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Standard Specifications :

ASTM Standards

A. Specifications – Primary Forms

Sr.No.

Title

No.

1

PTFE Resin

D – 1457
D – 4894

2

Filled PTFE Compounds

D – 4745

B. Test Procedure – Primary Forms

1

Apparent Density

D – 1895

2

Bulk Factor

D – 1895

3

Pourability

D – 1895

4

Filler Content

E – 1131

5

Particle Size

D – 4894

6

Shrinkage

D – 4894

7

Flow Index (Powder Flow)

D – 1855 (M)

8

Colour / Appearance

D – 6290

9

Water Content

D – 6980

C. Specifications – Semi Finished Parts – Secondary Forms

1

PTFE – Molded Basic Shapes

D – 3294

2

PTFE – Rod- Molded

D – 1710

3

PTFE – Bush- Molded

D – 1710

4

PTFE – Rod- Ram Extruded

D – 3295

5

PTFE – Tube- Ram Extruded

D – 3295

6

PTFE – Molded Sheet

D – 3294

7

PTFE – Skived Sheet

D – 3308

8

PTFE – Tube – Paste Extruded

D – 1710

D. Test Procedure – Semi Finished Parts/ Secondary Forms

1

Density

D – 792

2

Tensile Strength

D – 638

3

Elongation

D – 638

4

Compressive strength

D – 695

5

Deformation Under Load

D – 621

6

Flexural Strength

D – 790

7

Impact Strength

D – 236

8

Hardness Shore D

D – 2240

9

Coefficient of Friction

D – 1894

10

Water Absorption

D – 570

11

Heat Resistance

D – 648

12

Continuous Service Temperature

D – 648

13

Thermal Conductivity

D – 696

14

Linear Thermal Expansion

D – 696

15

Die-electric Strength

D – 149

16

Volume Resistivity

D – 257

17

Surface Resistivity

D – 258

British Standards

1

Specification of PTFE Materials (Primary Forms)

BS ISO 12086

2

Test Procedures of PTFE Resin (Primary Forms)

BS ISO 12086

3

Specification of PTFE Parts (Secondary Forms)

BS EN ISO 13000

4

Test Procedures of PTFE Parts (Secondary Forms)

BS EN ISO 13000