材料 >> 聚合物材料
聚甲醛均聚物,棒, Acetal, Homopolymer POMH, White, 25mm直径
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介绍 | 订货号 | 包装规格 | | Length (Round) | | 881-467-82 | 100 mm | | 183-479-13 | 200 mm | | 934-896-09 | 500 mm | | 862-000-06 | 1000 mm |
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参数 | Colour[颜色] | White | | Diameter[直径] | 25mm | | Length[长度] | 100 mm - 1000 mm | | Mechanical Properties(机械性能) | | Coefficient of friction | 0.20 - 0.35 | | Elongation at break ( % ) | 40.0 -75.0 | | Hardness - Rockwell | M94 | | Izod impact strength ( J m⁻¹ ) | 75.0 - - 130.0 | | Poisson's ratio | 0.350 | | Tensile modulus ( GPa ) | 2.90 - 3.10 | | Tensile strength ( MPa ) | 70.00 | | Physical Properties(物理性质) | | Density ( g cm⁻³ ) | 1.420 | | Flammability | HB | | Limiting oxygen index ( % ) | 15 | | Radiation resistance | Poor | | Resistance to Ultra-violet | Poor | | Water absorption - equilibrium ( % ) | 0.60 - 0.90 | | Water absorption - over 24 hours ( % ) | 0.250 | | Thermal Properties(热性能) | | Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 122.000 | | Heat-deflection temperature - 0.45MPa ( C ) | 170 | | Heat-deflection temperature - 1.8MPa ( C ) | 135.0 | | Specific heat ( J K⁻¹ kg⁻¹ ) | 1500.0 | | Thermal conductivity ( W m⁻¹ K⁻¹ ) | 0.22 - 0.24 @23℃ | | Upper working temperature ( C ) | 80 - 120 | | Electrical Properties(电气特性) | | Dielectric constant @1MHz | 4 | | Dielectric strength ( kV mm⁻¹ ) | 20.0 | | Dissipation factor @ 1MHz | 0.0050 | | Surface resistivity ( Ohm/sq ) | 10¹⁵ | | Volume resistivity ( Ohmcm ) | 10¹⁵ | | Chemical Resistance(耐化学性) | | Acids - concentrated | Poor | | Acids - dilute | Poor-Fair | | Alcohols | Good-Fair | | Alkalis | Poor | | Aromatic hydrocarbons | Good | | Greases and Oils | Good | | Halogenated Hydrocarbons | Good-Poor | | Halogens | Poor | | Ketones | Good-Fair |
其他参数 公差 | 直径 | ≤10mm | ±10% |
|---|
| 聚合物 | +20% / -10% | | 陶瓷 | +20% / -10% | |
| >10mm | ±5% | | 陶瓷 | +20% / -10% | | 聚合物 | +20% / -10% | |
| 长度 | <100mm | ±1mm |
|---|
| ≥100mm | +5% / -1% |
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