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HIGH MOLECULAR WEIGHT POLYETHYLENE (HMWPE)
We fabricate using High Molecular Weight Polyethylene (HMWPE). Our product
* Is light weight
* Is virtually indestructible
* Is maintenance free
* Will not rot, rust, corrode or get osmosis
* Is easily cleaned
* Is food and fuel grade approved
* Is UV resistant
* Is Environmentally friendly
* ERMA and MSA approved
Main Characteristics:
* Good wear resistance
* Good abrasion resistance
* High impact strength, even at low temperatures
* Excellent chemical resistance
* Low coefficient of friction
* Excellent release properties
* No water absorption
* High mechanical strength, stiffness and creep resistance
* Very good electrical insulation dielectric properties
* Extrusion welded
Properties
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NOMINAL PHYSICAL PROPERTIES (1)
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SI (units)
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Method
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Density
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0.948 g/cm3
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ASTM D1505
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Tensile Strength at Yield, 2 in/min, Type IV bar
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25 MPa
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ASTM D638
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Elongation at Break, 2 in/min, Type IV bar
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700%
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ASTM D638
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Tangent - 16:1 span:depth, 0.5 in/min
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1,200 MPa
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ASTM D790
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ESCR, Condition A (100% Igepal), F50
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>600 h
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ASTM D1693
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ESCR, Condition B (100% Igepal), F50
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>600 h
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ASTM D1693
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Durometer Hardness, Type D (Shore D)
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68
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ASTM D2240
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Vicat Softening Temperature, Loading 1, Rate A
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126°C
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ASTM D1525
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Heat Deflection Temperature, 66 psi, Method A
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78°C
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ASTM D648
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Brittleness Temperature, Type A, Type I specimen
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<-75°C
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ASTM D746
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Tensile Impact, Type S bar
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190 kJ/m2
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ASTM D1822
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Material Comparisons
Material Specific density (averaged)
Aluminum 2.56
Steel 7.85
Stainless Steel 7.65
HMWPE 0.95
Price Comparisons
Current wholesale price (based on current market research and are sourced locally)
(2400 x 1200)
Material Price per Kg weight (3mm) Price per sheet (2.88m2)
Aluminum (50/83) $8.10 22.11kg $179.09
Stainless Steel (316) $6.21 66.10kg $410.48
Steel $1.50 67.82kg $101.73
HMWPE $4.70 8.21kg $38.59
Price per sheet for 8000L tank with material at above rate and thickness of material based on material used
Sheet size 3000mm x 1500mm (4.5m2)
Material Price per sheet
Aluminum 5mm $466.56
Stainless Steel 3mm $641.37
Steel (Mild)4mm $211.95
HMWPE 12mm $271.11
To build an 8000L tank of the same dimensions using the same configuration for baffles excreta we would require 10 sheets
The material price for 10 sheets is as follows:
Material Price per 10 sheets
Aluminum 5mm $4665.60
Stainless Steel 3mm $6413.70
Steel (Mild)4mm $2119.50
HMWPE 12mm $2711.10
The fabrication times for these products are fairly close although plastic and aluminum being much lighter require less
handling. Cutting, welding and finish work are much the same except for steel which requires some form of protective coating.
Comparing the finished tank weight based on 10 sheets
Material Tank weight
Aluminum 5mm 576 kg
Stainless Steel 3mm 1032 kg
Steel (Mild) 4mm 1413 kg
HMWPE 12mm 513 kg
When compared with HMWPE:
Aluminum will corrode, is prone to dissimilar metal corrosion and electrolysis and is twice the price.
Stainless Steel is prone to dissimilar metal corrosion is twice the weight and three times the price
Steel is around the same cost to build but then needs protective coatings, will still rust and is three times the weight.
HMWPE can be specified to your customers exact requirements Colour, UV Stabilizers, fire retardants and chemical inhibitors
can be added to create product specific to its environment.
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