Polyformaldehyde(POM) rod
Product Information
Product name: (POM) Polyformaldehyde Rod
Size:Diameter 6-130 mm, length 1000mm,2000mmm
Diameter 140-250 mm, length 1000mm
Colour: Black, White
Performance parameter table of formaldehyde rods
| Characteristic | Project | Company | Test method ISO | Precision-POM |
Mechanical performance | tensile strength | Mpa | 527 | 57 |
| bending strength | Mpa | 178 | 76 | |
| bending tensile stress | Mpa | 527 | 68/- | |
| fracture tensile strain | % | 527 | 35 | |
| tensile modulus of elasticity | Mpa | 527 | 3100 | |
| Compressive stress at 1%/2% normal strain | Mpa | 604 | 19/35 | |
| Pendulum notch impact test | kj/㎡ | 179/1eU | 7 | |
| rockwell hardness | Jan-39 | M78 | ||
| Physical property | density | g/cm³ | 1183 | 1.41 |
| water absorption rate (soaking in water at 23 ℃ for 24 hours) | % | 62 | 0.24 | |
| linear coefficient of thermal expansion (average value between 23-100 ℃) | m/(m.k) | 110*10‾⁵ | ||
| flammability (UL94) | 4589 | HB | ||
| Heat resistance performance | melting point | ℃ | 165 | |
| temperature resistance (continuous) | ℃ | 105 | ||
| temperature resistance (short-term) | ℃ | 140 | ||
| Insulation performance | electrical strength | kv/mm | 60243 | 20 |
| volume resistance | Ωχcm | 10¹⁴ | ||
| surface resistance | Ω | 60093 | 10¹³ | |
| relative dielectric constant -100HZ/1MHZ | 60250 | 3.8/3.8 | ||
| acid resistance | ||||
| Chemical properties | alkali resistance | + | ||
| carbonated water resistance | + | |||
| resistance to aromatic compounds | + | |||
| ketone resistance | + | |||
| Other | adhesion | + | ||
| friction coefficient | 0.32 | |||
| food contact | + |
Note:
1. The data listed are reference values and may vary depending on the processing method and sample. These
data cannot be simply applied to finished products. The suitability of materials for specific purposes should be
inspected by the manufacturer and the user.
2. These technical parameters are only used as assistance during planning. They particularly do not represent
promises of performance.
3. “+” is tolerable, “-” is not tolerable, and “0” depends on the situation.
Main characteristics of formaldehyde rods
(1). High mechanical strength, high rigidity and high hardness.
(2).Good sliding property and wear resistance.
(3).Good creep resistance and excellent dimensional stability.
(4).Physiological inertness, suitable for contact with food.
(5).Low impact strength, poor acid resistance and weather resistance.
(6).Machinable by machine tools and weldable.
(7). Can be used within the temperature range of -50 to 105 ℃.
Product application fields
It is widely used in the manufacturing of sliding and rotating machinery, such as small modulus gears, cams,
bearings, bushings, valve seats,shafts, impellers, blades, etc. The application industries cover automotive,
electronic and electrical, medical, mechanical and other fields.
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