Detailed Explanation of High Density Polyethylene Parameters
Material Overview9255 High Density Polyethylene (HDPE) is a high-performance thermoplastic with excellent mechanical properties, chemical stability, and processability. The density range of this material is 0.941-0.965 g/cm ³, and it is widely used in pipeline systems, packaging materials, cable sheaths, and other fields.
Physical performance parameters
Density: 0.941-0.965 g/cm ³ (ASTM D1505/ISO 1183) Melt index: 0.1-5 g/10 min (ASTM D1238) Appearance characteristics: colorless or milky white particles, smooth surface, good glossiness
Mechanical performance indicators
Tensile strength: 26-37 MPa Tensile elongation at break: 500% -700% Impact strength: excellent, especially in low-temperature environments Bending modulus: 900-1200 MPa
Thermal performance parameters
Melting temperature: 120 ℃ -130 ℃ Vicat softening point: 120 ℃ -130 ℃ Thermal stability: below 200 ℃ Stable thermal conductivity: about 0.47 W/m · K
Chemical performance characteristics
>Chemical resistance: resistant to most acids, bases, salts, and organic solvents Water absorption: extremely low (
Pipe specification parameters
According to the retrieved data, the specific specifications of 9255 high-density polyethylene pipes are as follows:
Water supply pipe specifications
nominal diameter
outer diameter
(mm)
(mm)
16
21.5 ±
20
20
27.0 ±
0.25
25
34.0 ±
0.35
30
42.0 ±
0.40
40
48.0 ±
0.50
Wall thickness
Pipe weight
(mm) (kg/m)
2.5 ± 0.20 0.143
3.0 ± 0.25 0.217
3.5 ± 0.30 0.322
4.0 ± 0.30 0.458
4.5 ± 0.35 0.590
Usage pressure (MPa) 1.0
1.0
1.0
1.0
Length (m) 5,50100 5,50100 5,50100 5,50 5,50
General pipe specifications
nominal diameter (mm) outer diameter (mm) wall thickness (mm) pipe weight (kg/m) usage pressure (MPa)
16
21.5 ± 0.20 2.4 ± 0.20 0.138
1.0
20
27.0 ± 0.25 2.4 ± 0.20 0.178
1.0
25
34.0 ± 0.35 2.6 ± 0.25 0.246
0.8
30
42.0 ± 0.40 2.8 ± 0.25 0.331
0.8
Processing performance
Flowability: Moderate, suitable for injection molding, extrusion, blow molding and other processes Processing temperature: 190 ℃ -230 ℃ Process compatibility: Can be blended with LDPE, MDPE and other materials
Environmental performance
Recyclability: Highly recyclable, compliant with ISO 14021 standard Food safety: FDA and EU food contact material certification Environmental friendliness: Burning does not produce toxic gases
Application areas
1. Pipeline systems: water supply and drainage pipelines, gas pipelines, industrial pipelines 2 Packaging materials: bottles, containers, food packaging film 3 Cable sheath: provides electrical insulation and wear resistance Daily necessities: shopping bags, garbage bags and other consumer goods
Quality standards
All products comply with relevant standards such as CNS2456 and CNS2458, with complete pipe fittings and customizable production lengths according to actual needs.
