Grade

Diameter Tolerance

Roundness Tolerance

Diameter Tolerance

Roundness Tolerance.

Unit

Inch

Inch

mm

mm

0

+-/0.0005

0.0005

+-/0.0127

0.0063

1

+-/0.001

0.0005

+-/0.0254

0.0127

2

+-/0.002

0.001

+-/0.050

0.025

3

+-/0.005

0.005

+-/0.127

0.127

4

+-/0.015

N/A

+-/0.381

N/A

LTEM

POM

PA66

PP

Delrin AF

Materal

Polyacetal

Nylon 66

Polypropylene

20% Teflon+80% Deinn

Density(g/cc)

1.42

1.14

0.91

1.50

Hardness(Rockwell R scale)

120

110

90

115

Wear resistant(kgf/cm2)

0.37

0.18

385-560

0.19

Wear Absorption (%)

0.22-0.25

8.4

0.03

0.2

Heat Resistance (C)

160-170

180-230

120

340

Resistance to weak acid

O

△

O

O

Resistance to strongacid

X

X

△

X

Resistance toweak

alkali

O

O

O

O

Resistance to strong alkali

O

O

O

O

Resistance to organic solution

O

O

O

O

Feature

High strength and

stiffness,enhanced

dimensional stability.

and is easy to

machine.

Excellent wear

resistance, good

tensile strength:

high durability.

Light weight. good

dielectric: good

tensile strength

Colors easily:

Matte surface finish.

Good wear/heat

resistance.

good corrosion resistance.

Dark brown color.