Property

Requirement

Test method

Longitudinal charge

±10%

ASTM D 2671

Tensile strength

≥10.4 MPa

ASTM D 2671

Ultimate Elongation

≥200%

ASTM D 2671

Heat shock 250C/4h

No cracking, dripping, or flowing of outer wall

ASTM D 2671

Heating Aging, 175C/168h（7.3 Mpa）（≥100%）

No cracking, dripping, or flowing of outer wall

ASTM D 2671

Water Absorption

≤1%

ASTM D 2671

Dielectric Strength

≥19.7 KV/mm

ASTM D 2671

Volume resistivity

≥1*10^12 Ω•cm

ASTM D 2671

Flammability

Self-extinguishing ≤10s,ISO 6722

ASTM D 2671

Size

Inner diameter

Wall thickness

IDe（min） Expanded as supplied

IDr（max） Recovered after heating

Tw(nom)

Recovered after heating

Ta(nom)

Recovered after heating

Φ3.2/1

 3.2

1.0

1.00

0.40

Φ5.7/1.3

5.7

1.3

1.55

0.75

Φ7.4/1.7

7.4

1.7

1.70

0.77

Φ10.8/2.4

10.8

2.4

2.40

1.02

Φ18.3/4.4

18.3

4.4

2.60

1.28