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Technical Data Sheet 105 (previously TDS 123)
Edition: 07/2021, supersedes all prior editions.
Please see the latest issue at www.reinz-industrial.com |
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Material
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AFM 5 is an asbestos-free gasket material. The core consists
of a tanged sheet of galvanized steel and a steel wire mesh
on both sides. A soft mass composed of inorganic fillers and high-grade
elastomers is pressed into this metal laminate.
AFM 7 differs from AFM 5 in that stainless steel is used for its core. Due to the
higher temperature resistance of the tanged stainless steel sheet, AFM 7 can be
subjected to higher thermal stress than AFM 5.
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Properties
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Both materials are highly resistant to mechanical and thermal stress. Due to their low
relaxation rates, gaskets made of AFM 5 or AFM 7 do not usually need to be retorqued.
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Application
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For sealed joints under high mechanical and thermal stress, for example in
turbochargers and exhaust systems. When combined with a stainless steel inner
eyelet or casing, the resistance to temperature (no direct contact of the hot
exhaust fumes with the material core) and gas sealability (no
transverse diffusion) can be increased even more.
The special material
properties also permit the material to be used for cylinder head gaskets
in certain applications.
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Surfaces
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For special applications, individual coatings applied over the full or partial surface are available.
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Technical Data
(nominal thickness
1.50 mm)
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Weight per surface unit |
kg/m² |
≈ 6.9 |
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Residual stress acc. to DIN 52 913 |
16 h, 300°C |
N/mm² |
> 38
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Compressibility and recovery
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acc. to ASTM F 36, procedure J |
compressibility |
% |
3 - 10 |
recovery |
% |
> 45 |
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Swelling acc. to ASTM F 146 |
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in IRM 903 Oil (replaces ASTM Oil No. 3) |
5 h, 150°C |
increase in thickness |
% |
< 10 |
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in water / antifreeze (50:50) |
5 h, 100°C |
increase in thickness |
% |
< 4
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Maximum operating temperature |
AFM 5 |
°C |
600 |
AFM 7 |
°C |
750 |
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Surface pressure |
maximum at 300°C |
N/mm² |
100 |
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The data quoted above are valid for the material "as delivered" without
any additional treatment. In view of the countless possible
installation and operating conditions, definitive conclusions cannot be
drawn for all applications regarding the behaviour in a sealed joint.
Therefore, we do not give any warranty for technical data, as they do
not represent assured characteristics. If you have any doubt, please
contact us and specify the exact operating conditions.
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Form of delivery
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Gaskets |
according to a drawing. dimensions given. or other arrangement.
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Rolls |
500 mm wide. length 100 m
Other forms of delivery by arrangement |
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Nominal thicknesses and tolerances (mm)
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AFM 5: |
1.20
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+0.10 / -0.02
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1.30
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+0.08 / -0.04
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1.50
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+0.07 / -0.08
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1.80
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+0.07 / -0.08
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AFM 7:
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1.30
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±0.10
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1.50
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±0.10
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