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Polystyrene (HIPS) | UNFILLED | FLAME RETARDANT | ||||
PS High Impact | PS High Impact V2 | PS High Impact V0 | PS High Impact V0 | |||
Physical properties | Method | Unit | without brominated | |||
density | ASTM D1505 | g/cm | 1,04 | 1,09 | 1,17 | 1,15 |
mould shrinkage | ASTM D955 | % | 0,4-0,6 | 0,4-0,6 | 0,4-0,6 | 0,4-0,6 |
water absorption (24 h/23°C) | ASTM D570 | % | 0,06 | 0,06 | 0,06 | 0,06 |
MFI melt flow index | ASTM D1238 | g/10' | 15 | 15 | 15 | 12 |
Mechanical properties | ||||||
tensile strenght at yield | ASTM D638 | MPa | 25 | 40 | 30 | 22 |
elongation at break | ASTM D638 | % | 20 | 25 | 20 | 20 |
flexural modulus | ASTM D790 | MPa | 2200 | 2400 | 2300 | 1800 |
IZOD impact strength ,notched 23°C | ASTM D256 | J/m | 90 | 80 | 80 | 80 |
IZOD impact strength, notched 0°C | ASTM D256 | J/m | - | - | - | - |
IZOD impact strenght notched -30°C | ASTM D256 | J/m | - | - | - | - |
Thermal properties | ||||||
VICAT method B (50 °C/h - 50 N) | ASTM D1525 | °C | 86 | 85 | 85 | 80 |
H.D.T. method A (1.82 MPa) | ASTM D648 | °C | - | 77 | 77 | - |
ball pressure test | IEC 335 | °C | - | 75 | 75 | - |
Flammability properties | ||||||
limited oxigen index | ASTM D2863 | % | - | 21 | 23 | - |
flame rating 0.8 mm | UL 94 | Class | - | - | - | - |
flame rating 1.6 mm | UL 94 | Class | HB | V2 | V2 | V0 |
flame rating 3.2 mm | UL 94 | Class | HB | V2 | V0 | V0/5VA |
needle flame test | IEC 695-2-2 | - | - | OK | OK | OK |
GWFI glow wire flammability index | IEC 695-2-1 | °C | - | 960 | 960 | 960 |
CTI comparative tracking index | IEC 112 | Volt | - | 500 | 250 | - |