRox SL
- Max. temp.
- 450–850 °C
- Density
- 60–160 kg/m³
- Thickness
- 50–100 mm
Industrial and high-temperature insulation · Ceramic fibre
3T MINEWOOL Ceramic Fiber Blanket
- Service temp.
- 1,050–1,350 °C
- Density
- 128 kg/m³
Used together
Installation accessories · Tape
3T INSU-TAPE Aluminium Tape
- Width
- 50 / 63 mm
- Length
- 45 m
- Service temp.
- -20 – 120 °C
Helpful before you choose
Not sure which model suits your job?
Send the area details or site photos — we'll suggest the model and quantity
Ask via LINE