{"id":3894,"date":"2026-10-16T08:00:00","date_gmt":"2026-10-16T08:00:00","guid":{"rendered":"https:\/\/www.leierwocasting.com\/?p=3894"},"modified":"2026-10-22T03:47:58","modified_gmt":"2026-10-22T03:47:58","slug":"duplex-stainless-steel-qualifying-a-new-casting-supplier","status":"publish","type":"post","link":"https:\/\/www.leierwocasting.com\/ms\/duplex-stainless-steel-qualifying-a-new-casting-supplier\/","title":{"rendered":"Duplex Stainless Steel: Qualifying a New Casting Supplier"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><h2>Jadual Kandungan<\/h2><nav><ul><li class=\"\"><a href=\"#key-purchasing-decisions-for-duplex-stainless-steel\">Key purchasing decisions for duplex stainless steel<\/a><\/li><li class=\"\"><a href=\"#review-the-design-and-interfaces\">Review the design and interfaces<\/a><\/li><li class=\"\"><a href=\"#compare-the-purchasing-options\">Compare the purchasing options<\/a><\/li><li class=\"\"><a href=\"#select-the-manufacturing-route\">Select the manufacturing route<\/a><\/li><li class=\"\"><a href=\"#inspection-requirements-for-duplex-stainless-steel\">Inspection requirements for duplex stainless steel<\/a><\/li><li class=\"\"><a href=\"#apply-the-review-to-a-practical-case\">Apply the review to a practical case<\/a><\/li><li class=\"\"><a href=\"#define-a-complete-quotation-scope\">Define a complete quotation scope<\/a><\/li><li class=\"\"><a href=\"#discuss-the-component-with-leierwo\">Discuss the component with Leierwo<\/a><\/li><li class=\"\"><a href=\"#frequently-asked-questions\">Frequently asked questions<\/a><\/li><\/ul><\/nav><\/div>\n\n\n<p class=\"wp-block-paragraph\">For buyers reviewing duplex stainless steel, a useful specification connects the service, the approved drawing and the delivered component. This guide examines the purchasing question \u201cQualifying a New Casting Supplier\u201d. Use it to organize the supplier discussion before approving material, tooling or production.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"key-purchasing-decisions-for-duplex-stainless-steel\">Key purchasing decisions for duplex stainless steel<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Duplex stainless steel combines ferritic and austenitic phases, so chemistry alone does not establish an acceptable casting. Supplier qualification should connect the specified grade, heat treatment, section geometry and inspection evidence. The objective is repeatable production of the required condition, not merely a compliant alloy name.<\/p>\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23.jpg\" alt=\"Centrifugal pump casing with machined mounting openings\" class=\"wp-image-191\" srcset=\"https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23.jpg 800w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23-300x300.jpg 300w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23-150x150.jpg 150w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23-768x768.jpg 768w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23-500x500.jpg 500w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23-600x600.jpg 600w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/23-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"review-the-design-and-interfaces\">Review the design and interfaces<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Identify the thickest sections and abrupt junctions on the component. Discuss how the foundry will achieve the required treatment throughout the geometry. Keep proposed weld repairs and subsequent thermal operations within the agreed manufacturing plan.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"compare-the-purchasing-options\">Compare the purchasing options<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Use this comparison when reviewing duplex stainless steel against a controlled drawing and purchase specification.<\/p>\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th>Purchasing approach<\/th><th>Main implication<\/th><th>What to resolve<\/th><\/tr><\/thead><tbody><tr><td>Certificate-only qualification<\/td><td>Reviews a document<\/td><td>May miss process and geometry effects<\/td><\/tr><tr><td>Production-representative qualification<\/td><td>Connects material and manufacturing<\/td><td>Requires an agreed sampling plan<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"select-the-manufacturing-route\">Select the manufacturing route<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Discuss the geometry and material requirements before tooling is frozen. Thick bosses, thin adjoining walls and enclosed regions can need different production attention. The foundry should explain its proposed route and evidence package, while the design authority approves material and acceptance requirements.<\/p>\n\n\n<p class=\"wp-block-paragraph\">For a project involving duplex stainless steel, compare the complete delivered condition before choosing a production route.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"inspection-requirements-for-duplex-stainless-steel\">Inspection requirements for duplex stainless steel<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Agree required chemical, mechanical, microstructural and corrosion-related checks with the design authority. Record where samples come from and when tests occur. The inspection package should demonstrate the ordered requirements without assuming one test proves everything.<\/p>\n\n\n<figure class=\"wp-block-image aligncenter size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7.jpg\" alt=\"Cast valve body with flanged ends and a side port\" class=\"wp-image-99\" srcset=\"https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7.jpg 800w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7-300x300.jpg 300w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7-150x150.jpg 150w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7-768x768.jpg 768w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7-500x500.jpg 500w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7-600x600.jpg 600w, https:\/\/www.leierwocasting.com\/wp-content\/uploads\/2025\/02\/7-100x100.jpg 100w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n\n<h2 class=\"wp-block-heading\" id=\"apply-the-review-to-a-practical-case\">Apply the review to a practical case<\/h2>\n\n\n<p class=\"wp-block-paragraph\">For a new pump-body supplier, first-article approval should cover production-representative material and processing. A separately prepared display sample cannot establish consistency for a heavier or differently shaped casting.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"define-a-complete-quotation-scope\">Define a complete quotation scope<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Include the approved casting grade and specification, section geometry, service environment, machining scope and required tests. State the sampling and acceptance basis rather than requesting a generic duplex certificate. Identify proposed substitutions or repairs as items requiring the agreed technical review.<\/p>\n\n\n<p class=\"wp-block-paragraph\">When discussing duplex stainless steel, separate requirements already approved by engineering from options still awaiting review.<\/p>\n\n\n<p class=\"wp-block-paragraph\">For background reading, see <a href=\"https:\/\/www.imoa.info\/molybdenum-media-centre\/downloads\/practical-guidelines\/fabrication-series.php\" target=\"_blank\" rel=\"noopener noreferrer\">IMOA practical guidelines for duplex stainless steels<\/a>. Use the applicable project specification and approved design for contractual requirements.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"discuss-the-component-with-leierwo\">Discuss the component with Leierwo<\/h2>\n\n\n<p class=\"wp-block-paragraph\">Review Leierwo&#8217;s <a href=\"https:\/\/www.leierwocasting.com\/ms\/stainless-steel-castings\/\">Tuangan Keluli Tahan Karat<\/a> dan <a href=\"https:\/\/www.leierwocasting.com\/ms\/investment-casting\/\">Pemutus Pelaburan<\/a> pages, then send the controlled drawing, material and quantity for a component-specific discussion. Ask the quotation to state the manufacturing scope, inspection evidence and any proposed alternatives.<\/p>\n\n\n<h2 class=\"wp-block-heading\" id=\"frequently-asked-questions\">Frequently asked questions<\/h2>\n\n<div id=\"rank-math-faq\" class=\"rank-math-block\">\n<div class=\"rank-math-list\">\n<div id=\"faq-004-1\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What is the main buying issue with duplex stainless steel?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Duplex stainless steel combines ferritic and austenitic phases, so chemistry alone does not establish an acceptable casting. Supplier qualification should connect the specified grade, heat treatment, section geometry and inspection evidence.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-004-2\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">Which design details should be included?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Identify the thickest sections and abrupt junctions on the component. Discuss how the foundry will achieve the required treatment throughout the geometry.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-004-3\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What should inspection cover when evaluating duplex stainless steel?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Agree required chemical, mechanical, microstructural and corrosion-related checks with the design authority. Record where samples come from and when tests occur.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-004-4\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">How should the purchasing options be compared?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Compare \u201cCertificate-only qualification\u201d and \u201cProduction-representative qualification\u201d against the same finished-part requirements. Key review points are \u201cmay miss process and geometry effects\u201d and \u201crequires an agreed sampling plan\u201d, respectively.<\/p>\n\n<\/div>\n<\/div>\n<div id=\"faq-004-5\" class=\"rank-math-list-item\">\n<h3 class=\"rank-math-question\">What should an inquiry about duplex stainless steel include?<\/h3>\n<div class=\"rank-math-answer\">\n\n<p>Send the approved cast material specification, model, drawing, fluid and temperature information, required condition and inspection plan.<\/p>\n\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class='fluentform ff-default fluentform_wrapper_3 ffs_default_wrap'><form data-form_id=\"3\" id=\"fluentform_3\" class=\"frm-fluent-form fluent_form_3 ff-el-form-top ff_form_instance_3_1 ff-form-loading ffs_default\" data-form_instance=\"ff_form_instance_3_1\" method=\"POST\" action=\"\" ><fieldset  style=\"border: none!important;margin: 0!important;padding: 0!important;background-color: transparent!important;box-shadow: none!important;outline: none!important; min-inline-size: 100%;\">\n                    <legend class=\"ff_screen_reader_title\" style=\"display: block; margin: 0!important;padding: 0!important;height: 0!important;text-indent: -999999px;width: 0!important;overflow:hidden;\">\u7f51\u7ad9\u8868\u5355<\/legend>        <div\n                style=\"display: none!important; position: absolute!important; transform: translateX(1000%)!important;\"\n                class=\"ff-el-group ff-hpsf-container\"\n        >\n            <div class=\"ff-el-input--label asterisk-right\">\n                <label for=\"ff_3_item_sf\" aria-label=\"Langgan\">\n                    Langgan                <\/label>\n            <\/div>\n            <div class=\"ff-el-input--content\">\n                <input type=\"text\"\n                       name=\"item_3__fluent_sf\"\n                       class=\"ff-el-form-control\"\n                       id=\"ff_3_item_sf\"\n                \/>\n            <\/div>\n        <\/div>\n        <input type='hidden' name='__fluent_form_embded_post_id' value='3894' \/><input type=\"hidden\" id=\"_fluentform_3_fluentformnonce\" name=\"_fluentform_3_fluentformnonce\" value=\"77bd32af07\" \/><input type=\"hidden\" name=\"_wp_http_referer\" value=\"\/ms\/wp-json\/wp\/v2\/posts\/3894\" \/><div data-name=\"ff_cn_id_1\"  class='ff-t-container ff-column-container ff_columns_total_2'><div class='ff-t-cell ff-t-column-1' style='flex-basis: 50%;'><div class='ff-el-group ff-el-form-hide_label'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_3_input_text_3' id='label_ff_3_input_text_3' aria-label=\"Nama\">Nama<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"input_text_3\" class=\"ff-el-form-control\" placeholder=\"nama*\" data-name=\"input_text_3\" id=\"ff_3_input_text_3\"  aria-invalid=\"false\" aria-required=\"true\"><\/div><\/div><\/div><div class='ff-t-cell ff-t-column-2' style='flex-basis: 50%;'><div class='ff-el-group ff-el-form-hide_label'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_3_email' id='label_ff_3_email' aria-label=\"E-mel\">E-mel<\/label><\/div><div class='ff-el-input--content'><input type=\"email\" name=\"email\" id=\"ff_3_email\" class=\"ff-el-form-control\" placeholder=\"E-mel*\" data-name=\"email\"  aria-invalid=\"false\" aria-required=\"true\"><\/div><\/div><\/div><\/div><div class='ff-el-group ff-el-form-hide_label'><div class=\"ff-el-input--label ff-el-is-required asterisk-right\"><label for='ff_3_phone' id='label_ff_3_phone' aria-label=\"Telefon\/Bimbit\">Telefon\/Bimbit<\/label><\/div><div class='ff-el-input--content'><input name=\"phone\" class=\"ff-el-form-control ff-el-phone ff_el_with_extended_validation\" type=\"tel\" placeholder=\"telefon*\" data-name=\"phone\" id=\"ff_3_phone\" inputmode=\"tel\"  aria-invalid='false' aria-required=\"true\"><\/div><\/div><div class='ff-el-group ff-el-form-hide_label'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_3_input_text' id='label_ff_3_input_text' aria-label=\"Input Teks\">Input Teks<\/label><\/div><div class='ff-el-input--content'><input type=\"text\" name=\"input_text\" class=\"ff-el-form-control\" placeholder=\"Nama Syarikat Anda\" data-name=\"input_text\" id=\"ff_3_input_text\"  aria-invalid=\"false\" aria-required=\"false\"><\/div><\/div><div class='ff-el-group'><div class='ff-el-input--content'><textarea aria-required=\"false\" aria-labelledby=\"label_ff_3_description\" name=\"description\" id=\"ff_3_description\" class=\"ff-el-form-control\" placeholder=\"Beritahu Kami Mengenai Projek Anda\" rows=\"3\" cols=\"2\" data-name=\"description\" ><\/textarea><\/div><\/div><div class='ff-el-group'><div class=\"ff-el-input--label asterisk-right\"><label for='ff_3_file-upload_1' id='label_ff_3_file-upload_1' aria-label=\"Muat Naik Fail\">Muat Naik Fail<\/label><\/div><div class='ff-el-input--content'><label for='ff_3_file-upload_1' class='ff_file_upload_holder'><span class='ff_upload_btn ff-btn' tabindex='0'>Pilih Fail<\/span> <input type=\"file\" name=\"file-upload\" id=\"ff_3_file-upload_1\" class=\"ff-el-form-control  ff-screen-reader-element\" data-name=\"file-upload\" multiple=\"1\"  aria-invalid='false' aria-required=\"false\"><\/label><\/div><\/div><div class='ff-el-group ff-text-left ff_submit_btn_wrapper'><button type=\"submit\" class=\"ff-btn ff-btn-submit ff-btn-md ff_btn_style wpf_has_custom_css\"  aria-label=\"Hantar Borang\">Hantar Borang<\/button><\/div><\/fieldset><input type=\"hidden\" name=\"trp-form-language\" value=\"ms\"\/><\/form><div id='fluentform_3_errors' class='ff-errors-in-stack ff_form_instance_3_1 ff-form-loading_errors ff_form_instance_3_1_errors'><\/div><\/div>            <script type=\"text\/javascript\">\n                window.fluent_form_ff_form_instance_3_1 = {\"id\":\"3\",\"ajaxUrl\":\"https:\\\/\\\/www.leierwocasting.com\\\/wp-admin\\\/admin-ajax.php\",\"settings\":{\"layout\":{\"labelPlacement\":\"top\",\"asteriskPlacement\":\"asterisk-right\",\"helpMessagePlacement\":\"with_label\",\"errorMessagePlacement\":\"inline\",\"cssClassName\":\"\"},\"restrictions\":{\"denyEmptySubmission\":{\"enabled\":false}}},\"form_instance\":\"ff_form_instance_3_1\",\"form_id_selector\":\"fluentform_3\",\"rules\":{\"input_text_3\":{\"required\":{\"value\":true,\"message\":\"This field is required\",\"global_message\":\"This field is required\",\"global\":true}},\"email\":{\"required\":{\"value\":true,\"message\":\"This field is required\",\"global_message\":\"This field is required\",\"global\":true},\"email\":{\"value\":true,\"message\":\"This field must contain a valid email\",\"global_message\":\"This field must contain a valid email\",\"global\":true}},\"phone\":{\"required\":{\"value\":true,\"global\":true,\"message\":\"This field is required\",\"global_message\":\"This field is required\"},\"valid_phone_number\":{\"value\":true,\"global\":true,\"message\":\"Phone number is not valid\",\"global_message\":\"Phone number is not valid\"}},\"input_text\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global_message\":\"This field is required\",\"global\":true}},\"description\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global_message\":\"This field is required\",\"global\":true}},\"file-upload\":{\"required\":{\"value\":false,\"message\":\"This field is required\",\"global_message\":\"This field is required\",\"global\":true},\"max_file_size\":{\"value\":10485760,\"_valueFrom\":\"MB\",\"message\":\"Validation fails for maximum file size\",\"global_message\":\"Validation fails for maximum file size\",\"global\":true},\"max_file_count\":{\"value\":\"3\",\"message\":\"Validation fails for maximum file count\",\"global_message\":\"Validation fails for maximum file count\",\"global\":true},\"allowed_file_types\":{\"value\":[],\"message\":\"Invalid file type\",\"global_message\":\"Invalid file type\",\"global\":true}}},\"debounce_time\":300,\"file_upload_settings\":[]};\n                            <\/script>","protected":false},"excerpt":{"rendered":"<p>For buyers reviewing duplex stainless steel, a useful specification connects the service, the approved drawing and the delivered component. This guide examines the purchasing question \u201cQualifying a New Casting Supplier\u201d. Use it to organize the supplier discussion before approving material, tooling or production. Key purchasing decisions for duplex stainless steel Duplex stainless steel combines ferritic [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":191,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_gspb_post_css":"","footnotes":"","rank_math_title":"Duplex Stainless Steel: Qualifying a New Casting Supplier","rank_math_description":"Review duplex stainless steel: material, drawing, machining and inspection questions for custom components. Prepare a clearer RFQ with Leierwo.","rank_math_canonical_url":"https:\/\/www.leierwocasting.com\/duplex-stainless-steel-qualifying-a-new-casting-supplier\/","rank_math_focus_keyword":"duplex stainless steel"},"categories":[32],"tags":[],"class_list":["post-3894","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"_links":{"self":[{"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/posts\/3894","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/comments?post=3894"}],"version-history":[{"count":1,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/posts\/3894\/revisions"}],"predecessor-version":[{"id":3896,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/posts\/3894\/revisions\/3896"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/media\/191"}],"wp:attachment":[{"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/media?parent=3894"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/categories?post=3894"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.leierwocasting.com\/ms\/wp-json\/wp\/v2\/tags?post=3894"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}