Material Specifications

Expansion profiles are manufactured of high-quality materials. They conform to current provisions and requirements.
Below are presented the properties of the individual materials and their chemical resistance.

Nitriflex® material according to standard DIN 18541.
The Nitriflex® base material conforms to standard DIN 18541. It is a combination of specially selected components that are equipped with additional reserve material exceeding standard requirements. Manufactured according to DIN 18541, with adherence to the strictest standards. Manufacture is supervised by the Material Testing Office (MPA) in Dortmund, Germany.


Nitriflex® material according to in-house standard.
The material, from which expansion profile inlays are manufactured, is a combination of specially selected PVC and rubber components.
This material has proven its worth over the course of numerous years of use to seal expansion slits with elevated requirements.
Nitriflex bands exhibit the greatest elongation at extension, the best resistance to chemicals, ageing and the best rubber flexibility.
The thermal joining of these bands is hassle-free, because this material has very good thermal conductivity. For this reason, heaters with a power rating over 300 W should not be used for joining these bands.


Besaflex® (W-PCW)
For requirements as for Besaflex®.

Besaflex®
Besaflex expansion profile inlays, made of elastic PVC, are characterised by numerous good properties and provide savings during later use. Flexible soft PVC is in use since the 1930s, and its properties are constantly explored. Before it was used as inlays in expansion profiles, appropriate research has confirmed its properties, in particular resistance to ageing.
Besaflex expansion profile inlays conform to all standard requirements, because of which they find broad use in the construction industry.
They are resistant to influence by acid and alkali solutions, putrefaction and all other naturally occurring factors.


Profiles are also manufactured of other materials, i. e.
* PMMA (polymethyl methacrylate),
* PS (polystyrene),
* ABS (acryl-nitrile-butadiene rubber),
* PP (polypropylene),
* PE (polyethylene).

Material
Nitriflex®  to standard DIN 18541 Test method according to
Shore hardness (A) 67 +/– 5
ISO 868
Density 1,25 +/– 0,02 g/cm³
ISO R 1183
Tensile strength ≥ 10 N/mm²
ISO R 527-2
Relative elongation at break ≥ 350 %
ISO R 527-2
Relative elongation at break at 23 °C ≥ 350 %
DIN 53504
Yield strength ≥ 14 N/mm²
DIN 53504
Measurement divergence +/– 0,7 %
DIN 16941
Linear expansion coefficient 15–17 x 10-5  K-1
DIN 53752
Fire resistance B 2
Material does not contain lead, cadmium or formaldehydes. The material is suitable for open air spaces. Resistant to oils, bitumen mass, oxidation, acids, alkali materials, micro-organisms and UV light. Resistant to ageing, permanently elastic.

Material
Besaflex ®(PCW)
Test method according to
Shore hardness (A) 70 +/– 5
ISO 868
Density 41 +/– 0,03 g/cm³
ISO R 1183
Tensile strength ≥ 10 N/mm²
ISO R 527-2
Relative elongation at break ≥ 250 %
ISO R 527-2
Relative elongation at break at 23 °C ≥ 250 %
DIN 53504
Yield strength ≥ 10 N/mm²
DIN 53504
Measurement divergence +/– 0,7 %
DIN 16941
Linear expansion coefficient 15–17 x 10-5  K-1
DIN 53752
Fire resistance B 2

Material does not contain lead, cadmium or formaldehydes. The material is suitable for open air spaces. Resistant to oxidation, acids, alkali materials. Resistant to ageing.

Material
Thermoplastic elastomer Test method according to
Shore hardness (A) 72 +/– 5

Density 1,11 +/– 0,03 g/cm³

Tensile strength 5,0 MPa
ISO 37
Elongation at break 470 %
ISO 37
Yield strength 27 N/mm
ISO 34 metod C
Measurement divergence +/– 0,7 %
DIN 16941
Linear expansion coefficient
15–17 x 10-5  K-1 DIN 53752
Bending suitability > –60 °C
BS 2782-1
Deformation upon compression 23 %
ISO 815 type B
Resistance to ozone and UV light no cracks or rifts ISO 1431/1
Fire resistance B 2

Material does not contain lead, cadmium or formaldehydes. Suitable for open air spaces.

Material
Besaflex®(HPVC) Polypropylene (PP) Test method according to
Density 1,52 g/cm³ 1,04 g/cm³
DIN 53479
Material softening temperature 80 °C

DIN 53460/B
Elasticity modulus 3200 N/mm²

DIN 534457
Tensile strentgh 65 N/mm² 24 N/mm² DIN 53455
Ball hardness
120 N/mm²
DIN 53446
Water absorptiveness 0,04 %

DIN 53495
Bending resistance 92 N/mm²

DIN 53452
Compensation 65 %
130 %
DIN 53455
Charpy impact resistance at 23 °C 5,5 KJ/m²
18 KJ/m²
DIN 53453
Linear tolerance +/– 0,7 %

DIN 16941
Linear expansion coefficient 8 x  10-5 K-1 

DIN 53752
Fire resistance B2
B1

Material does not contain lead, cadmium or formaldehydes. Suitable for open air spaces.   

Material
Rubber (NR/SBR) Test method per
Raw density 180–200 g/cm²
ASTM
Hardness level RE 42/43
ASTM
Water absorptiveness 3–5 %
ASTM D 1056
Deformation on compression 25 %
-
Extension resistance 10,2 kp/cm²
-
Temperature resistance –20 / +80 °C
-
Abrasion resistance good -
Flammability easily flammable -
Fire resistance B 3

Material

Aluminium per PN-EN 755

Test method according to
Yield limit Rp 0,2
min. 160 N/mm²

Tensile strength  Rm min. 215 N/mm²

Elongation A5
min. 12 %

Hardness
Estimated value approx. 10
Webster B
Estimated value approx. 60
Vickers
Thermal conductivity at 20 °C 190 W/m, °C

Density 2,7 kg/dm³

Linear expansion coefficient 23 x 10-6 1/°C

Lengthwise elasticity modulus (Young's modulus) 70000 N/m²

Crosswise spring modulus (Kirchhoff's modulus) 27000 N/mm²

Poisson's ratio 0,33
Fire resistance A1
Corrosive agent concentration (%) Temperature (°C) Besaflex® (W-PCW)
Besaflex® (S-PCW)
Nitriflex®
evaluation
combustion fumes containing carbon dioxide any 60
b
b
combustion fumes containing hydrochloric acid any 60
b
b
water sewage
20
b
b
formic acid 10
20
not tested b
liquid ammonia 15
saturated
40
40
b
b
b
b
acetone any 20
u
bb
acetylene 100
20
bb
bb
acetylene chlorohydrin solution
20
u
u
acetylene tetrabromide 100
20
u
u
ethyl acetate 100
20
u
u
ethyl ether 100
20
u
u
ethyl alcohol 10
90
20
20
b
u
b
u
ethylene glycol 100
40
60
bb
u
b
u
various kinds of alums any 40
b
b
aluminium salts any 40
b
b
ammonia, water solution 15
saturated 
40
40
b
b
b
b
ammonium salts, water solution any 60
b
b
aniline 100
20
u
u
petrol 100
20
u
b
benzene 100
20
u
bb
acid sulphate, water solution any 40
60
b
bb
b
b
lead acetate, water solution

b
b
Javel water (bleach) 15
20
bb
b
butyl acetate 100
20
u
u
borax (sodium borate)

not tested
borax, solution any 40
b
b
boric acid any 60
b
b
bromine (gaseous and liquid)
20
u
u
hydrobromic acid any 40
b
b
buttermilk
20
not tested b
buna (latex)
20
b
b
butadiene 100
20
u
u
butanol 100 20
u
u
calcium chloride, water solution dowolne 60
b
b
calcium sulphide, water solution
20
not tested not tested
calcium nitrate
20 not tested not tested
Corrosive agent concentration (%) Temperature (°C) Besaflex® (W-PCW)
Besaflex® (S-PCW)
Nitriflex®
evaluation
phenol
20
not tested not tested
chlorine any 20
u
u
chlorine water
20
not tested b
chloromethyl 100
20
u
not tested
potassium-chromium alum, water solution any 40 b
b
chromic acid 0,2–10
20
b
b
diesel fuel, hydraulic oil 100
100
40
60
bb
u
b
dextrin, water solution saturated 60
b
b
fertiliser salts, water solution any 40
b
b
ferric chloride any 20
u
u
acetic acid, water solution
6
20
40
60
b
bb
bb
b
b
bb
acetic acid (vinegar)
20
40
bb
bb
b
b
anhydrous acetic acid 100
20
u
not tested
acetic ester 100 20 u
not tested
cyanoferrate any 60
b
b
fats, water suspension
20
bb
b
plant-based and animal-based fats 100 20
u
b
fixative bath
40
b
b
formaldehyde, water solution 30
20
bb
bb
formalin
20
not tested not tested
freon-12 100
20
bb
bb
tannic acid

not tested not tested
glycerine

not tested not tested
glycol

b
b
glucose saturated 20
b
b
urea any 60
b
b
fuel oil

not tested b
liquid fertiliser

b
b
potassium hydroxide 6
15
30
concentrated
concentrated
40
60
20
20
40
b
bb
bb
bb
u
b
bb
b
bb
bb
potassium dichromate, water solution saturated 20 b
b
potassium persulphate, water solution saturated 40
b
b
Corrosive agent concentration (%) Temperature (°C) Besaflex® (W-PCW)
Besaflex® (S-PCW)
Nitriflex®
evaluation
potassium salts any 60
b
b
carbolineum
20
u
not tested
sodium chloride, water solution allowed 60
b
b
carbonic acid allowed 40
u
b
hydrocarbons saturated 20
u
b
copper sulphate, water solution allowed 60
b
b
linseed oil 100
60
not testedu
not tested
magnesium salts, water solution allowed 60
b
b
methanol 100
20
u
not tested
methylene chloride 100
20
u
not tested
lactic acid
20
not tested not tested
naphthalene bromide 100
20
not tested b
b
sodium salts, see: sodium chloride
sodium hydroxide, water solution
20
not tested not tested
nickel salts, water solution  any
b
b
nitroglycerin 100
20
u
not tested
nitro varnish fixed 20
u
b
oil, see: fats, diesel fuel, etc.
oleum
10
20
u
not tested
oxalic acid

not tested not tested
ozone
20
bb
bb
paraffin

not tested not tested
Pe-Ce fabric fixed 20
u
not tested
fenole, water solution any 20
u
bb
phosphorus pentoxide 100
20
b
b
phosphoric acid , water solution any 60
b
b
ramasite

20
b
b
ricin oil

not tested not tested
nitric acid
6

3
15
65
20
40
60
20
20
20
40
b
b
b
bb
bb
bb
u
b
not tested
not tested
b
b
not tested
not tested
Corrosive agent concentration (%) Temperature (°C) Besaflex® (W-PCW)
Besaflex® (S-PCW)
Nitriflex®
ocena
hydrochloric acid any 60
b
b
salty water
40
not tested b
liquid lubricant, spindle oil, etc. 100
40
bb
bb
sulphur dioxide, gaseous any 40
bb
not tested
carbon disulphide 100
20
u
not tested
sulphuric acid 10
60
20
40
bb
bb
bb
bb
sulphur oxide in gaseous state 100
20
u
not tested
soap solution saturated 20
b
b
silver nitrate 10
60
b
b
Stauffer's lubricant 100
40
bb
b
carbon tetrachloride 100
20
u
b
tar

not tested b
ink
30
b
b
toluene 100
20
u
bb
transformer oil 100
40
60
bb
u
bb
u
trichloroethylene 100
20
u
not tested
perchloric acid any 20
bb
b
urine
20
b
b
CO2-saturated water 100
20
u
b
rain water

b
b
condensed water

b
b
water (calcium-depleted)

b
b
soft water

b
b
water (high gypsum content)

b
b
lake water

b
b
river water

b
b
glacier water

b
b
sea water

b
b
liquid glass

b
b
red and white wine

b
b
hydrogen peroxide up to 30 40
b
b
xylene

not tested not tested
zinc salts any 60
b
b
sacharose

not tested b
citric acid

not tested bb

 

Abbreviations: b =resistant, bb =  partially resistant, u =not resistant