2. PMMA
GEHR PMMA® (Acryl) GEHR PMMA® (Acrylic) GEHR PMMA® (acrylique)
PMMA
Polymethylmethacrylat ist spröde und Polymethylmethacrylate is brittle and Le polyméthacrylate de méthyle est
verfügt über eine hohe Härte, Steifigkeit shows a good mechanical strength, fragile et présente une dureté, une
und Festigkeit. Zudem ist PMMA kratzfest tensile strength and hardness. PMMA is rigidité et une solidité élevées. En outre,
und polierfähig. Es besitzt eine gute also scratch-resistant and easy to polish. le PMMA résiste aux rayures et peut être
Temperaturwechselfestigkeit und It shows a good temperature resistance poli. Il est doté d’une bonne résistance
UV-Beständigkeit. Die Dauergebrauchs- and UV-stability. The operating tempera- aux chocs thermiques et aux UV. La
temperatur von PMMA liegt zwischen ture of PMMA ranges from -40 °C to température d’utilisation en continu du
-40 °C und ca. +70 °C. approx. +70 °C. PMMA est comprise entre -40 °C et env.
+70 °C.
Eigenschaften: Properties:
• sehr hohe Härte und Steifigkeit • very high mechanical strength and Propriétés :
• hohe mechanische Festigkeit hardness • Dureté et rigidité très élevées
• polierfähige Oberfläche • high mechanical rigidity • Grande résistance mécanique
• hohe Transparenz • excellent transparency • Surface polissable
• hohe Wärmeformbeständigkeit • easy to polish • Grande transparence
• gute elektrische und dielektrische • good thermal stability • Résistance élevée à la déformation
Isoliereigenschaften • good insulation properties thermique
• gute Witterungsbeständigkeit • low water absorption • Bonnes propriétés électriques et
• geringe Wasseraufnahme • excellent weather resistance diélectriques
• geringe Spannungsrissbeständigkeit • possible stress problems • Grande résistance aux intempéries
• geringe chemische Beständigkeit • low chemical resistance • Faible absorption d’eau
• geringe Zähigkeit (spröde) • brittle • Faible résistance aux fissures sous
contrainte
Anwendungsbeispiele: Applications: • Faible résistance chimique
Teile im Displaybau, Lebensmittelbereich, Display, advertisement, food industry, • Faible ténacité (fragile)
Lampenrohre, Handläufe. tubes for lamps, hand rails.
Exemples d’application :
Pièces pour la construction d’écrans, le
secteur des denrées alimentaires, tubes
de lampes, mains courantes.
30
3. PMMA
Vollstäbe
®
ECOGEHR
GEHR PMMA xt®
Toleranzen Gewicht Verpackungseinheit
ø Tolerances Weight Packing Unit Round Rods
Tolérances Poids Conditionnement
mm mm kg/m Stücke . Pieces . Pièces
Joncs pleins
PVC
4 0,020 20
5 0,030 20 L: 4 - 120 mm ø : 2000 mm
6 0,040 20 150 - 200 mm ø : 1000 mm
7 0,050
8 0,070 10
Farben, Colours, Couleurs:
PP
10 0,100 10 transparent, transparent,
+ 1,0
12 0,140 1 transparent
15 0,230 1
18 0,320 1
20 0,400 1
PE
22 0,490
25 0,620 1
28 0,770
PMMA
30 0,900 1
35 + 1,3 1,170 1
40 1,530 1
50 2,330 1
60 3,590 1
PC / PPE
65 4,250
ABS
70 4,870 1
75 5,640 1
80 6,420 1
+ 1,5
90 7,700 1
100
PA
9,500 1
120 13,600 1
150 21,000 1
180 30,000
200 1
POM
37,000
GEHR PMMA xt® Vierkantstäbe
PET
Kantenlänge
Square
Toleranzen
Tolerances
Gewicht
Weight
Verpackungseinheit
Packing Unit
Square Bars
Section Tolérances Poids Conditionnement
mm mm kg/m Stücke . Pieces . Pièces
Barres carrées
10 x 10 + 0,75 0,120 1
ECTFE
PVDF
15 x 15 + 0,75 0,270 1 L: 2000 mm
20 x 20 + 1,00 0,480 1
25 x 25 + 1,00 0,750 1
Farben, Colours, Couleurs:
30 x 30 + 1,30 1,150 1
PSU/PPSU
35 x 35 + 1,50 1,560 1 transparent, transparent,
transparent
PEI
40 x 40 + 1,80 2,040 1 PPS
GEHR PMMA xt® Scharnierprofile
Abm. Gewicht VE/Stück
Dim. Weight P.U./pieces Hinge Profiles
Dim. Poids Con./pièces
Charnières profilées
PEEK
A x B mm kg/m
25 x 2,5 0,070 20
50 x 2,5 0,140 20 L: 1500 mm
ESD ELS
Farben, Colours, Couleurs:
transparent, transparent,
transparent
31
4. PMMA
Rohre GEHR PMMA xt®
Wandstärke Gewicht Verpackungseinheit
Tubes D
ø
d
Wall Thickness Weight Packing-Unit
Dxd Epaisseur Poids Conditionnement
Tubes mm mm kg/m Stücke . Pieces . Pièces
7x 5 1 0,024 10
L: 2000 mm 8x 4 2 0,048 10
10 x 8 1 0,036 10
Farben, Colours, Couleurs: 10 x 7 1,5 0,051 10
10 x 6 2 0,063 10
transparent, transparent, transparent
12 x 8 2 0,079 10
12 x 6 3 0,107 10
13 x 10 1,5 0,069 10
15 x 11 2 0,103 10
15 x 10 2,5 0,123 10
16 x 12 2 0,111 10
20 x 16 2 0,142 10
20 x 14 3 0,202 10
PMMA
25 x 21 2 0,183 5
25 x 19 3 0,261 5
30 x 26 2 0,222 5
30 x 24 3 0,321 5
30 x 22 4 0,412 5
30 x 20 5 0,495 5
38 x 32 3 0,416 1
40 x 36 2 0,301 1
40 x 34 3 0,440 1
40 x 32 4 0,571 1
40 x 30 5 0,693 1
50 x 46 2 0,381 1
50 x 44 3 0,559 1
50 x 42 4 0,729 1
50 x 40 5 0,891 1
60 x 56 2 0,459 1
60 x 54 3 0,677 1
60 x 52 4 0,887 1
60 x 50 5 1,090 1
70 x 64 3 0,796 1
70 x 62 4 1,045 1
70 x 60 5 1,287 1
80 x 74 3 0,915 1
80 x 72 4 1,205 1
80 x 70 5 1,485 1
90 x 84 3 1,035 1
90 x 82 4 1,360 1
90 x 80 5 1,680 1
100 x 94 3 1,150 1
100 x 92 4 1,520 1
100 x 90 5 1,885 1
110 x 104 3 1,270 1
110 x 100 5 2,080 1
120 x 114 3 1,390 1
120 x 110 5 2,280 1
134 x 128 3 1,556 1
134 x 124 5 2,560 1
150 x 144 3 1,672 1
150 x 142 4 2,310 1
150 x 140 5 2,870 1
180 x 172 4 2,790 1
200 x 194 3 2,342 1
200 x 192 4 3,110 1
200 x 190 5 3,810 1
250 x 244 3 2,970 1
250 x 240 5 4,860 1
300 x 290 5 5,558 1
400 x 390 5 7,442 1
32
5. Technical Data Sheet
GEHR PMMA
I. Physical Properties
Test method Unit Value
1. Specific gravity (ρ) ISO 1183 g/cm³ 1,18
2. Water absorption ISO 62 % 0,3
3. Maximum permissible service temp - - -
(no stronger mechanical stress involved)
Upper temperature limit - °C 70
Lower temperature limit - °C -
II. Mechanical Properties
Test method Unit Value
1. Tensile strength at yield ISO 527 MPa 72
2. Elongation at yield. (εS) ISO 527 % -
3. Tensile strength at break (σR) ISO 527 MPa -
4. Elongation at break (εR) ISO 527 % 4,5
5. Impact strength (an) ISO 179 kJ/m2 12
6. Notch impact strength (ak) ISO 179 kJ/m2 2
7. Ball indentation / Rockwell hardness ISO 2039-1 MPa -
8. Shore-D DIN 53505 -
9. Flexural strength (σB 3,5 %) ISO 178 MPa 105
10. Modulus of elasticity (Et) ISO 527 MPa 3300
III. Thermal Properties
Test method Unit Value
1. Vicat-softening point VST/B/50 ISO 306 °C 102
VST/A/50 ISO 306 °C -
2. Heat deflection temperature HDT/B ISO 75 °C -
HDT/A ISO 75 °C 90
3. Coefficient of linear thermal expansion α DIN 53752 K-1∗10-4 0,7
4. Thermal conductivity at 20 °C (λ) DIN 52612 W/(m∗K) 0,19
IV. Electrical Properties
Test method Unit Value
1. Volume resistivity VDE 0303 Ω∗cm ≥1015
Ω ≥10
13
2. Surface resistivity (Ro) VDE 0303
3. Dielectric constant at 1MHz (εr) DIN 53483 - 2,7
4. Dielectric loss factor at 1 MHz (tanδ) DIN 53483 - 0,02
5. Dielectric strength VDE 0303 kV/mm 30
6. Tracking resistance IEC 60112 - CTI ≥600
V. Additional Data
Test method Unit Value
1. Bond ability - - +
2. Friction coefficient DIN 53375 - -
3. Flammability UL 94 - HB
4. UV stabilisation - - +
All values are attributes of the used raw materials.
The physical data contained in this table are typical values. They are obtained on test specimens under specific conditions and
represent average values of a large number of tests. The results obtained on this tests specimens cannot be applied to finished
parts without reservations, as behaviour is influenced by processing and shaping. Reproduction only with our definite permis-
sion.
Subject to change without notice. Page 1 of 1 Date: 11/07
7. Chemical Resistance
GEHR PMMA
conc. (%) room temperature 60 °C
Methylene chloride 100 - -
Milk +
Mineral oils, aromatic free +
Nitric acid 10 + +
Nitric acid 50 - -
Nitrobenzene - -
Oxalic acid +
Ozone, gas ca. 0,5 ppm +
Paraffine oil 100 +
Perchloroethylene o
Petroleum ether 100 +
Petroleum, aromatic free 100 o
Phenol, aqu ca. 9 - -
Phosphoric acid 50 - -
Potassium hydroxide liquor 50 +
Premium Fuel - -
Propyl alcohol
Pyridine
Silicone oil +
Sodium carbonate, aqu + +
Sodium chloride, aqu +
Sodium hydroxide liquor 15 +
Sodium hydroxide liquor 60 - -
Sodium hyrogen sulphite +
Sodium nitrate, aqu
Sodium thiosulfate +
Sulphuric acid 96 - -
Tetrahydrofurane 100 - -
Toluene 100 - -
Transformer oil +
Trichloroethylene 100 - -
Vinegar, standard 5-10 + +
Water + +
Xylene - -
Symbolism for the description of the chemical resistance
+ = resistant (only small changes of the weight, dimensions and properties.
According our experiences there is no permanent damage expect).
o = partly resistant (medium changes of the properties. At longer contact time there are
permanent damages recommended e.g. degradation of the macro
molecular structure).
- = non resistant (strong and permanent degradation in short contact time e.g. stress
cracking).
= not tested (no tests were done, no recommendations are possible).
The figures indicated here are approximate values. They may be affected by the temperature, operating time, concentration and
stress level of the component involved, by mechanical loads, etc., and the user is not released therefore from the obligation of
performing checks and trials of his own. The values indicated here have been compiled on the bases of current experiences and
findings. Any legally binding guarantee of certain properties, or any suitability for a specific application cannot be inferred from
the present data.
Dok.-Nr. Name Erstelldatum/Geändert am Erstellt von Seite
PMMA_engl Chem-Best 11.12.2007 QM 2 von 2
8. REGULATORY AFFAIRS - Product Information
GEHR PMMA (Polymethylenemethylacrylat)
We confirm that the raw material, which we use for manufacturing our semi
finished products fulfils the requirements below (based on the above mentioned
batches):
GEHR PMMA, tubes
Bundesinstitut f. Risikobewertung BfR
(Germany)
European Directives 10/2011/EG
(Europe)
Food & Drug Administration FDA (CFR 21, 177.1010)
(USA)
GEHR PMMA, rods
Food & Drug Administration FDA (CFR 21, 177.1010)
(USA)
GEHR GmbH
Casterfeldstraße 172
68219 Mannheim
Tel: +49 - 621-87 89-0
Fax: +49 - 621-87 89-200
The present certificate corresponds with our actual knowledge. However customers should verify regulatory status
periodically, if needed.
Issue / Print date: 2011-06-28 / 20.02.2012 Page 1/1
9. GEHR GmbH GEHR Plastics, Inc. GEHR Plastics Hong Kong Limited
Casterfeldstr. 172 Naamans Creek Center Unit 2, 11/F,
68219 Mannheim 24 Creek Circle Fonda Industrial Building,
Boothwyn, PA 19061 37-39 Au Pui Wan Street
Fotan, Shatin
Germany USA Hong Kong
T: +49 - 621-87 89 - 0 T: +1 - 610 - 497 - 8941 T: +852 - 6977 - 33 18
F: +49 - 621-87 89 - 200 F: +1 - 610 - 497 - 8901 F: +852 - 3013 - 9544
info@gehr.de info@gehrplastics.com info@gehr.hk
www.gehr.de www.gehrplastics.com www.gehr.hk
GEHR Plastics China Office GEHR Plastics Bureau France GEHR Plastics Ufficio Italia
Room 1003, No. 7 6 Rue de la Chapelle DIPRO
New Phoenix Town Ginza 39700 Serre les Moulières Via Alessandria 55
51 Feng cheng road 10152 Torino
200093 Shanghai
China France Italy
T: +86 - 21 - 51 69 28 72 T: +33 - 7 - 86 48 38 04 T: +39 - 011-24 89 507
F: +86 - 21 - 60 91 93 03 F: +49 - 621 - 87 89 - 200 F: +39 - 011-24 85 733
info@gehr.cn info@gehr.fr info@gehr.it
www.gehr.cn www.gehr.fr www.gehr.it
3.11.11. STO
Änderungen vorbehalten. Subject to change. Sous réserve de modifications.
