POM
Acetal POM C has physical properties that are not available with metals or most other plastics; high mechanical strength and rigidity,low coefficients of friction,low moisture absorption, excellent dimensional stability,fatigue endurance, and resistance to abrasion and creep.These materials are also resistant to a wide range of solvents and have good electrical properties.
POM C is easily machinable and is genuinely porosity-free making it the preferred grade for food contact and medical applications.
POM C products,eg.,rod,sheet,exhibit an elevated resistance to strong alkalis,thermal-oxidative degradation and hydrolysis when compared to acetal POM H.
Technical Data
|
Properties
|
Test
Standard
|
Unit
|
Result
|
|
Density
|
ASTM
D-792
|
g/cm3
|
1.41
|
|
Long Time Working Temperature
|
---
|
℃
|
110
|
|
Water
Absorption
|
ASTM
D-570
|
%
|
0.2
|
|
Yield Tensile Strength
|
ASTM
D-638
|
MPA
|
60
|
|
Tensile Strength
|
ASTM
D-638
|
MPA
|
65
|
|
Elongation
at Break
|
ASTM-D638
|
%
|
25
|
|
Flexural
Strength
|
ASTM
D-790
|
MPA
|
80
|
|
Flexural
Modulus
|
ASTM
D-790
|
MPA
|
2650
|
|
Impact
Strength
|
ASTM
D-256
|
J/M
|
74
|
|
Hardness
|
ASTM
D-785
|
---
|
84
|
|
Melting
Point
|
DSC
|
℃
|
160
|
|
Thermal
Conductivity
|
23℃
|
w/(k-m)
|
0.31
|
|
Heat
Deflection Temperature
|
ASTM
D-648
|
℃
|
130
|
|
Linear
Expansion Coefficient
|
ASTM
D-696
|
*10-5cm/cm/℃
|
10
|
|
Volume Resistant
|
ASTM
D257
|
Ω.cm
|
1013
|
|
Surface Resistant
|
ASTM
D257
|
Ω
|
1013
|
|
Dielectric Constant
|
ASTM
D150
|
---
|
3.7
|
|
Friction Coefficient
|
ASTM
D53375
|
---
|
0.35
|
|
Anti-U.V.
|
---
|
---
|
NO
|