{"id":13568,"date":"2026-07-10T02:01:50","date_gmt":"2026-07-10T02:01:50","guid":{"rendered":"https:\/\/hlh-js.com\/?p=13568"},"modified":"2026-07-10T02:10:24","modified_gmt":"2026-07-10T02:10:24","slug":"pump-materials-abrasive-media","status":"publish","type":"post","link":"https:\/\/hlh-js.com\/es\/resource\/blog\/pump-materials-abrasive-media\/","title":{"rendered":"Pump Materials for Abrasive Media: High-Chrome Alloy vs. Rubber vs. Ceramic vs. Polyurethane"},"content":{"rendered":"<p><style>\r\n.hlh-pillar{font-family:'Segoe UI',system-ui,-apple-system,sans-serif;color:#25303D;line-height:1.85;max-width:860px;margin:0 auto;font-size:1rem}.hlh-pillar h1{font-size:2em;font-weight:800;color:#1C3D5A;line-height:1.25;margin:0 0 .4em;letter-spacing:-.02em}.hlh-pillar h2{font-size:1.42em;font-weight:700;color:#1C3D5A;margin:2.4em 0 .7em;padding-bottom:.4em;border-bottom:2px solid #DDE3EC;position:relative}.hlh-pillar 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ul{margin:0;padding:0;list-style:none;display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:.4em 1.8em}.hlh-related li{margin:0}.hlh-related li::before{content:'\u2192 ';color:#E5650F;font-weight:700}.hlh-related a{font-size:.86em}.hlh-hr{border:none;border-top:1px solid #DDE3EC;margin:2.3em 0}.hlh-back-link{display:inline-flex;align-items:center;gap:.4em;background:#EEF4FA;color:#1C3D5A;font-size:.82em;font-weight:600;padding:.32em .85em;border-radius:20px;text-decoration:none;margin-bottom:1.3em;border:1px solid #BDD5EE}.hlh-back-link:hover{background:#1C3D5A;color:#fff!important;text-decoration:none}@media(max-width:640px){.hlh-pillar h1{font-size:1.5em}.hlh-pillar h2{font-size:1.22em}.hlh-related ul{grid-template-columns:1fr}.hlh-cta-box{padding:1.8em 1.2em}}\r\n<\/style><\/p>\r\n<div class=\"hlh-pillar\"><a class=\"hlh-back-link\" href=\"https:\/\/hlh-js.com\/resource\/blog\/pumps-for-abrasive-media\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u2190 Pumps for Abrasive Media: Complete Guide<\/a>\r\n<h1>Pump Materials for Abrasive Media: High-Chrome Alloy vs. Rubber vs. Ceramic vs. Polyurethane<\/h1>\r\n<div class=\"hlh-meta-bar\">\ud83d\udccc Published by <strong>Jiangsu Henglihong Technology Co., Ltd.<\/strong>\ud83d\uddd3 Updated: July 2026\u23f1 Reading time: approx. 13 min<\/div>\r\n<div class=\"hlh-lead\">\r\n<p>Selecting the wrong pump material for an abrasive media application is one of the most common and expensive mistakes in industrial pump specification. A rubber liner on a pump handling Mohs 8 alumina will fail in weeks. A high-chrome alloy impeller in fine, low-velocity mineral slurry will outlast rubber but represent over-investment. Ceramic inserts in a high-impact zone will shatter. Material selection is not about choosing the &#8220;hardest&#8221; or &#8220;most abrasion resistant&#8221; option\u2014it is about matching the material&#8217;s wear-resistance mechanism to the specific characteristics of the particles, velocity, and chemistry in your application.<\/p>\r\n<p>This guide covers the four dominant material families used in abrasive pump construction, their wear-resistance mechanisms, selection criteria, and a practical selection matrix. For the full pump selection framework, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/pumps-for-abrasive-media\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pumps for Abrasive Media: The Complete Selection &amp; Buying Guide<\/a>.<\/p>\r\n<\/div>\r\n<nav class=\"hlh-toc\">\r\n<div class=\"hlh-toc__header\">Table of Contents<\/div>\r\n<ol>\r\n<li><a href=\"#two-mechanisms\">Two Fundamentally Different Wear-Resistance Mechanisms<\/a><\/li>\r\n<li><a href=\"#chrome\">High-Chrome White Iron Alloys<\/a><\/li>\r\n<li><a href=\"#rubber\">Natural &amp; Synthetic Rubber<\/a><\/li>\r\n<li><a href=\"#polyurethane\">Polyurethane<\/a><\/li>\r\n<li><a href=\"#ceramic\">Ceramics &amp; Ceramic Composites<\/a><\/li>\r\n<li><a href=\"#matrix\">Material Selection Matrix<\/a><\/li>\r\n<li><a href=\"#mistakes\">Common Material Selection Mistakes<\/a><\/li>\r\n<li><a href=\"#mat-faq\">Preguntas frecuentes<\/a><\/li>\r\n<\/ol>\r\n<\/nav>\r\n<section id=\"two-mechanisms\">\r\n<h2>1. Two Fundamentally Different Wear-Resistance Mechanisms<\/h2>\r\n<p>All abrasion-resistant pump materials fall into one of two categories, based on how they resist wear:<\/p>\r\n<ul>\r\n<li><strong>Hardness-based resistance (hard metals and ceramics):<\/strong> The pump material is harder than the abrasive particle. The particle cannot cut into the surface because the surface resists deformation. This requires the pump material Mohs equivalent hardness to exceed the particle hardness\u2014ideally by a significant margin. High-chrome alloys (Mohs equivalent ~8\u20139) and ceramics (Mohs 9+) use this mechanism.<\/li>\r\n<li><strong>Elastic deformation-based resistance (rubber and polyurethane):<\/strong> The pump material is softer than the particle but flexes elastically under impact, absorbing and returning kinetic energy without permanent deformation. The particle dents the surface momentarily and is ejected rather than cutting through. This mechanism works best for fine, rounded particles at moderate velocities. It fails when particles are angular (cutting through the elastic surface), coarse (exceeding the elastic recovery depth), or when velocity is very high (rate of impact exceeds elastic recovery speed).<\/li>\r\n<\/ul>\r\n<p>Understanding which mechanism applies to your specific abrasive is the starting point of any material selection decision. For more on why particles damage pump materials, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-abrasive-particles-damage-pumps\/\" target=\"_blank\" rel=\"noopener noreferrer\">How Abrasive Particles Damage Pumps: Wear Mechanisms Explained<\/a>.<\/p>\r\n<\/section>\r\n<section id=\"chrome\">\r\n<h2>2. High-Chrome White Iron Alloys<\/h2>\r\n<div class=\"hlh-mat-card\">\r\n<div class=\"hlh-mat-header chrome\">\u2699\ufe0f High-Chrome White Iron (Cr27, Cr28) <span class=\"hlh-mat-badge\">Hardness-Based<\/span><\/div>\r\n<div class=\"hlh-mat-body\">\r\n<div class=\"hlh-mat-specs\"><span class=\"hlh-spec-tag\">Hardness: 600\u2013800 HB<\/span><span class=\"hlh-spec-tag\">Mohs equiv: ~8\u20139<\/span><span class=\"hlh-spec-tag\">Max temp: 350\u00b0C<\/span><span class=\"hlh-spec-tag\">pH range: 4\u201312<\/span><\/div>\r\n<p>High-chromium white iron is the dominant material for heavy-duty abrasive pump impellers, volute casings, and wear plates. The alloy typically contains 26\u201330% chromium and 2.5\u20133.5% carbon, which combine to form a dense dispersion of hard chromium carbide particles within a tough iron matrix. The chromium carbide particles (Vickers hardness 1400\u20131800 HV) provide the primary abrasion resistance, while the iron matrix provides the fracture toughness needed to resist impact without shattering.<\/p>\r\n<p>High-chrome alloys are produced by casting and are used as wear liners and impellers in applications involving rock, ore, sand, and other mineral abrasives where particles are coarse, hard, and angular. The material&#8217;s high chromium content also provides moderate corrosion resistance in near-neutral slurries (pH 4\u201310), though it is not appropriate for strongly acidic or oxidizing environments.<\/p>\r\n<p><strong>Best for:<\/strong> Mining tailings and ore concentrate pumps; dredging; sand and gravel; cement slurry; any coarse, hard, angular mineral abrasive above Mohs 6.5 at high flow rates.<\/p>\r\n<p><strong>Limitaciones:<\/strong> Brittle\u2014susceptible to fracture in high-impact applications; not suitable for pH below 4 or for fine, low-velocity slurries where rubber would provide equivalent life at lower cost; heavier than polymer options.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n<section id=\"rubber\">\r\n<h2>3. Natural &amp; Synthetic Rubber<\/h2>\r\n<div class=\"hlh-mat-card\">\r\n<div class=\"hlh-mat-header rubber\">\ud83d\udfe2 Natural &amp; Synthetic Rubber <span class=\"hlh-mat-badge\">Elastic-Deformation-Based<\/span><\/div>\r\n<div class=\"hlh-mat-body\">\r\n<div class=\"hlh-mat-specs\"><span class=\"hlh-spec-tag\">Hardness: 35\u201365 Shore A<\/span><span class=\"hlh-spec-tag\">Max temp: 65\u00b0C (NR) \/ 120\u00b0C (EPDM)<\/span><span class=\"hlh-spec-tag\">pH range: 4\u201312<\/span><span class=\"hlh-spec-tag\">Particle limit: Mohs \u2264 6.5<\/span><\/div>\r\n<p>Rubber liners and impellers resist abrasion through elastic deformation: a particle striking the rubber surface causes temporary local deformation, absorbs energy, and is ejected as the rubber springs back. No material is permanently removed. This mechanism is highly effective for fine, rounded particles at moderate velocities and concentrations\u2014conditions common in fine mineral slurry, water treatment, and chemical slurry applications.<\/p>\r\n<p>Natural rubber (NR) offers excellent resilience and performs well with most fine mineral slurries and water-based carrier fluids. Neoprene (CR) extends the temperature limit to 80\u00b0C and improves oil resistance. EPDM is preferred for hot water, steam-traced pipelines, and mildly oxidizing conditions up to 120\u00b0C. Nitrile (NBR) is chosen for oil-containing or hydrocarbon slurry applications.<\/p>\r\n<p>Rubber fails rapidly in three situations: when particles are angular (cutting through the surface rather than deforming it); when particles exceed approximately Mohs 6.5\u20137 (rubber cannot elastically recover fast enough to avoid progressive cutting); and when particles are coarser than approximately 6\u20138 mm (individual particles carry too much energy for elastic recovery).<\/p>\r\n<p><strong>Best for:<\/strong> Fine mineral slurries (d50 below 3 mm); rounded particles (glass beads, steel shot, soft ore minerals); water treatment sludge; chemical slurries with mildly acidic or alkaline carriers at moderate temperature.<\/p>\r\n<p><strong>Limitaciones:<\/strong> Fails rapidly with angular particles above Mohs 6.5; temperature limited; degraded by hydrocarbon carriers (NR) and strong oxidizing agents.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n<section id=\"polyurethane\">\r\n<h2>4. Polyurethane<\/h2>\r\n<div class=\"hlh-mat-card\">\r\n<div class=\"hlh-mat-header pu\">\ud83d\udd37 Polyurethane <span class=\"hlh-mat-badge\">Hybrid Mechanism<\/span><\/div>\r\n<div class=\"hlh-mat-body\">\r\n<div class=\"hlh-mat-specs\"><span class=\"hlh-spec-tag\">Hardness: 75\u201395 Shore A<\/span><span class=\"hlh-spec-tag\">Max temp: 80\u00b0C<\/span><span class=\"hlh-spec-tag\">pH range: 5\u201310<\/span><span class=\"hlh-spec-tag\">Particle limit: Mohs \u2264 7<\/span><\/div>\r\n<p>Polyurethane occupies the space between rubber and hard metals\u2014harder than rubber (better resistance to angular particles) but still relying partly on elastic deformation for its abrasion resistance. It typically delivers 2\u20133\u00d7 the service life of natural rubber in fine-to-medium abrasive applications where particles are moderately angular or where particle size exceeds the range where soft rubber is optimal.<\/p>\r\n<p>Polyurethane performs well in applications where particles have moderate hardness (Mohs 5\u20137), moderate angularity, and concentrations in the 10\u201330% range. It is less chemical-resistant than most rubbers and more susceptible to hydrolytic degradation in hot water or strongly acidic environments. It is not appropriate for particles above Mohs 7 or in applications requiring broad chemical resistance.<\/p>\r\n<p><strong>Best for:<\/strong> Fine to medium mineral slurries; intermediate hardness particles (Mohs 5\u20137); applications where rubber service life is inadequate but hard metal is over-specified; cyclone feeds and product sumps in mineral processing.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n<section id=\"ceramic\">\r\n<h2>5. Ceramics &amp; Ceramic Composites<\/h2>\r\n<div class=\"hlh-mat-card\">\r\n<div class=\"hlh-mat-header ceramic\">\ud83d\udc8e Alumina &amp; Silicon Carbide Ceramics <span class=\"hlh-mat-badge\">Hardness-Based, Brittle<\/span><\/div>\r\n<div class=\"hlh-mat-body\">\r\n<div class=\"hlh-mat-specs\"><span class=\"hlh-spec-tag\">Al\u2082O\u2083 hardness: Mohs 9<\/span><span class=\"hlh-spec-tag\">SiC hardness: Mohs 9\u20139.5<\/span><span class=\"hlh-spec-tag\">Max temp: 1400\u00b0C<\/span><span class=\"hlh-spec-tag\">Chemical: Excellent<\/span><\/div>\r\n<p>Alumina (Al\u2082O\u2083) and silicon carbide (SiC) ceramics provide extreme hardness with excellent chemical resistance, making them the material of choice for the most demanding abrasive applications\u2014very fine, very hard particles (Mohs 8+) in precision pumping or chemical applications where metal contamination is unacceptable. Ceramic components are used as impellers, wear inserts, shaft sleeves, and liner tiles in applications where their extraordinary hardness advantage justifies the premium cost and brittleness risk.<\/p>\r\n<p>The critical limitation of ceramics is brittleness. Unlike hard metals, ceramics cannot absorb energy through plastic deformation. They fail catastrophically under impact loads, mechanical shock, or thermal cycling. Ceramics are therefore appropriate only for applications where flow is steady and continuous, particle impact is low-energy, and the pump is not subject to external mechanical shock. Never use ceramics in high-velocity, large-particle impact zones.<\/p>\r\n<p><strong>Best for:<\/strong> Semiconductor slurry and precision polishing compounds; alumina and SiC slurry in advanced materials manufacturing; fine chemical abrasive slurries at moderate velocity; applications requiring zero metal contamination of the process fluid.<\/p>\r\n<p><strong>Limitaciones:<\/strong> Brittle \u2014 fails under mechanical shock or thermal cycling; high cost; limited availability in complex geometries; not suitable for coarse particles or high-impact zones.<\/p>\r\n<\/div>\r\n<\/div>\r\n<\/section>\r\n<section id=\"matrix\">\r\n<h2>6. Material Selection Matrix<\/h2>\r\n<div class=\"hlh-table-wrap\">\r\n<table class=\"hlh-table\">\r\n<thead>\r\n<tr>\r\n<th>Selection Criterion<\/th>\r\n<th>High-Chrome Alloy<\/th>\r\n<th>Natural Rubber<\/th>\r\n<th>Polyurethane<\/th>\r\n<th>Ceramic (Al\u2082O\u2083\/SiC)<\/th>\r\n<\/tr>\r\n<\/thead>\r\n<tbody>\r\n<tr>\r\n<td>Particle hardness &lt; Mohs 6.5<\/td>\r\n<td>Overkill (cost) \u25ce<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606 Good<\/td>\r\n<td>Overkill (cost\/risk) \u25ce<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Particle hardness Mohs 6.5\u20138<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<td>\u2717 Not suitable<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606 Marginal<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606 Good<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Particle hardness &gt; Mohs 8<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606 Good<\/td>\r\n<td>\u2717 Not suitable<\/td>\r\n<td>\u2717 Not suitable<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Angular particle shape<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605<\/td>\r\n<td>\u2605\u2605\u2606\u2606\u2606 Poor<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606 Fair<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Fine particles (d50 &lt; 0.5 mm)<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606 Good<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606 Good<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Coarse particles (d50 &gt; 5 mm)<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<td>\u2605\u2605\u2606\u2606\u2606 Poor<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606 Fair<\/td>\r\n<td>\u2717 Fracture risk<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>pH &lt; 4 (strongly acidic)<\/td>\r\n<td>\u2717 Not suitable<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606 Verify<\/td>\r\n<td>\u2605\u2605\u2606\u2606\u2606 Poor<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605 Best<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>pH 4\u201310 (near-neutral)<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Operating temp &gt; 80\u00b0C<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605<\/td>\r\n<td>\u2605\u2605\u2606\u2606\u2606 (NR), \u2605\u2605\u2605\u2605\u2606 (EPDM)<\/td>\r\n<td>\u2717 Not suitable<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>High-impact\/shock loading<\/td>\r\n<td>\u2605\u2605\u2605\u2606\u2606 (risk of fracture)<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2605<\/td>\r\n<td>\u2605\u2605\u2605\u2605\u2606<\/td>\r\n<td>\u2717 Will fracture<\/td>\r\n<\/tr>\r\n<tr>\r\n<td>Relative material cost<\/td>\r\n<td>Medium<\/td>\r\n<td>Low\u2013Medium<\/td>\r\n<td>Low\u2013Medium<\/td>\r\n<td>Alta<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\n<\/section>\r\n<section id=\"mistakes\">\r\n<h2>7. Common Material Selection Mistakes<\/h2>\r\n<ul>\r\n<li><strong>Choosing rubber for angular particles above Mohs 6.5:<\/strong> Angular particles with hardness above this threshold cut through rubber rather than deforming it. This produces rapid failure that looks like chemical degradation but is actually mechanical cut-through. The solution is polyurethane (Mohs 5\u20137) or high-chrome alloy (Mohs 6.5+).<\/li>\r\n<li><strong>Specifying high-chrome alloy for fine, soft slurry:<\/strong> In applications with fine, soft particles at low velocity and concentration, high-chrome alloy provides marginally better service life than rubber or polyurethane at significantly higher cost and weight. Rubber is usually the better economic choice below Mohs 6.5 and d50 below 2 mm.<\/li>\r\n<li><strong>Using ceramics in high-impact or high-flow applications:<\/strong> Ceramics fail catastrophically under impact loads. Any application with coarse particles, high velocity, or mechanical shock risk should not use brittle ceramic components without specialist engineering review. Ceramic inserts are appropriate only in steady-flow, low-impact zones.<\/li>\r\n<li><strong>Ignoring temperature limits when selecting elastomers:<\/strong> Natural rubber begins losing mechanical properties above 65\u00b0C. In hot-water slurry applications, EPDM (to 120\u00b0C) or PVDF (to 150\u00b0C) should be specified. Failing to account for temperature produces accelerated elastomer degradation that masquerades as abrasion failure.<\/li>\r\n<\/ul>\r\n<p>For guidance on impeller and liner design options within each material category, see: <a href=\"https:\/\/hlh-js.com\/resource\/blog\/wear-resistant-impeller-liner-design-abrasive-pumps\/\" target=\"_blank\" rel=\"noopener noreferrer\">Wear-Resistant Impeller &amp; Liner Design for Abrasive Pumps<\/a>.<\/p>\r\n<\/section>\r\n<hr class=\"hlh-hr\" \/>\r\n<section id=\"mat-faq\">\r\n<h2>Preguntas frecuentes<\/h2>\r\n<div class=\"hlh-faq-item\">\r\n<div class=\"hlh-faq-q\">What is the hardest pump material available for abrasive slurry?<\/div>\r\n<div class=\"hlh-faq-a\">Silicon carbide (SiC) ceramic components achieve Mohs 9\u20139.5, making them among the hardest materials available for pump construction. Alumina (Al\u2082O\u2083) components at Mohs 9 are slightly softer but more readily available and easier to manufacture in complex shapes. High-chrome white iron alloys are softer (approximately Mohs equivalent 8\u20139) but offer better fracture toughness for applications with any impact loading. For most industrial abrasive slurry applications, high-chrome alloy provides the best combination of hardness and toughness. Ceramics are reserved for the most demanding fine-particle, low-impact applications.<\/div>\r\n<\/div>\r\n<div class=\"hlh-faq-item\">\r\n<div class=\"hlh-faq-q\">Can I mix rubber and high-chrome components in the same pump?<\/div>\r\n<div class=\"hlh-faq-a\">Yes, and this is often the optimal approach. Many pump designs allow the impeller (in a high-velocity, high-impact zone) to be specified in one material while the casing liner (experiencing different wear conditions) is specified in another. For example, a high-chrome impeller paired with a rubber liner is common when particle characteristics make rubber viable for the casing but not for the high-velocity impeller zones. Discuss material options for each individual component with your pump manufacturer and select each independently based on the wear conditions in that specific zone.<\/div>\r\n<\/div>\r\n<div class=\"hlh-faq-item\">\r\n<div class=\"hlh-faq-q\">How does water temperature affect rubber liner performance in abrasive slurry?<\/div>\r\n<div class=\"hlh-faq-a\">Temperature has two effects on rubber liners. First, above approximately 50\u201360\u00b0C, natural rubber begins to lose elastic stiffness, reducing its energy-absorption capacity and accelerating wear rates. Second, elevated temperature accelerates aging and oxidative degradation of the rubber matrix, reducing the liner&#8217;s mechanical integrity independent of abrasive wear. For applications above 65\u00b0C, EPDM synthetic rubber (suitable to 120\u00b0C) should be specified instead of natural rubber. At temperatures above 120\u00b0C, polymer or ceramic linings with appropriate chemical resistance are required.<\/div>\r\n<\/div>\r\n<div class=\"hlh-faq-item\">\r\n<div class=\"hlh-faq-q\">Is polyurethane always better than rubber for abrasive service?<\/div>\r\n<div class=\"hlh-faq-a\">Not always. Polyurethane outperforms natural rubber for angular particles of moderate hardness (Mohs 5\u20137) and for particles that would cut through soft rubber. However, for very fine, rounded particles at low velocity and moderate hardness (below Mohs 6), natural rubber&#8217;s superior elasticity provides comparable or better performance at lower cost. Polyurethane is also more susceptible to hydrolytic degradation in hot water and strongly acidic environments where EPDM rubber is preferred. Select based on specific particle characteristics and carrier fluid chemistry rather than defaulting to &#8220;harder is better.&#8221;<\/div>\r\n<\/div>\r\n<\/section>\r\n<div class=\"hlh-cta-box\">\r\n<h2>Consistent Abrasive Media \u2014 Consistent Pump Material Performance<\/h2>\r\n<p>The wear-resistance mechanism of every pump material depends on the particle hardness, size, and shape interacting with it. Jiangsu Henglihong Technology Co., Ltd. manufactures steel shot, steel grit, glass beads, and other abrasive media to certified hardness grades and tight size distributions \u2014 so your material selection produces the service life it was designed for, every batch.<\/p>\r\n<a class=\"hlh-cta-btn\" href=\"https:\/\/hlh-js.com\/contact\/\" target=\"_blank\" rel=\"noopener noreferrer\">Request Product Certifications \u2192<\/a><\/div>\r\n<div class=\"hlh-related\">\r\n<div class=\"hlh-related__title\">Related Resources<\/div>\r\n<ul>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/pumps-for-abrasive-media\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pumps for Abrasive Media: The Complete Guide<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-abrasive-particles-damage-pumps\/\" target=\"_blank\" rel=\"noopener noreferrer\">How Abrasive Particles Damage Pumps<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/wear-resistant-impeller-liner-design-abrasive-pumps\/\" target=\"_blank\" rel=\"noopener noreferrer\">Wear-Resistant Impeller &amp; Liner Design<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/how-to-select-pump-abrasive-media\/\" target=\"_blank\" rel=\"noopener noreferrer\">How to Select a Pump for Abrasive Media<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/pumps-corrosive-abrasive-media\/\" target=\"_blank\" rel=\"noopener noreferrer\">Pumps for Corrosive AND Abrasive Media<\/a><\/li>\r\n<li><a href=\"https:\/\/hlh-js.com\/resource\/blog\/estimate-pump-wear-rate-abrasive-slurry\/\" target=\"_blank\" rel=\"noopener noreferrer\">How to Estimate Pump Wear Rate<\/a><\/li>\r\n<\/ul>\r\n<\/div>\r\n<\/div>\r\n<p><script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\",\n    \"@type\": \"Article\",\n    \"headline\": \"Pump Materials for Abrasive Media: High-Chrome Alloy vs. Rubber vs. Ceramic vs. Polyurethane\",\n    \"datePublished\": \"2026-07-01\",\n    \"dateModified\": \"2026-07-01\",\n    \"author\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n        \"url\": \"https:\\\/\\\/hlh-js.com\"\n    },\n    \"publisher\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Jiangsu Henglihong Technology Co., Ltd.\",\n        \"url\": \"https:\\\/\\\/hlh-js.com\"\n    },\n    \"mainEntityOfPage\": {\n        \"@type\": \"WebPage\",\n        \"@id\": \"https:\\\/\\\/hlh-js.com\\\/resource\\\/blog\\\/pump-materials-abrasive-media\\\/\"\n    }\n}<\/script><\/p>","protected":false},"excerpt":{"rendered":"<p>\u2190 Pumps for Abrasive Media: Complete Guide Pump Materials for  [&#8230;]<\/p>","protected":false},"author":1,"featured_media":13570,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[62,175,138],"tags":[],"class_list":["post-13568","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-industry","category-resource"],"_links":{"self":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/13568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/comments?post=13568"}],"version-history":[{"count":3,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/13568\/revisions"}],"predecessor-version":[{"id":13616,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/posts\/13568\/revisions\/13616"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media\/13570"}],"wp:attachment":[{"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/media?parent=13568"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/categories?post=13568"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hlh-js.com\/es\/wp-json\/wp\/v2\/tags?post=13568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}