{"version":"1.0","provider_name":"Bulldog Castors Blog","provider_url":"https:\/\/www.bulldogcastors.co.uk\/blog","title":"Caster Wheels Mechanical Properties Rubber - Bulldog Castors Blog","type":"rich","width":600,"height":338,"html":"<blockquote class=\"wp-embedded-content\" data-secret=\"0qjvmwRkv2\"><a href=\"https:\/\/www.bulldogcastors.co.uk\/blog\/caster-wheels-mechanical-properties-astm-d2000\/\">Caster Wheels Mechanical Properties Rubber<\/a><\/blockquote><iframe sandbox=\"allow-scripts\" security=\"restricted\" src=\"https:\/\/www.bulldogcastors.co.uk\/blog\/caster-wheels-mechanical-properties-astm-d2000\/embed\/#?secret=0qjvmwRkv2\" width=\"600\" height=\"338\" title=\"&#8220;Caster Wheels Mechanical Properties Rubber&#8221; &#8212; Bulldog Castors Blog\" data-secret=\"0qjvmwRkv2\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\" class=\"wp-embedded-content\"><\/iframe><script type=\"text\/javascript\">\n\/*! This file is auto-generated *\/\n!function(d,l){\"use strict\";var e=!1,o=!1;if(l.querySelector)if(d.addEventListener)e=!0;if(d.wp=d.wp||{},!d.wp.receiveEmbedMessage)if(d.wp.receiveEmbedMessage=function(e){var t=e.data;if(t)if(t.secret||t.message||t.value)if(!\/[^a-zA-Z0-9]\/.test(t.secret)){for(var r,a,i,s=l.querySelectorAll('iframe[data-secret=\"'+t.secret+'\"]'),n=l.querySelectorAll('blockquote[data-secret=\"'+t.secret+'\"]'),o=new RegExp(\"^https?:$\",\"i\"),c=0;c<n.length;c++)n[c].style.display=\"none\";for(c=0;c<s.length;c++)if(r=s[c],e.source===r.contentWindow){if(r.removeAttribute(\"style\"),\"height\"===t.message){if(1e3<(i=parseInt(t.value,10)))i=1e3;else if(~~i<200)i=200;r.height=i}if(\"link\"===t.message)if(a=l.createElement(\"a\"),i=l.createElement(\"a\"),a.href=r.getAttribute(\"src\"),i.href=t.value,o.test(i.protocol))if(i.host===a.host)if(l.activeElement===r)d.top.location.href=t.value}}},e)d.addEventListener(\"message\",d.wp.receiveEmbedMessage,!1),l.addEventListener(\"DOMContentLoaded\",t,!1),d.addEventListener(\"load\",t,!1);function t(){if(!o){o=!0;for(var e,t,r,a=-1!==navigator.appVersion.indexOf(\"MSIE 10\"),i=!!navigator.userAgent.match(\/Trident.*rv:11\\.\/),s=l.querySelectorAll(\"iframe.wp-embedded-content\"),n=0;n<s.length;n++){if(!(r=(t=s[n]).getAttribute(\"data-secret\")))r=Math.random().toString(36).substr(2,10),t.src+=\"#?secret=\"+r,t.setAttribute(\"data-secret\",r);if(a||i)(e=t.cloneNode(!0)).removeAttribute(\"security\"),t.parentNode.replaceChild(e,t);t.contentWindow.postMessage({message:\"ready\",secret:r},\"*\")}}}}(window,document);\n<\/script>\n","thumbnail_url":"https:\/\/www.bulldogcastors.co.uk\/blog\/wp-content\/uploads\/CASTER-WHEELS-ASTM-LOGO-3.png","thumbnail_width":200,"thumbnail_height":200,"description":"Caster Wheels Mechanical Properties of Rubber Products As discussed in our previous Blog about Natural Rubber, it can extremely difficult to tell the difference between high grade\u00a0rubber casters and a medium or low grade rubber casters.\u00a0 After all, most rubber looks pretty much the same, however in the case of Rubber Caster Wheels, whilst the appearance may be the same there could be many significant differences that affect the performance and life of the Casters wheel, for example Abrasion &amp; Wear Resistance, Compression Set, Creep, Resilience, Hysteresis (Heat Build Up) to name a few.\u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 \u00a0 Considering the above fact, it is important that when specifying a Rubber Caster Wheels Mechanical Properties and grade that a complete specification is defined, allowing the products mechanical properties to be controlled. The American Society of Testing and Materials (ASTM) have developed an International Standard for specifying the mechanical properties of Vulcanised Rubber Products, such as Caster Wheels, Rubber Mouldings &amp; Industrial Rubber Goods.\u00a0 This standard is called ASTM D 2000: Standard Classification System for rubber products. The ASTM D2000 standard can be used to specify almost any mechanical property, including the specifying Rubber Caster Wheels Mechanical Properties. \u00a0The specification is given as a \u201ccode\u201d, called a \u201cLine Call Out\u201d which details the required mechanical properties. This code can be provided to manufacturers and noted on drawings and specification documents.\u00a0 All Rubber Based Caster Wheels can be defined by \u201cLine Call Out\u201d specification. The ASTM D2000 Line Call Out is also extremely useful for Quality Testing and Inspection purposes, as all parts of the defined specification can be tested and measured to ensure they conform. This may be an abrasion test of the Casters Rubber Wheels, or the resistance to a certain fluid or chemical. A typical Line Call Out is specified below, where each part of the \u201ccode\u201d defines a specific requirement.\u00a0 This would be a typical Line Call Out for a Black Rubber Caster Wheels Mechanical Properties, in which we will explain below in detail: ASTM D2000 \u00a0M 4 AA 7 14 A13 B13 C12 G21 Z1 How to read and ASTM D2000 Line Call Out As discussed above, the Line Call Out specifies the\u00a0Caster Wheels Mechanical Properties, its Test Method and corresponding property requirements.\u00a0 Below we will break down the above example Line Call Out into its separate parts, and describe their meaning: ASTM Standard Reference ASTM D 2000 M 4 AA 7 14 A13 B13 C12 G21 Z1 The \u201cASTM D2000\u201d part of the code specifies which ASTM standard is being used.\u00a0 In this case it is the ASTM D2000 \u2013 Specifying Mechanical Properties for Rubber Products Units of Measurement (Metric\/Imperial) ASTM D2000 M 4 AA 7 14 A13 B13 C12 G21 Z1 The &#8216;M&#8217; indicates Metric units (for example MPa).\u00a0 If the \u201cM\u201d is not present it indicates imperial measurements (for example PSI). Grade of Requirements ASTM D2000 M 4 AA 7 14 A13 B13 C12 G21 Z1 The Grade Number, in this case \u201c4\u201d indicates the allowable deviation of mechanical properties after a test (for example, a maximum change of the rubber hardness of the wheels tires after a fuel immersion test). Material &#8211; Heat Resistance ASTM D2000 M 4 AA 7 14 A13 B13 C12 G21 Z1 The first letter of the 2 digit reference, in this case an \u201cA\u201d, specifies the required Heat Resistance of the Rubber Caster Wheels tire, according to ASTM D573.\u00a0 This specification relates to a constant temperature that the rubber wheel must withstand, in this case 70\u00b0C and must not be confused for a materials resistance to short term temperatures. In the case of Castor Wheels, the majority of applications will require no more than \u201cA\u201d or \u201c70\u00b0C\u201d, however our Polymer based Casters can accommodate above 350\u00b0C. The letters below show the related temperature requirements: A =\u00a0\u00a0 70\u00b0C B = 100\u00b0C C = 125\u00b0C D = 150\u00b0C E = 175\u00b0C F = 200\u00b0C G = 225\u00b0C H = 250\u00b0C Material &#8211; Oil Resistance ASTM D2000 M 4 AA 7 14 A13 B13 C12 G21 Z1 The second letter of the 2 digit reference, in this case also an \u201cA\u201d, specifies the required Resistance to Oil (IRM 903 Oil) according to ASTM D471, where the rubber casters wheel is submersed in the oil for a set period of time (70 hours) and at a controlled temperature, after which the amount of swell is measured.\u00a0 This can be important where the equipment is used in an area where contaminants are present, such as a Tool Trolley on Casters in an Automotive Workshop. The letters below show the related maximum oil swell percentage: A &#8211; No Requirement B &#8211; 140% Swell C &#8211; 120% Swell D &#8211; 100% Swell E &#8211; \u00a080% Swell F &#8211; \u00a060% Swell G &#8211; \u00a040% Swell H &#8211; \u00a030% \u00a0Swell J &#8211; \u00a0 20% Swell K\u00a0&#8211;\u00a0 10% Swell Material Designation (Type and Class) ASTM D2000 M 4 AA 7 14 A13 B13 C12 G21 Z1 The Temperature &amp; Oil Resistance as specified in points 4 &amp; 5 above will dictate the available polymer type that is used for the wheel.\u00a0 Whilst the standard does not always specify the exact polymer, the requirements of Temperature &amp; Oil Resistance narrow down the choice of materials. Therefore whilst a Line Call Out may not specify the exact material, it generally narrows the options as follows: AA &#8211; Natural rubber, Reclaimed Rubber, SBR, Butyl, EP Polybutadiene, Polyisoprene AK &#8211; Polysulfides BA &#8211; Ethylene propylene, high-temperature SBR and Butyl compounds BC &#8211; Chloroprene polymers (Neoprene), cm BE &#8211; Chloroprene polymers (Neoprene), cm BF &#8211; NBR polymers BG &#8211; NBR polymers, Urethanes BK &#8211; NBR CA &#8211; Ethylene Propylene CE &#8211; Chlorosulfonated Polyethylene (Hypalon), cm CH &#8211; NBR polymers, Epichlorohydrin polymers DA &#8211; Ethylene propylene polymers DE &#8211; CM, CSM DF &#8211; Polyacrylic (Butyl-Acrylate type) DH &#8211; Polyacrylic polymers, HNBR EE &#8211; AEM EH &#8211; ACM EK &#8211; FZ FC &#8211; Silicones (High Strength) FE &#8211; Silicones FK &#8211; Fluorinated silicones..."}