Engineering Plastic Polypropylene (PP-H)

Polypropylene (PP-H) Technical Datasheet Strong, Chemically Resistant Engineering Plastics Service. Quality. Value. Typical Applications Product Attributes Customer Benefits PP-H: - for pump and valve parts, gaskets, support stands for coating machines and spacers used in plating plant. PP-ELS: - for applications that require high electrical conductivity. Range of grades available Correct grade selection for application is optimised Good tensile strength and high surface hardness PP-30GF: - for applications that require higher resistance to deformation – particularly at high temperature – and dimensional stability.

Excellent chemical resistance Very good all-round product for diverse engineering applications PP-30PET-F: - for brushes and barrels, pump & valve parts that require higher tensile strength but without loss of impact strength. Good sound deadening properties. Resists stress cracking. Natural product may be used in contact with foodstuffs Product Description PP-H may be hot air welded Low cost assembly High-quality general purpose engineering plastic material; the chemical name is polypropylene homopolymer, and it’s available in a range of grades and forms to suit many applications. Low density – compared with other engineering plastics.

Easy handling, low inertia, energy saving Technical Description Minimal absorption of moisture. Aids dimensional stability Smiths’ range of extruded Polypropylene includes the following grade options – Diameter (PP-H) Huge components are possible Product sourced from long- standing manufacturer with ISO accreditation Consistent quality ensures uniform characteristics in machining & performance Product Availability * Extruded round bar PP-H 10mm to 500mm dia in natural (600mm to 700mm dia in light grey PP-C and 30mm to 60mm in black PP-H) PP-ELS 20mm to 100mm in black. PP-30GF 20mm to 150mm in black. PP-30PET-F 25mm to 100mm in light grey. All in lengths ≤2m.

Hollow round bar in From 30mm o/d x 15mm i/d to PP-H (light grey colour) 200mm o/d x 120mm i/d in 2m lengths. Other products in Square &hexagon bars. -PP-H, light grey Rectangular & square hollow colour. tubes, angles, channels and welding rod. Also handles & hinges for tank fabrication. 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. 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 oxidising agents such as nitric or chromic acids, and halogens. * Sizes not stocked are available on relatively short delivery time. 1, 2 or 3m lengths supplied or cut to customer requirements. 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.

sales@smithmetal.com www.smithmetal.com Grade PP-H Modification None. Colours, natural, light grey. Some sizes available in black. Purpose Component Identification Black will have better UV resistance PP-ELS PP-30GF With addition of carbon. Black colour. Electrically conductive. Black also has better UV resistance. With 30% glass glass fibre. Increased stiffness and dimensional stability. PP-30PET-F With 30% PET fibre. Light grey colour. Increased tensile strength with no loss of impact strength.

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Polypropylene (PP-H) Strong, Chemically Resistant Engineering Plastics Service. Quality. Value. PP-H PP-ELS PP-30GF PP- 30PET-F Technical Assistance Our knowledgeable staff backed up by our resident team of qualified metallurgists and engineers, will be pleased to assist further on any technical topic. UK Service Centres: Quality & Testing:

Smiths Belfast 02895 908 897 Smiths Leeds 0113 307 5167 Smiths Biggleswade Smiths Birmingham 01767 604 704 0121 728 4940 Smiths Manchester Smiths Norwich 0161 794 8650 01603 789 878 Smiths Bristol Smiths Chelmsford 0117 971 2800 01245 466 664 Smiths Redruth Smiths Nottingham 0115 925 4801 01209 315 512 Smiths Gateshead Smiths Horsham 0191 469 5428 01403 261 981 Smiths Verwood Main Office www. smithmetal .com info@ smithmetal .com 0845 527 3331 01202 824 347 All information in our data sheet is based on approximate testing and is stated to the best of our knowledge and belief.

It is presented apart from contractual obligations and does not constitute any guarantee of properties or of processing or application possibilities in individual cases. Our warranties and liabilities are stated exclusively in our terms of trading.

© Smiths Metal Centres 202 3 Mechanical Properties Density at 20ºC Tensile strength @ yield @ break Elongation @ yield @ break Tensile modulus of elasticity Flexural strength Impact strength Notched impact strength Ball indentation hardness / Rockwell Hardness (Shore D) 0.91 30 - 10 ≥50 1200 - No break 50 67 70 0.95 38 - 4 No break 2200 - No break No break - 80 1.14 - 85 - 3 6500 120 22 6 110 - 1.00 31 27 19 24 1900 - - 51 - - g/cm3 MPa MPa % % MPa MPa kJ/m2 kJ/m2 N/mm2 - Electrical Properties Volume resistivity Surface resistivity Dielectric constant @ 1 MHz Dielectric loss factor @ 1 MHz Dielectric strength Tracking resistance – IEC 60112 ≥1016 - 2.3 0.0002 - - ≤106 ≤106 - - - - ≤1014 ≤1013 2.6 - 40 KB ≥600 - - - - - - Ohm cm Ohm - - Kv/mm V Thermal Properties Vicat softening point -VST/B/50 -VST/A/50 Heat deflection temperature -HDT/B -HDT/A Coefficient thermal expansion Thermal conductivity at 20ºC Service temperatures - upper limit without high mech.

load - lower limit 91 - 96 - - - 100 5 - - - - - - 100 5 130 160 155 140 0.7 0.27 100 5 116 - - 72 - - 100 - ºC ºC ºC ºC 10-4 .K-1 W/(m - K) ºC ºC Other Physical Properties Moisture absorption % Suitability for bonding Physiological indifference according to FDA or EEC 90/128 - natural colour Friction coefficient Flammability according to UL94 UV stability without additives 0.01 + + HB 0 0.1 + - - HB 0 - + - - HB 0 - + - - HB 0 ISO 62 - - DIN 53375 UL94

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