{"id":5433,"date":"2026-08-14T08:53:01","date_gmt":"2026-08-14T08:53:01","guid":{"rendered":"https:\/\/beiyutitanium.com\/titanium-bar-heat-and-batch-acceptance\/"},"modified":"2026-08-15T01:47:35","modified_gmt":"2026-08-15T01:47:35","slug":"titanium-bar-heat-and-batch-acceptance","status":"publish","type":"post","link":"https:\/\/beiyutitanium.com\/it\/titanium-bar-heat-and-batch-acceptance\/","title":{"rendered":"Per colata o per lotto: livello di accettazione delle barre di titanio"},"content":{"rendered":"<figure class=\"ti-hero-image\" style=\"margin:0 0 1.2em;\"><img fetchpriority=\"high\" decoding=\"async\" src=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-heat-lot-test-data-redacted.webp\" alt=\"Representative Beiyu test data summary for one heat split across four lots, with the heat number withheld\" width=\"1200\" height=\"800\" loading=\"eager\" style=\"width:100%;height:auto;border-radius:8px;\" \/><\/figure>\n<h2>Una colata pu\u00f2 arrivare suddivisa in pi\u00f9 lotti<\/h2>\n<p>Una colata corrisponde alla fusione. Un lotto comprende il materiale lavorato insieme successivamente. Una singola colata pu\u00f2 essere suddivisa in lotti ricotti, lavorati o finiti separatamente, e i risultati meccanici sono riportati per ciascuno di essi. Decidere il livello al quale effettuare l'accettazione \u00e8 una decisione da prendere nell'ordine, non da rimandare all'arrivo del certificato.<\/p>\n<table>\n<thead>\n<tr>\n<th>Livello<\/th>\n<th>Che cosa identifica<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Colata<\/td>\n<td>La fusione da cui proviene il materiale<\/td>\n<\/tr>\n<tr>\n<td>Lotto<\/td>\n<td>Il materiale lavorato insieme dopo la fusione<\/td>\n<\/tr>\n<tr>\n<td>Pezzo<\/td>\n<td>La singola barra come marcata e consegnata<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Quali propriet\u00e0 appartengono a ciascun livello<\/h2>\n<p>\u00c8 questa distinzione a determinare quanti rapporti di prova \u00e8 opportuno attendersi.<\/p>\n<table>\n<thead>\n<tr>\n<th>Propriet\u00e0<\/th>\n<th>Livello di appartenenza<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Composizione chimica<\/td>\n<td>Una propriet\u00e0 della fusione, riportata per colata<\/td>\n<\/tr>\n<tr>\n<td>Propriet\u00e0 meccaniche<\/td>\n<td>Influenzata dalla lavorazione, riportata per lotto<\/td>\n<\/tr>\n<tr>\n<td>Risultati dimensionali e superficiali<\/td>\n<td>Per pezzo quando il controllo \u00e8 al 100 per cento<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Perch\u00e9 la stessa colata pu\u00f2 presentare risultati meccanici diversi<\/h2>\n<p>I lotti di una stessa colata condividono la composizione chimica, ma non necessariamente la stessa storia di lavorazione. I valori riportati rispettano i minimi della specifica e non ci si aspetta che siano identici tra i lotti.<\/p>\n<table>\n<thead>\n<tr>\n<th>Che cosa varia tra i lotti di una stessa colata<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Il ciclo di lavorazione effettivamente seguito dal lotto<\/td>\n<\/tr>\n<tr>\n<td>Lo stato di fornitura nel quale \u00e8 stato finito<\/td>\n<\/tr>\n<tr>\n<td>La dimensione della sezione al momento della prova<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>I campi da indicare quando si richiedono risultati per lotto<\/h2>\n<p><a href=\"https:\/\/beiyutitanium.com\/it\/titanium-bar-certificate-package-layers\/\">Quali campi compaiono sul certificato<\/a> \u00e8 stabilito dalla specifica ordinata e da quanto richiesto nell'ordine. Questi sono quelli <a href=\"https:\/\/beiyutitanium.com\/it\/medical-titanium-bar-rfq-checklist\/\">che gli acquirenti che operano secondo una specifica per impianti o applicazioni in pressione indicano normalmente<\/a>.<\/p>\n<table>\n<thead>\n<tr>\n<th>Campo da indicare nell'ordine<\/th>\n<th>Che cosa registra<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Resistenza a trazione<\/td>\n<td>Valore misurato rispetto al minimo della specifica<\/td>\n<\/tr>\n<tr>\n<td>Carico di snervamento<\/td>\n<td>Valore misurato rispetto al minimo della specifica<\/td>\n<\/tr>\n<tr>\n<td>Allungamento<\/td>\n<td>Valore misurato rispetto al minimo della specifica<\/td>\n<\/tr>\n<tr>\n<td>Strizione<\/td>\n<td>Valore misurato ove richiesto dalla specifica<\/td>\n<\/tr>\n<tr>\n<td>Contenuto di idrogeno<\/td>\n<td>Valore misurato rispetto al massimo della specifica<\/td>\n<\/tr>\n<tr>\n<td>Microstruttura<\/td>\n<td>Valutata ove richiesto dall'ordine<\/td>\n<\/tr>\n<tr>\n<td>Risultato del controllo a ultrasuoni<\/td>\n<td>Risultato dell'esame ordinato<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Come indicare il livello di accettazione nell'ordine<\/h2>\n<p>Un ordine che indica &#8220;certificato di prova richiesto&#8221; non specifica a quale livello si valuta l'accettazione. Queste sono le tre formulazioni abituali.<\/p>\n<table>\n<thead>\n<tr>\n<th>L'ordine indica<\/th>\n<th>A che cosa vincola lo stabilimento produttore<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Per colata<\/td>\n<td>Una serie di risultati che copre tutto il materiale proveniente da quella fusione<\/td>\n<\/tr>\n<tr>\n<td>Per lotto<\/td>\n<td>Risultati per ciascun lotto lavorato all'interno della colata<\/td>\n<\/tr>\n<tr>\n<td>Per colata e per lotto<\/td>\n<td>Composizione chimica a livello di colata, risultati meccanici a livello di lotto<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Righe da incollare nell'ordine d'acquisto<\/h2>\n<pre style=\"white-space:pre-wrap;background:#f4f6f7;border:1px solid #dfe4e8;border-radius:4px;padding:14px 16px;font-size:13.5px;line-height:1.7;overflow-x:auto\">Livello di rendicontazione della composizione chimica: ______ (indicare per colata e se \u00e8 richiesta anche l'analisi del lingotto)\nLivello di rendicontazione meccanica: ______ (indicare per colata o per lotto)\nCampi da riportare: ______ (resistenza a trazione, carico di snervamento, allungamento, strizione, idrogeno, microstruttura)\nRisultati degli esami da riportare: ______ (indicare ciascun esame con la relativa norma e classe di accettazione)\nTracciabilit\u00e0: identificazione della colata e del lotto da riportare sul certificato e sulla marcatura del materiale\nLotti misti: ______ (indicare se \u00e8 possibile spedire materiale di pi\u00f9 colate a fronte di una singola riga d'ordine)<\/pre>\n<p>L'ultima riga \u00e8 quella pi\u00f9 spesso omessa. Indicare se una singola riga d'ordine pu\u00f2 essere evasa con materiale di pi\u00f9 colate, perch\u00e9 questo determina <a href=\"https:\/\/beiyutitanium.com\/it\/titanium-bar-marking-separation-and-packing\/\">come devono essere organizzati i certificati e la marcatura<\/a> prima della spedizione del materiale.<\/p>\n<div class=\"ti-rfq-box\">\n<h2>Dettagli delle specifiche con fonti<\/h2>\n<p>La norma di prodotto stabilisce cosa campionare e riportare, innanzitutto a livello di colata. <a href=\"https:\/\/store.astm.org\/standards\/b348\" target=\"_blank\" rel=\"noopener\">ASTM B348<\/a> richiede, come minimo, che l'analisi di campioni prelevati dalla testa e dal fondo del lingotto venga eseguita e riportata per tutti gli elementi elencati per il grado (ASTM B348, requisiti chimici, note alle tabelle). Richiede inoltre che l'idrogeno venga riportato sul prodotto finito, mentre non \u00e8 necessario riportarlo per il lingotto, e precisa che le tolleranze dell'analisi di prodotto non ampliano i requisiti dell'analisi di colata, ma coprono soltanto le variazioni tra laboratori (ASTM B348, analisi di prodotto).<\/p>\n<table data-c195=\"1\">\n<thead>\n<tr>\n<th>Livello<\/th>\n<th>Cosa stabilisce ASTM B348 a tale livello<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Lingotto, per colata<\/td>\n<td>Analisi della testa e del fondo eseguita e riportata per gli elementi elencati<\/td>\n<\/tr>\n<tr>\n<td>Prodotto finito<\/td>\n<td>Idrogeno riportato sul prodotto finito<\/td>\n<\/tr>\n<tr>\n<td>Analisi di prodotto<\/td>\n<td>Le tolleranze coprono le variazioni tra laboratori, non un limite di colata pi\u00f9 ampio<\/td>\n<\/tr>\n<tr>\n<td>Livello di accettazione<\/td>\n<td>Indicato dall'acquirente nell'ordine<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>L'applicazione pratica \u00e8 visibile nella documentazione di produzione di Beiyu. In una colata rappresentativa di Ti-6Al-4V, suddivisa in quattro lotti lavorati, la resistenza a trazione riportata variava da 961 a 1082 MPa e la strizione da 42 a 55 per cento, con ogni lotto al di sopra dei minimi della specifica per impianti di 860 MPa a trazione e 795 MPa di snervamento rispetto ai quali \u00e8 stato valutato l'ordine. Sono risultati di una colata e dei suoi lotti, non una specifica generale, e vengono riportati per lotto proprio perch\u00e9 i lotti di una stessa colata non devono necessariamente essere identici. La prova di trazione segue ASTM E8 a una velocit\u00e0 di deformazione di 0.003 a 0.007 inch per inch per minute fino al carico di snervamento specificato (ASTM B348, propriet\u00e0 meccaniche).<\/p>\n<h2>Inviare una richiesta di offerta tecnica<\/h2>\n<p>Per le richieste di offerta di barre di titanio, indicare se l'accettazione viene valutata per colata o per lotto e se una voce pu\u00f2 essere soddisfatta con pi\u00f9 colate, oltre al grado, alla norma, al diametro, allo stato, all'ambito dei controlli e alla documentazione di certificazione richiesta.<\/p>\n<p><a class=\"contact-popup-btn\" href=\"#contact-popup-btn\">Inviare i dettagli della richiesta di offerta<\/a><\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>One heat can arrive as several batches A heat is the melt. A batch is what was processed together afterwards. A single heat can be split across batches that were annealed, worked or finished separately, and the mechanical results are reported for each of them. Deciding which level you accept against is an order decision, [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":5485,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_templately_pack_id":"","_templately_imported_at":"","_templately_source":"","_templately_import_session_id":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[27,137],"tags":[],"class_list":["post-5433","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","category-technical-guides"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Per Heat or Per Batch: Titanium Bar Acceptance Level<\/title>\n<meta name=\"description\" content=\"Chemistry belongs to the melt, mechanical results are affected by processing. See which properties sit at which level and how to write the acceptance level on the order.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/beiyutitanium.com\/it\/titanium-bar-heat-and-batch-acceptance\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Per Heat or Per Batch: Titanium Bar Acceptance Level\" \/>\n<meta property=\"og:description\" content=\"Chemistry belongs to the melt, mechanical results are affected by processing. See which properties sit at which level and how to write the acceptance level on the order.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/beiyutitanium.com\/it\/titanium-bar-heat-and-batch-acceptance\/\" \/>\n<meta property=\"og:site_name\" content=\"Beiyu Titanium\" \/>\n<meta property=\"article:published_time\" content=\"2026-08-14T08:53:01+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-08-15T01:47:35+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/beiyutitanium.com\/wp-content\/uploads\/2026\/08\/titanium-heat-lot-test-data-redacted.webp\" \/>\n<meta name=\"author\" content=\"Penn Ma\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Penn Ma\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/\"},\"author\":{\"name\":\"Penn Ma\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/person\\\/3560db17cf08813edf34f012735b971b\"},\"headline\":\"Per Heat or Per Batch: Titanium Bar Acceptance Level\",\"datePublished\":\"2026-08-14T08:53:01+00:00\",\"dateModified\":\"2026-08-15T01:47:35+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/\"},\"wordCount\":762,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/titanium-heat-lot-test-data-redacted.webp\",\"articleSection\":[\"News\",\"Technical Guides\"],\"inLanguage\":\"it-IT\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/\",\"name\":\"Per Heat or Per Batch: Titanium Bar Acceptance Level\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/titanium-bar-heat-and-batch-acceptance\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/beiyutitanium.com\\\/wp-content\\\/uploads\\\/2026\\\/08\\\/titanium-heat-lot-test-data-redacted.webp\",\"datePublished\":\"2026-08-14T08:53:01+00:00\",\"dateModified\":\"2026-08-15T01:47:35+00:00\",\"description\":\"Chemistry belongs to the melt, mechanical results are affected by processing. 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Production runs through the Beiyu titanium mill in Baoji, Shaanxi. Orders are RFQ-based, with EN 10204 3.1 mill test certificates and heat-number traceability available on request.\",\"areaServed\":\"Worldwide\",\"knowsAbout\":[\"Titanium\",\"Titanium alloy\",\"Titanium bar\",\"Titanium sheet and plate\",\"Titanium tube and pipe\",\"Titanium forgings\",\"Titanium wire\",\"Titanium anode\"],\"address\":{\"@type\":\"PostalAddress\",\"streetAddress\":\"Baotai Road Industrial Park, High-tech Development Zone\",\"addressLocality\":\"Baoji\",\"addressRegion\":\"Shaanxi\",\"addressCountry\":\"CN\"},\"legalName\":\"Jiaxing Beiyu New Materials Technology Co., Ltd.\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/beiyutitanium.com\\\/#\\\/schema\\\/person\\\/3560db17cf08813edf34f012735b971b\",\"name\":\"Penn Ma\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"it-IT\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/0659bdefb633d0d8e567b06d2f8bffac2a369834e53e96c922a06fd8a96f3c72?s=96&d=mm&r=g\",\"caption\":\"Penn Ma\"},\"description\":\"Penn Ma is the person who answers the RFQs at Beiyu Titanium. Over 15 years in titanium export he has learned to review each specification line himself, checking grade, standard, dimensions, tolerance and certificate scope against mill capability before quoting, rather than routing enquiries through a sales desk. He came to titanium supply from the other side of the transaction. Before leading Beiyu's international business he worked at Koch (Koch-Glitsch) and was directly involved in delivering a SABIC petrochemical project in Fujian, China. That work was built on inspection and test plans, material certification and heat traceability, third party inspection coordination, and project documentation and dossier control. Those are the same four things a process industry or regulated buyer will hold a titanium supplier to, and having had to enforce them as a customer is why they are treated here as part of the supply rather than as paperwork produced afterwards. His day-to-day work spans the questions this site is written to answer: choosing between commercially pure and alloyed titanium grades for a corrosive service, reading a mill test certificate against the ordered standard, and matching a buyer's designation (ASTM grade, UNS, German Werkstoff number or French NF code) to the same metal across markets. Beiyu supplies titanium, nickel-alloy and refractory mill products across bar, rod, plate, tube, block, ring, coil, ingot, forgings and machined parts, with EN 10204 3.1 documentation and heat-number traceability.\",\"url\":\"https:\\\/\\\/beiyutitanium.com\\\/it\\\/author\\\/penn-ma\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Per colata o per lotto: livello di accettazione delle barre di titanio","description":"La composizione chimica appartiene alla colata, mentre i risultati meccanici risentono della lavorazione. 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La produzione avviene presso lo stabilimento produttore di titanio Beiyu a Baoji, Shaanxi. 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In oltre 15 anni nell'esportazione di titanio ha imparato a riesaminare personalmente ogni riga della specifica, verificando grado, norma, dimensioni, tolleranza e ambito del certificato rispetto alla capacit\u00e0 dello stabilimento produttore prima di formulare un'offerta, anzich\u00e9 inoltrare le richieste attraverso un ufficio vendite. \u00c8 arrivato alla fornitura di titanio dall'altra parte della transazione. Prima di guidare l'attivit\u00e0 internazionale di Beiyu ha lavorato presso Koch (Koch-Glitsch) ed \u00e8 stato direttamente coinvolto nella consegna di un progetto petrolchimico SABIC a Fujian, Cina. Tale lavoro si basava su piani di controllo e prova, certificazione dei materiali e tracciabilit\u00e0 tramite il numero di colata, coordinamento del collaudo di terza parte e controllo della documentazione e dei dossier di progetto. Sono le stesse quattro cose a cui un acquirente dell'industria di processo o regolamentato sottoporr\u00e0 un fornitore di titanio, e aver dovuto farle rispettare come cliente spiega perch\u00e9 qui siano trattate come parte della fornitura anzich\u00e9 come documentazione prodotta in seguito. Il suo lavoro quotidiano copre le questioni a cui questo sito intende rispondere: scegliere tra gradi di titanio commercialmente puro e legato per un servizio corrosivo, leggere un certificato del materiale rispetto alla norma ordinata e associare la designazione di un acquirente (grado ASTM, UNS, numero Werkstoff tedesco o codice NF francese) allo stesso metallo nei vari mercati. 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