AFM 34 IGV
Technical Data Sheet 135
Edition: 08/2015, supersedes all prior editions.
Please see the latest issue under www.reinz-industrial.com
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Material
AFM 34 IGV is an asbestos-free gasket material reinforced with a mesh of galvanized carbon steel. The composite material is physiologically safe and contains no color pigments. It consists of aramide fibers, inorganic fillers and other asbestos substitutes that are resistant to high temperatures, and are processed with high-grade elastomers under elevated pressure and temperature.

Properties
AFM 34 IGV is resistant to many media, e.g. oils, solvents, fuels, saline solutions, refrigerants, alcohols, etc. It is also suitable for sealing hot water and steam up to 200 °C in stationary applications and with an installation surface pressure of at least 50 N/mm². Please consult us if you have a specific application.

Compared with non-reinforced AFM 34, the metal reinforcement lends the gasket material particularly high tensile strength plus high stress & shear resistance, and makes it extremely easy to handle.

AFM 34 IGV withstands higher combined pressure & temperature loads far better than non-reinforced materials.

Application
  • for DIN and ANSI flanges, fittings, pumps and apparatus in chemical plants, refineries, power stations, and in shipbuilding
  • in general for sealed joints in which high mechanical and/or thermal stresses or alternating loads occur
  • for sealing components with relatively narrow lands, e.g. heat exchangers, steam fittings, air and refrigerating compressors as well as all threaded couplings

Surfaces
As standard, both sides of AFM 34 IGV are coated with a non-stick, high-friction layer that greatly facilitates disassembly. In most cases, additional surface treatment is unnecessary.
However, a graphite coating on one or both sides of the gasket is required when used with components that rotate on the gasket during assembly, e.g. in threaded couplings, radiator plugs, etc., as a low friction value is required in these cases.

Approvals
Germanischer Lloyd (DNV GL)
Approval for shipbuilding

Technical Data
(nominal thickness
2.00 mm)
Density
g/cm³ 2.00 - 2.20

Ignition loss
acc. to DIN 52 911

%

< 26

Tensile strength
across grain
N/mm² ≈ 20
with grain
N/mm² ≈ 38

Residual stress
acc. to DIN 52 913
16 h, 300 °C N/mm² ≈ 25
16 h, 175 °C N/mm² ≈ 35

Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility
% > 5
recovery
% > 60

Sealability
against nitrogen
acc. to DIN 3535, part 6 FA
mg/(s·m) ≈ 0.25

Swelling
acc. to ASTM F 146

in IRM 903 Oil
(replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness
% < 10
increase in weight
% < 10

in ASTM Fuel B
5 h, room temp.
increase in thickness
% < 10
increase in weight
% < 10

in water / antifreeze
(50:50)
5 h, 100 °C
increase in thickness
% < 5
increase in weight
% < 5

Content of water-soluble chloride
 
ppm
 
< 100
Short-term peak temperature

°C

400

Maximum continuous temperature

°C

250
for steam up to
°C 200

Maximum operating pressure

bar

170
     
Max. continuous temperature and max. pressure must not occur simultaneously, please refer to the table entitled
"Max. operating pressures at various temperatures and with various media"

 
DIN 28091-2:
Cold creep εKSW % 5 - 8

Cold recovery εKRW

%

2 - 4

Hot creep during service εWSW/T

%

6 - 9

Hot recovery εWRW/T

%

≈ 1.5

Recovery R

mm

≈ 0.030

Specific leakage rate λ

mg / (s·m)

< 0.2

Residual surface pressure


%


> 50
after 1000 h (in air at 100 °C)

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.

Form of delivery
Gaskets according to a drawing, dimensions supplied, or other arrangement.

Sheets 1500 x 1500 mm (standard size)

Nominal thicknesses and tolerances acc. to DIN 28091-1 (mm)
Dimensional l
imits within a shipment

0.80
±0.10
1.00
±0.10
1.50
±0.15
2.00
±0.20
3.00
±0.30

Max. thickness variation in a sheet:
0.1 mm for sheet thickness ≤1.00 mm, and 0.2 mm for thickness >1.00 mm

© VICTOR REINZ 2020