{"id":4564,"date":"2026-11-11T02:00:00","date_gmt":"2026-11-11T02:00:00","guid":{"rendered":"https:\/\/onpowbutton.com\/news\/push-button-plastic-hardness-report\/"},"modified":"2026-11-10T04:39:31","modified_gmt":"2026-11-10T04:39:31","slug":"push-button-plastic-hardness-report","status":"publish","type":"post","link":"https:\/\/onpowbutton.com\/it\/news\/push-button-plastic-hardness-report\/","title":{"rendered":"Push Button Plastic Hardness Reports: Check the Indentation Method"},"content":{"rendered":"<style>.onpow-article{font-size:17px;line-height:1.75;overflow-wrap:anywhere}.onpow-article img{max-width:100%;height:auto}.onpow-article figure{margin:28px 0}.onpow-article figcaption{font-size:14px;color:#555}.onpow-table-scroll{max-width:100%;overflow-x:auto}.onpow-article table{border-collapse:collapse;min-width:640px;width:100%}.onpow-article th,.onpow-article td{padding:12px;border:1px solid #ddd;text-align:left}.onpow-article th{background:#f1f4f7}.onpow-video{position:relative;aspect-ratio:16\/9;width:100%}.onpow-video iframe{position:absolute;width:100%;height:100%;border:0}<\/style>\n<article class=\"onpow-article\">\n<nav aria-label=\"Contents\"><strong>Contents<\/strong><\/p>\n<ul>\n<li><a href=\"#section-1\">What an indentation hardness report actually answers<\/a><\/li>\n<li><a href=\"#section-2\">Identify the method before comparing the number<\/a><\/li>\n<li><a href=\"#section-3\">Connect the sample to the purchased component<\/a><\/li>\n<li><a href=\"#section-4\">Review specimen preparation and test conditions<\/a><\/li>\n<li><a href=\"#section-5\">A practical document review table<\/a><\/li>\n<li><a href=\"#section-6\">Separate hardness from damage resistance<\/a><\/li>\n<li><a href=\"#section-7\">Handle supplier differences and conflicting reports<\/a><\/li>\n<li><a href=\"#section-8\">Build a usable acceptance and enquiry record<\/a><\/li>\n<li><a href=\"#section-9\">Frequently asked questions<\/a><\/li>\n<\/ul>\n<\/nav>\n<p>A push button plastic hardness report is useful only when it identifies the indentation method, the tested material and the specimen conditions. A bare hardness number cannot establish how a finished button will resist scratches, impacts or repeated operation. Before comparing suppliers, match the report to the component and resin configuration being ordered, then check whether both results were obtained on a comparable basis. This guide explains how to review that evidence without turning a material measurement into an unsupported product claim. It is intended for buyers and quality teams collecting documentation, rather than as instructions for carrying out a laboratory test.<\/p>\n<h2 id=\"section-1\">What an indentation hardness report actually answers<\/h2>\n<p>Indentation hardness describes a material response to an indenter under defined conditions. For plastics, the method matters because the result belongs to the loading and measurement procedure used. The <a href=\"https:\/\/knowledge.bsigroup.com\/products\/plastics-determination-of-hardness-ball-indentation-method\" rel=\"noopener\" target=\"_blank\">BSI ball indentation standard listing<\/a> identifies ISO 2039-1 as a ball indentation method for plastics. Its presence in a report should lead the reviewer to the applicable procedure and edition, rather than to a general assumption that every hardness test produces interchangeable numbers.<\/p>\n<p>The practical purchasing question is whether the submitted evidence answers the requirement in your specification. If the requirement concerns an identified plastic grade, a properly traceable material report can contribute useful evidence. If the requirement concerns an assembled operator surviving damage, a material hardness number leaves substantial questions unanswered. The report may still be valid while being insufficient for that particular acceptance decision.<\/p>\n<p>Distinguish the test object from the commercial object. A molded test plaque, a sample cut from a component and a completed button are different objects. Record which one was tested. When a report names a resin but the purchase order names an assembled switch, obtain the supplier&#8217;s documented connection between them before accepting the report against that order.<\/p>\n<h2 id=\"section-2\">Identify the method before comparing the number<\/h2>\n<p>Ask for the full method designation, edition, reported quantity and units or scale. A document saying only \u201chardness: passed\u201d gives no comparison basis. A second document with a larger number does not resolve that omission. Have the laboratory explain exactly what its result represents and which specification it was evaluated against.<\/p>\n<p>Do not substitute a Shore reading, a Rockwell scale or an instrumented indentation value for a requested ball indentation result without an agreed technical justification. Different methods use different measurement definitions. This article does not provide a conversion chart because an apparently convenient conversion could create an unjustified equivalence for the material and conditions concerned.<\/p>\n<p>The <a href=\"https:\/\/eprintspublications.npl.co.uk\/5028\/\" rel=\"noopener\" target=\"_blank\">National Physical Laboratory&#8217;s introduction to instrumented indentation<\/a> describes another approach that can evaluate hardness and elastic modulus in an indentation experiment. It is useful background for recognizing method differences. It does not make instrumented indentation the same procedure as ISO 2039-1, and it does not establish a conversion applicable to a particular ONPOW component.<\/p>\n<figure><img decoding=\"async\" alt=\"ONPOW LAS1Y-11\/JC\/ \u2014 original manufacturer product photograph\" loading=\"lazy\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-body1-daily20261110.jpg\"\/><figcaption>ONPOW LAS1Y-11\/JC\/. Product identification example only; this photograph does not establish hardness, optical, thermal, electrical or environmental performance or certification. Confirm the exact ordered configuration and tested equipment scope separately.<\/figcaption><\/figure>\n<h2 id=\"section-3\">Connect the sample to the purchased component<\/h2>\n<p>Start with the exact ordered product configuration and the plastic part whose property matters. A switch may contain several distinct plastic components, and an enclosure, actuator and internal support should not automatically share one material declaration. Ask the supplier to identify the component covered, its material designation and the production version to which the report applies.<\/p>\n<p>The <a href=\"https:\/\/onpowbutton.com\/16mmroundplasticled-product\/\">ONPOW LAS1 product page<\/a> provides an example of a real product family for a documentation request. The photographs here identify products, not laboratory specimens. Neither the page link nor a product photograph proves a particular resin grade, indentation value or hardness certification. Those details require their own relevant documentation for the actual order.<\/p>\n<p>Check whether the report&#8217;s material identifier includes the grade and formulation information needed by your specification. A generic polymer family name may leave colorants, reinforcement and other formulation differences unresolved. Do not infer those differences from appearance. If the report covers a different color or grade, ask the supplier and reviewer whether the relationship is documented adequately for the intended acceptance decision.<\/p>\n<h2 id=\"section-4\">Review specimen preparation and test conditions<\/h2>\n<p>Request a description of how the specimen was made or obtained, its dimensions and the surface tested. A prepared flat coupon is not automatically representative of every molded surface on a finished actuator. Curvature, limited access and support can make direct testing of a component a different proposition. Let the laboratory determine whether the proposed specimen meets its method rather than improvising an acceptance test on incoming stock.<\/p>\n<p>Conditioning and test environment belong in the review record. If one report includes a defined conditioning history and another leaves it blank, do not hide that difference in a comparison spreadsheet. Ask for clarification first. Also record any preparation, storage or treatment that the laboratory considers relevant to interpreting the result.<\/p>\n<p>Look for declared deviations and limitations. A limitation can be a helpful statement of what was actually possible, rather than proof of poor work. The problem arises when an adapted procedure is presented as indistinguishable from a standard test. Separate a fully specified result from an exploratory measurement, and decide whether either one satisfies the agreed purchasing requirement.<\/p>\n<h2 id=\"section-5\">A practical document review table<\/h2>\n<p>Use this qualitative checklist to structure a supplier discussion. It is a purchasing review aid, not a list of standard acceptance limits. Consult the named method and the laboratory for its exact procedural requirements.<\/p>\n<div class=\"onpow-table-scroll\">\n<table>\n<thead>\n<tr>\n<th>Review item<\/th>\n<th>Evidence to request<\/th>\n<th>Action if the evidence is missing<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Method identity<\/td>\n<td>Standard, edition, scale or quantity and units<\/td>\n<td>Suspend numerical comparison until the basis is known<\/td>\n<\/tr>\n<tr>\n<td>Material identity<\/td>\n<td>Grade, relevant formulation identifier and sample reference<\/td>\n<td>Ask how the sample connects to the ordered component<\/td>\n<\/tr>\n<tr>\n<td>Specimen preparation<\/td>\n<td>Source, geometry and tested surface<\/td>\n<td>Ask the laboratory to explain representativeness and suitability<\/td>\n<\/tr>\n<tr>\n<td>Conditions<\/td>\n<td>Conditioning and test environment<\/td>\n<td>Flag the comparison as incomplete<\/td>\n<\/tr>\n<tr>\n<td>Result presentation<\/td>\n<td>Individual or summarized results with an explanation of variation<\/td>\n<td>Clarify whether the evidence supports the specified decision<\/td>\n<\/tr>\n<tr>\n<td>Acceptance basis<\/td>\n<td>Approved specification and decision rule where applicable<\/td>\n<td>Agree the requirement before declaring a pass<\/td>\n<\/tr>\n<tr>\n<td>Change coverage<\/td>\n<td>Production version and handling of material substitutions<\/td>\n<td>Reassess evidence after a relevant change<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p>The method distinction is supported by the BSI listing and the NPL guide linked above. The review actions are suggested documentation controls; they are not a claim that either source mandates this exact procurement workflow.<\/p>\n<figure><img decoding=\"async\" alt=\"ONPOW LAS1F-11\/JC\/ \u2014 original manufacturer product photograph\" loading=\"lazy\" src=\"https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-body2-daily20261110.jpg\"\/><figcaption>ONPOW LAS1F-11\/JC\/. Product identification example only; this photograph does not establish hardness, optical, thermal, electrical or environmental performance or certification. Confirm the exact ordered configuration and tested equipment scope separately.<\/figcaption><\/figure>\n<h2 id=\"section-6\">Separate hardness from damage resistance<\/h2>\n<p>A buyer concerned about cleaning marks should define that surface requirement explicitly. A buyer concerned about a dropped tool should define the relevant impact requirement. A buyer concerned about actuator sticking should investigate the assembled mechanism. None of these questions is answered completely by selecting the largest indentation hardness number.<\/p>\n<p>For impact documentation, use the separate <a href=\"https:\/\/onpowbutton.com\/news\/push-button-ik-report-sample-coverage\/\">IK report and sample coverage guide<\/a>. An impact test and a material indentation test apply different questions to potentially different specimens. Keep their findings in separate fields so a successful material review does not accidentally close an outstanding assembly requirement.<\/p>\n<p>Likewise, material tensile evidence addresses a different loading situation. The <a href=\"https:\/\/onpowbutton.com\/news\/push-button-plastic-tensile-report\/\">plastic tensile report guide<\/a> explains specimen and strain-data checks. Use it when the supplier submits tensile information alongside hardness, but avoid adding the two numbers into a homemade overall durability score. Such a score would need its own validated relationship to the intended application.<\/p>\n<h2 id=\"section-7\">Handle supplier differences and conflicting reports<\/h2>\n<p>Imagine two suppliers submit reports for a replacement plastic actuator. The first identifies a material grade, preparation route and indentation method. The second offers a marketing sheet containing a hardness number without a method. Even if the second number appears better, the immediate task is to resolve the information gap, not award a technical advantage.<\/p>\n<p>A second example is a supplier changing the molding material while retaining the same commercial product family. An older report might remain accurate for the original sample but no longer establish coverage of the current component. Request a dated explanation of the change and the evidence used to support the replacement. Record the decision with the order so future inspectors do not repeatedly interpret the same unresolved documents.<\/p>\n<p>When a test result and a supplier declaration appear inconsistent, keep both originals. Ask the issuing party to clarify specimen identity, report revision and the relevant acceptance basis. Avoid editing a report value into agreement with a product datasheet. The useful outcome is a traceable explanation or replacement document, not a cleaner looking spreadsheet.<\/p>\n<h2 id=\"section-8\">Build a usable acceptance and enquiry record<\/h2>\n<p>Use the <a href=\"https:\/\/onpowbutton.com\/news\/push-button-laboratory-accreditation-scope\/\">laboratory accreditation scope guide<\/a> as the broader documentation framework. Check the relevance of the laboratory&#8217;s claimed scope separately from the sample-to-product relationship. A laboratory&#8217;s competence statement cannot establish that an unidentified sample represents the exact switch component being purchased.<\/p>\n<p>For an enquiry, provide the ordered model, component of concern, intended requirement, applicable material specification and the reason hardness evidence is needed. Ask for the report reference, method and specimen details before requesting a simple pass statement. This makes the supplier response more useful and avoids unnecessary testing that addresses the wrong property.<\/p>\n<p>At receiving inspection, verify that the delivered configuration matches the one evaluated in the documentation record. If the report is incomplete, record a pending evidence request rather than describing the product as failed. If it meets the agreed material requirement, close that requirement specifically and retain any separate assembly checks. Contact ONPOW with the exact configuration and documentation needs to establish what information is available for the proposed order.<\/p>\n<h2 id=\"section-9\">Frequently asked questions<\/h2>\n<h3>Is a harder plastic always better for a push button?<\/h3>\n<p>No. Hardness describes one method-dependent material response. Selection also depends on the component&#8217;s role and the finished product requirements. Define the actual failure or acceptance concern before using hardness evidence to compare alternatives.<\/p>\n<h3>Can I compare two hardness values without knowing the scale?<\/h3>\n<p>No defensible numerical comparison can be made from unspecified values. Obtain the test method, reported quantity, units or scale, specimen identity and conditions, then ask whether the results provide an appropriate common comparison basis.<\/p>\n<h3>Does a product photograph prove the tested plastic grade?<\/h3>\n<p>No. Photographs help identify the commercial product and visible configuration. They do not establish material composition, sample traceability or a test result. Obtain documentation connecting the report to the exact component being ordered.<\/p>\n<h3>Does a hardness report replace an impact or life test?<\/h3>\n<p>No. Material indentation, assembly impact and operating life answer different questions. Review each against its own requirement and retain separate conclusions rather than treating one successful result as evidence that all durability requirements are satisfied.<\/p>\n<h2 id=\"learning-video\">Further learning<\/h2>\n<p>Khan Academy explains stress, strain and elastic versus permanent deformation using a tensile example in steel. This is conceptual background for understanding deformation, not a plastics ball-indentation procedure or an ONPOW test result.<\/p>\n<div class=\"onpow-video\"><iframe src=\"https:\/\/www.youtube-nocookie.com\/embed\/eW5ICEtjN4w\" title=\"Stress vs strain curve | Class 11 (India) | Physics | Khan Academy\" loading=\"lazy\" allow=\"encrypted-media; picture-in-picture\" allowfullscreen><\/iframe><\/div>\n<p><a rel=\"noopener\" href=\"https:\/\/www.youtube.com\/watch?v=eW5ICEtjN4w\" target=\"_blank\">Stress vs strain curve | Class 11 (India) | Physics | Khan Academy \u2014 Khan Academy India &#8211; English<\/a><\/p>\n<\/article>\n<p><script type=\"application\/ld+json\">{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Is a harder plastic always better for a push button?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"No. Hardness describes one method-dependent material response. 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Controllare il metodo di indentazione, la tracciabilit\u00e0 del campione e i limiti di confronto prima di accettare un rapporto sul materiale.<\/p>","protected":false},"author":6,"featured_media":4561,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-4564","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"uagb_featured_image_src":{"full":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110.webp",811,811,false],"thumbnail":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110-150x150.webp",150,150,true],"medium":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110-300x300.webp",300,300,true],"medium_large":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110-768x768.webp",768,768,true],"large":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110.webp",811,811,false],"1536x1536":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110.webp",811,811,false],"2048x2048":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110.webp",811,811,false],"trp-custom-language-flag":["https:\/\/onpowbutton.com\/wp-content\/uploads\/2026\/11\/push-button-plastic-hardness-report-feature-daily20261110-12x12.webp",12,12,true]},"uagb_author_info":{"display_name":"Turbo","author_link":"https:\/\/onpowbutton.com\/it\/author\/turbo\/"},"uagb_comment_info":0,"uagb_excerpt":"Review plastic hardness evidence for push buttons. Check the indentation method, specimen traceability and comparison limits before accepting a material report.","_links":{"self":[{"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/posts\/4564","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/comments?post=4564"}],"version-history":[{"count":1,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/posts\/4564\/revisions"}],"predecessor-version":[{"id":4565,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/posts\/4564\/revisions\/4565"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/media\/4561"}],"wp:attachment":[{"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/media?parent=4564"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/categories?post=4564"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onpowbutton.com\/it\/wp-json\/wp\/v2\/tags?post=4564"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}