Ecoflex® 400 Sustrate Support Mat (PDF) - Unifrax

Product Information Sheet
Ecoflex ® 400
Substrate Support Mat
Introduction
Unifrax is pleased to introduce Ecoflex ® 400,
the newest member of the Ecoflex support mat
product family specifically developed for
mechanical support of ceramic substrates
used in emission control systems.
Ecoflex 400 utilizes M-FIL ® polycrystalline
fibers which have a proven history of long-term
performance under all inlet gas temperatures up
to 1050°C. It also provides superior erosion
resistance, allowing it to provide robust design
solutions without the need of wire-mesh rings or
any other type of edge-treatment.
Ecoflex 400 is flexible, has excellent
handleability and is easy to assemble through
a broad range of different canning techniques.
Ecoflex 400 is compatible with cordierite, ultrathin
wall (UTW), silicon carbide (SiC), and
alumina titanate (AT) substrates.
The unique handling characteristics and proven
long-term performance offered by Ecoflex 400
makes it the ideal solution for a wide range of
emission control devices, including diesel oxidation
catalysts (DOC), diesel particulate filters (DPF),
selective catalyst reduction units (SCR), and
underbody converters (gasoline, diesel and
ethanol flex fuel).
Ecoflex 400 is not affected by fuel condensates
and/or urea.
Product Availability
Basis Nominal Nominal
Weight* Thickness** Installed Gap
(g/m 2 ) (mm) (mm)
1200 7.7 3.0
1600 10.3 4.0
1800 11.6 4.5
2400 15.5 6.0
3200 20.6 8.0
*Basis Weight: Fiber + Binder
**Thickness measured @ 0.725 kPa
Additional basis weights available upon request.
Typical Composition & Properties
M-FIL ® Polycrystalline
Fibers 92.5 – 94.5 %
Loss on Ignition 5.5 – 7.5%

Canning Performance
Ecoflex 400 is typically installed at a nominal gap bulk density (GBD) of 0.40 g/cm 3 . The room temperature
compression behavior of Ecoflex 400 is shown in Figure 1. The GBD range for each specific application will be
defined according to the requirements for holding force and substrate strength.
Pressure [kPa]
1400
1200
1000
800
600
400
Ecoflex 400 – Peak
Ecoflex 400 – Residual
Ecoflex 200FL – Peak
Ecoflex 200FL – Residual
Typical Cold Compression Curve
Ecoflex 400 Substrate Support Mat
200
0
0.30 0.34 0.38 0.42 0.46 0.50
GBD [g/cm 3 ]
Figure 1: Typical Cold Compression Curve for Ecoflex 400 support mat.
Erosion Resistance
Support mat erosion may occur as a result of improper support mat installation or due to lack of holding force of
the fiber matrix. Different types of support mat are more susceptible to erosion than others. Ecoflex 400 has been
designed specifically to present a low erosion profile. Figure 2 presents comparative erosion resistance for different
support mat types as a function of GBD.
Volume Loss [cc]
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
Comparative Erosion Performance
Ecoflex 400 Substrate Support Mat vs. Exoflex 200FL Substrate Support Mat
Ecoflex 400
Ecoflex 200FL
0.00
0.24 0.28 0.32 0.36 0.40
GBD [g/cm 3 ]
Figure 2: Comparative erosion data for Ecoflex 400 support mat.
Form C-3139
Effective 6/13
© 2013, Unifrax I LLC
All Rights Reserved
Printed in USA
Page 2 of 4

Friction Performance Data
Friction between the mat and opposing surfaces has an influence on canning characteristics and long-term
robustness in the converter. Unifrax measures the friction coefficient between the support mat and the shell at room
temperature (important during canning) and also at different operating temperatures (which is important after the
converter is under normal operating conditions). Figure 3 presents Ecoflex 400 performance at room temperature
against stainless steel.
Coefficient of Friction
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
Ecoflex 400
Ecoflex 200FL
Typical Friction Coefficients vs. Stainless Steel
Typical Performance
0
0.20 0.25 0.30 0.35 0.40 0.45 0.50 0.55 0.60
GBD [g/cm 3 ]
Figure 3: Comparative cold friction data for Ecoflex 400 support mat.
Support Mat Aging Performance
Ecoflex 400 is designed to provide robust performance over a broad range of operating conditions. It is especially
adapted to provide superior performance in high gap expansion conditions that may be common in heavy-duty
diesel applications. Figure 4 presents typical aged mat performance for Ecoflex 400 and shows its advantages.
Factors such as design gap and operating temperature also influence support mat performance. Please contact our
Application Engineering Department for additional information regarding the performance of Ecoflex 400 under
specific operating conditions.
Aged Mat Pressure (kPa)
100
80
60
40
20
0
Ecoflex 400
Ecoflex 200FL
Aged Mat Pressure at 600°C / 12% RGE
Isothermal
0.30 0.45 0.60
GFD [g/cm 3 ]
Figure 4: Ecoflex 400 support mat aging test as a function of temperature.
Form C-3139
Effective 6/13
© 2013, Unifrax I LLC
All Rights Reserved
Printed in USA
Page 3 of 4

Worldwide Technical Support
Unifrax is a worldwide sales and service organization with several international locations and representatives.
The services that we provide include thermal modeling, system design engineering assistance, and failure
analysis as well as technical exchange programs. For additional information regarding Ecoflex 400 or any of
our catalytic support mats, please contact the Unifrax Emission Control Application Engineering Department
at aecoordinator@unifrax.com.
Data are average results of tests conducted under standard
procedures and are subject to variation. Results should not
be used for specification purposes.
Refer to the product Safety Data Sheet (SDS) for
recommended work practices and other product safety
information.
Form C-3139
Effective 6/13
© 2013, Unifrax I LLC
All Rights Reserved
Printed in USA
Page 4 of 4
The following are registered trademarks of Unifrax I LLC: Ecoflex and M-FIL.
The test data shown are average results of tests conducted under standard procedures and are subject to variation. Results should not be
used for specification purposes.
Product Information Sheets are periodically updated by Unifrax. Before relying on any data or other information in this Product Information
Sheet, you should confirm that it is still current and has not been superseded. A Product Information Sheet that has been superseded may
contain incorrect, obsolete and/or irrelevant data and other information.
Unifrax I LLC
Corporate Headquarters
600 Riverwalk Parkway, Suite 120
Tonawanda, New York 14150
Telephone: 716-768-6500
Telefax: 716-768-6400
Internet: www.unifrax.com
Email: info@unifrax.com