80 20 Inc Catalog 21 Page 691 Add-On Components

For the most up to date information on 80/20 products visit 8020.net / 691 Add-On Components ADD-ON COMPONENTS Property Test Method Unit Typical Value Specic Gravity ASTM D-792 g/cm3 0.94 Yield Strength @ 73F ASTM D-638 p.s.i. 3400 Ultimate Tensile Strength @ 73F ASTM D-638 p.s.i. 6800 Break Elongation @ 73F ASTM D-638 % 450 Yield Strength @ 250F Stress Strain Diagram p.s.i. 700 Ultimate Tensile Strength @ 250F Stress Strain Diagram p.s.i. 3300 Break Elongation @ 250F Stress Strain Diagram % 900 Hardness - Rockwell R Scale ASTM D-785 - 64 - Shore D Scale ASTM D-2240 - 67 Flexural Modulus of Elasticity Bend Creep/1 min. value p.s.i. 110,000 Shear Strength ASTM D-732 p.s.i. 3500 Izod Impact @ + 23C ASTM D-256A ft-lbs/in. notch No break @ - 140 C ASTM D-256A ft-lbs/in. notch No break Environmental Stress Cracking @ F50 ASTM D-1693 Mod hrs. 6000 Water Absorption ASTM D-570 - NIL Property UHMW-PE Dry .................................0.10 - 0.22 Water .............................0.05 - 0.10 Oil ..................................0.05 - 0.08 Each material listed below was rotated 24 hours @ 1750 r.p.m. Carbon Steel = abrasive rating of 100. The weight loss for each material is relative to 100. The lower the gure, the better the abrasive resistance. 50-50 sand/water slurry. Materials Static Kinetic Test Method Aluminum* vs. UHMW-PE 0.12 0.016 ASTM D-1894 Mild Steel vs. Mild Steel 0.30 - 0.40 0.25 - 0.35 Mild Steel vs. UHMW-PE 0.15 - 0.20 0.12 - 0.20 UHMW-PE vs. UHMW-PE 0.20 - 0.30 UHMW-PE polymer has a lower coefcient of friction than glass. Its self-lubricating characteristics make it an ideal material for bearings, bushings, valves, wear strips, or any application where sliding contact is encountered. *Anodized 204 R1 Spec on extruded aluminum FDA and USDA Approved UHMW-PE .................................. 15 Nylon .................................31 High MW polyethylene .............. 44 TFE ............................................. 72 Stainless steel ...................84 Polypropylene ........................... 87 Polycarbonate............................. 96 Polyacetal ........................110 TFE/glass ber .........................113 Normal MW polyethylene ......... 125 Phosphor bronze .............193 Yellow brass ............................ 409 Phenolic Iaminate ..................... 571 Hickory wood ...................967 Hi carbon steel ........................ 100 Engineering Specications on UHMW-PE Bearing Pads Abrasive Resistance - Sand Slurry Test Coefcient of Friction Comparison of Dynamic Coefcient of Friction on Polished Steel

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