Smiths Metal Centres Ultra-high molecular weight PE

Identification & Functionality

Features & Benefits

Labeling Claims: Food Contact Acceptable
Materials Features: Chemical Resistant,
Dimensional Stability,
Food Contact Acceptable,
Good Impact Strength,
Good Machinability,
Good Toughness,
Good UV Resistance,
Low Moisture Absorption
Features & Benefits: Product Attributes Customer Benefits

Range of grades available.

Able to resist very high impact loads

Excellent chemical resistance

Natural product may be used in contact with foodstuffs (subject to appropriate limits)

HDPE may be hot air welded.

UHMWPE is resistant to extreme abrasion

Low density - compared with other engineering plastics

Minimal absorption of moisture

Diameter (HD-PE)

Product sourced from longstanding manufacturer with ISO accreditation

Correct grade selection for each application is optimized

Very good all-round product for diverse engineering applications

Low cost assembly.

Long wear life.

Easy handling, low inertia, saving energy

Aids dimensional stability

Huge components are possible.

Consistent quality ensures uniform machining & performance

Applications & Uses

Markets: Building & Construction,
Consumer Goods,
Electrical & Electronics,
Industrial
Applications: Building & Construction — Building Envelope & Roofing
Glazing & Window Elements
Building & Construction — Building Materials
Other Building Materials
Industrial — Chemical & Industrial Manufacturing
Equipment & Parts
Consumer Goods — Housewares
Electrical & Electronics — Parts & Components
Other Parts & Components
Plastics & Elastomers End Uses: Food Preparation Equipment,
Gaskets,
Indirect Food Contact Applications,
Profiles,
Pump Parts,
Valve Parts
Typical Applications: Ultra-high-molecular-weight PE (UHMW-PE) - For pump & valve parts, gaskets, glide profiles, parts for the food industry.
Machinability: The machining of polyethylene is uncomplicated provided the component tolerances allow for polyethylene’s relatively high co-efficient of thermal expansion and tensile elongation values.

Properties

	Value	Units	Test Method / Conditions
Density (20°C)	0.93	g/cm^³	-
Tensile Strength at Yield	17.0	MPa	-
Tensile Strength at Break	40.0	MPa	-
Elongation at Yield	min. 20	%	-
Elongation at Break	min. 50	%	-
Tensile Modulus of Elasticity	600.0	MPa	-
Flexural Strength	27.0	MPa	-
Impact Strength	No break	kJ/m^²	-
Notched Impact Strength	No break	kJ/m^²	-
Ball Indentation Hardness / Rockwell	35.0	N/mm^²	-
Hardness	51.0	Shore D	-

	Value	Units	Test Method / Conditions
Vicat Softening Point	80.0	ºC	VST/B/50
Heat Deflection Temperature	65.0	ºC	Method B
Heat Deflection Temperature	42.0	ºC	Method A
Coefficient of Thermal Expansion	2.0	10^⁻⁶ .K^⁻¹	-
Thermal Conductivity (20°C)	0.42	W/(m.K)	-
Service Temperatures without High Mech. Load - Upper Limit	90.0	ºC	-
Service Temperatures without High Mech. Load - Lower Limit	-150.0	ºC	-

	Value	Units	Test Method / Conditions
Moisture Absorption	0.001	-	ISO 62
Friction Co-efficient	0.25	-	-

	Value	Units	Test Method / Conditions
Flammability	HB	-	UL94

Regulatory & Compliance

Certifications & Compliance: FDA Compliant,
UL 94
Physiological Safety: The FDA (US Food & Drug Administration) has approved the raw materials used for both the HD-PE and UHMWPE grades to allow their use in contact with food – check for any specific limitations required by the FDA.

Technical Details & Test Data

Technical Description: Grade Modification Purpose

Ultra-high-molecular-weight PE (UHMW-PE or 1000 grade)
None. Colors natural black, green. Component identification. Black will have better UV resistance.
Chemical Resistance: HD-PE has extremely good resistance to aqueous solutions of acids, alkalis and salts. Also alcohol 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. The UHMWPE grade has even better chemical resistance; strong oxidizing agents only cause surface swelling.

Packaging & Availability

Product Availability: UHMW-PE 20mm to 200mm in natural, black and green. ≤ 2m lengths

* Sizes not stocked are available on relatively short delivery time. 1, 2 or 3m lengths supplied or cut to customer requirements.

Grade	Modification	Purpose
Ultra-high-molecular-weight PE (UHMW-PE or 1000 grade)	None. Colors natural black, green.	Component identification. Black will have better UV resistance.

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