PROPERTIES OF PBT
Properties Unit Test Method  
Mechanical      
Tensile strength at yield N/mm² ASTM D 638 115

at break

N/mm² ASTM D 638 -
Elongation at yield % ASTM D 638 3

at break

% ASTM D 638  
Tensile modulus N/mm² ASTM D 638 8000
Flexural yield strength N/mm² ASTM D 790 -
Flexural yield strength N/mm² ASTM D 790 170
Flexural modulus N/mm² ASTM D 790 7000
Notched impact strength Charpy K/m² DIN 53453 12
Notched impact strength IZOD J/m ASTM D 256 100
Hardness.  H358/10 N/mm² DIN 53456 104

H358/60

N/mm² DIN 53456 101

 Rockwell

- ASTM D 785 L102
Thermal      
Oxygen index" % ASTM D 2863 19
Flame ratardancy"
(1/6 mm tickness)
- UL stand 94 94HB
Heat resistance: Vicat, method B °C ASTM D 2863 210-215
Thermal conductivity W/m²C ASTM C 177 0.19
Mould shrinkage flow % ASTM D 1299 0.4-0.6
Cross flow direction % ASTM D 1299 0.6-0.8
Physical      
Water absorption   ASTM D 570  
24 Hrs, 23°C %   0.06

 

CHEMICAL RESISTANCE

Chemical media

°C Immulsion %
Days
% Retention
of strength
Acids      
10% Hydrochloric 23 30 89
23 90 85
23 180 82

10% Sulfuric

23 30 97
23 90 94
23 180 90
36% Sulfuric (battery) 23 30 97
23 180 96
66 30 84
66 180 35
10% Acetic 23 30 89
23 180 88
Bases      
5% Potassium Hydroxide 23 30 83
23 90 10
10% Sodium Hydroxide 23 30 2
23 180 -
10% Ammonium Hydroxide 23 30 90
23 90 87
23 180 58
Organic Solvents      
Ethyl Alcohol 23 30 99
23 180 94
Methyl Alcohol 23 30 91
23 180 76
Isopropyl Alcohol 23 30 100
23 180 100
Isopropyl Alcohol & Water (50:50) 23 30 93
23 180 96
Turpentine 23 30 92
23 180 66
Acetone 23 30 63
23 180 90

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