Knauf ET Board
Description
Knauf Elevated Temperature Board 850° is a lightweight
insulation (2.8 PCF, 44.9 kg/m3) made from inorganic glass fibers
bonded with a high-temperature thermosetting resin. It is a
semi-rigid, board-like form with superior handling properties and
insulating effectiveness at minimum cost.
Application
Knauf Elevated Temperature Board 850° is used for boiler
walls, hot precipitators, hot ductwork, cylindrical tanks, towers,
stacks, and industrial ovens.
Features and Benefits
Excellent Thermal Properties
Low Installed Cost
- Lightweight.
- Easy to fabricate.
- Sizes up to 4' x 10' available.
Polybag and Sleeve Packaging
- Damage resistant.
- Reduces storage space.
Resilient Fiber Glass
- Maintains integrity at elevated temperatures.
Specification Compliance
In U.S.:
- ASTM C 612; Type IA, IB, II
- ASTM C 795
- HH-I-558C (Amend. 3); Form A, Class 1, 2, 3
- MIL-I-22023D; Type III
- MIL-I-24244C
- NRC Reg. Guide 1.36
- USCG 164.109/15/0
In Canada:
- CAN/ULC S102-M88
- T.C.270.F1.315
- CGSB 51-GP-10M
Technical Data
Surface Burning Characteristics
- Does not exceed 25 Flame Spread, 50 Smoke Developed when tested
in accordance with ASTM E 84, CAN/ULC S102-M88 and UL 723.
Temperature Limitation (ASTM C 411)
Alkalinity (ASTM C 871)
Corrosiveness (ASTM C 665)
- Will not accelerate corrosion of steel.
Resistance to Microbial Growth (ASTM C 1338)
Application and Specification Guidelines
Precautions
- During initial heat-up to operating temperatures above 350°F
(177°C), a slight odor and some smoke may be given off as a portion
of the bonding material used in the insulation begins to undergo a
controlled decomposition.
- If natural convection is not adequate in confined areas, forced
ventilation should be provided in order to protect against any
harmful fumes and vapors that might be generated.
Storage
- Protect material from water damage or other abuse. Cartons are
not designed for outside storage. Vacuum packaged material can be
stored outside if care is taken not to puncture the polybag.
Preparation
- Apply the product on clean, dry surfaces.
Application
- All insulation joints must be firmly butted. Mount flush
against surfaces to 850°F (454°C) or use in panels mounted away
from operating surface.
- Knauf ET Board 850° is designed to be applied over welded pins
and/or studs up to 1/2" (13 mm) in
diameter. The board is to be held in place by speed washers,
tension clips, or metal mesh reinforcement.
- Installation method should not compress material beyond maximum
5% at any point.
- Pins and studs shall be located a maximum of 4" (102 mm) from
each edge and spaced no greater than 16" (406 mm) on center.
- Dual-layer installation with staggered joints is recommended
for applications where temperatures meet or exceed 550°F (288°C)
and designed thickness is over 3" (76 mm).
- Finish surface with metal cover, or with insulating cement and
canvas.
Caution
Fiber glass may cause temporary skin irritation. Wear
long-sleeved, loose-fitting clothing, head covering, gloves, and
eye protection when handling and applying material. Wash with soap
and warm water after handling. Wash work clothes separately and
rinse washer. A disposable mask designed for nuisance type dusts
should be used where sensitivity to dust and airborne particles may
cause irritation to the nose and throat.
Notes
The chemical and physical properties of Knauf ET Board 850°
represent typical average values determined in accordance with
accepted test methods. The data is subject to normal manufacturing
variations. The data is supplied as a technical service and is
subject to change without notice. References to numerical flame
spread ratings are not intended to reflect hazards presented by
these or any other materials under actual fire conditions. Check
with your Knauf regional office to assure information is
current.
THERMAL EFFICIENCY (ASTM C 177)
|
Mean
Temperature
|
Mean
Temperature (SI)
|
k |
k (SI) |
| 100°F |
38°C |
.25 |
.036 |
| 200°F |
93°C |
.33 |
.048 |
| 300°F |
149°C |
.40 |
.058 |
| 400°F |
204°C |
.49 |
.071 |
| 500°F |
260°C |
.57 |
.082 |
FORMS AVAILABLE
|
Thickness |
Width |
Length |
|
1"
(25 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |
|
11/2"
(38 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |
|
2"
(51 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |
|
21/2"
(64 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |
|
3"
(76 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |
|
31/2"
(89 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |
|
4"
(102 mm)
|
24" and 48"
(610 mm and 1219 mm) |
24" to 120"
(610 mm to 3048 mm) |