Smiths Metal Centres Polypropylene PP-H
- Chemical Family
- PolyolefinsPolypropylenes (PP)
Smiths Metal Centers Polypropylene PP-H is a high-quality general purpose engineering plastic material. Its chemical name is polypropylene homopolymer, and it’s available in a range of grades and forms to suit many applications.
Properties
- Physical Form
- Bars, Rods, Sheets
- Bars
- Rods
- Sheets
- Physiological Safety
The FDA (US Food & Drug Administration) has approved the raw materials used for the PP-H grade to allow its use in contact with food – check for any specific limitations required by the FDA.
Product families
- Equipment & Parts
Other characteristics
- Density
- 910.0 - 910.0 kg/m³
- Features
Chemical Resistant, Excellent Surface Hardness, Food Contact Acceptable, General Purpose, Good Machinability, High Tensile Strength, Low Moisture Absorption, Low Residual Stress
- Polymer Name
- Polypropylene Homopolymer (HPP)
- Tensile Modulus
- 1200.0 - 1200.0 MPa
- Markets
- Industrial
- Flame Rating
- UL 94 HB
- Technology
- Plastics
- Machinability
The machining of polypropylene is uncomplicated, provided the component tolerances allow for polypropylene's relatively high co-efficient of thermal expansion and tensile elongation values. Full machining instructions can be supplied on request.
- Labeling Claims
- Food Contact Acceptable
- Product Families
- Plastics — Parts, Shapes & Films
- Material Features
- Chemical Resistant
- Excellent Surface Hardness
- Food Contact Acceptable
- General Purpose
- Good Machinability
- High Tensile Strength
- Low Moisture Absorption
- Low Residual Stress
- Chemical Resistance
PP-H has extremely good resistance to acids, alkalis and alcohol, salts in aqueous solutions and many solvents. Slight swelling may be caused by permanent contact with grease, oil and wax, but generally not enough to limit the use of the material. Aromatics and halogenated hydrocarbons will cause a reduction in useful working life. The material has no resistance to strong oxidizing agents such as nitric or chromic acids, and halogens.
- Benefits and Features
Range of grades available; Good tensile strength and high surface hardness; Excellent chemical resistance; Resists stress cracking.; Natural product may be used in contact with foodstuffs; PP-H may be hot air welded; Low density – compared with other engineering plastics.; Minimal absorption of moisture.; Diameter (PP-H); Product sourced from longstanding manufacturer with ISO accreditation; Correct grade selection for application is optimized; Very good all-round product for diverse engineering applications; Low cost assembly; Easy handling, low inertia, energy saving; Aids dimensional stability; Huge components are possible; Consistent quality ensures uniform characteristics in machining & performance
- Availability
* Sizes not stocked are available on relatively short delivery time. 1, 2 or 3m lengths supplied or cut to customer requirements.
- Typical Applications
PP-H - For pump and valve parts, gaskets, support stands for coating machines and spacers used in plating plant.
- Certifications and Compliance
- FDA Compliant
- UL 94
- Plastics and Elastomers End Uses
- Gaskets
- Pump Parts
- Valve Parts
Technical data
Table 1 of 5
9 rows| Characteristic | Value | Unit |
|---|---|---|
| Density (20°C) | 0.91 | g/cm^³ |
| Tensile Strength at Yield | 30.0 | MPa |
| Elongation at Yield | 10.0 | % |
| Elongation at Break | min. 50 | % |
| Tensile Modulus of Elasticity | 1200.0 | MPa |
| Impact Strength | No break | kJ/m^² |
| Notched Impact Strength | 50.0 | kJ/m^² |
| Ball Indentation Hardness / Rockwell | 67.0 | N/mm^² |
| Hardness | 70.0 | Shore D |
Table 2 of 5
4 rows| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Vicat Softening Point | 91.0 | ºC | VST/B/50 |
| Heat Deflection Temperature | 96.0 | ºC | Method B |
| Service Temperatures without High Mech. Load - Upper Limit | 100.0 | ºC | — |
| Service Temperatures without High Mech. Load - Lower Limit | 5.0 | ºC | — |
Table 3 of 5
1 row| Characteristic | Value | Unit | Method |
|---|---|---|---|
| Moisture Absorption | 0.01 | % | ISO 62 |
Table 4 of 5
3 rows| Characteristic | Value | Unit |
|---|---|---|
| Volume Resistivity | min. 10^¹⁶ | ohm-cm |
| Dielectric Constant (1 MHz) | 2.3 | — |
| Dielectric Loss Factor (1 MHz) | 0.0002 | — |
Table 5 of 5
1 row| Characteristic | Value | Method |
|---|---|---|
| Flammability | HB | UL94 |
