{"id":860,"date":"2021-12-02T11:13:49","date_gmt":"2021-12-02T10:13:49","guid":{"rendered":"https:\/\/wolfram.laborumgebung.de\/materials\/wolfram-und-wolframlegierungen\/"},"modified":"2025-04-23T17:48:03","modified_gmt":"2025-04-23T15:48:03","slug":"tungsten-and-tungsten-alloys","status":"publish","type":"page","link":"https:\/\/wolfram.laborumgebung.de\/en\/materials\/tungsten-and-tungsten-alloys\/","title":{"rendered":"Tungsten and Tungsten Alloys"},"content":{"rendered":"\n    <section class=\"img-text-combi-produkt header  \" style=\"background-image: linear-gradient(rgba(0,0,0,0)), url('https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/06\/wolfram-industrie-werkstoffe-molybdaen-molybdaenlegierungen.jpg'); position: relative;\">\n\t\t<article>\n\t\t        \n\t\t\t <div class=\"rhombus bg-green\">\n\t\t\t\t<div class=\"inner-rhombus\">\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"rhombus-hero\">\t\n\t\t\t\t<div class=\"hero anim anim-left\">\n\t\t\t\t\t<h1>Tungsten &amp; tungsten alloys<br \/>\r\nMaterials with the finest properties<\/h1>\n\t\t\t\t\t<p>However high the hurdle, our refined tungsten materials are up to the challenge.<\/p>\n\t\t    \t<\/div>\t\t\t\n        \t<\/div>\n\t\t\n\t\t\t\t<\/article>\n    <\/section>\n\n\n\n<div class=\"breadcrumbs align wp-block-bcn-breadcrumb-trail has-text-color has-background\" vocab=\"https:\/\/schema.org\/\" typeof=\"BreadcrumbList\">\n\t<span><\/span>\n\t<span property=\"itemListElement\" typeof=\"ListItem\"><a property=\"item\" typeof=\"WebPage\" title=\"Go to Service- und Qualit\u00e4tsmarktf\u00fchrer f\u00fcr Wolfram - More than just Tungsten.\" href=\"https:\/\/wolfram.laborumgebung.de\/en\/\" class=\"home\" aria-current=\"page\"><span property=\"name\">Service- und Qualit\u00e4tsmarktf\u00fchrer f\u00fcr Wolfram &#8211; More than just Tungsten<\/span><\/a><meta property=\"position\" content=\"1\"><\/span><\/div>\n\n\n\n\n\n        <section class=\"text-info-col-2 intro \">\n\t\t\t<article>\t\t\t\t\n\t\t\t\t\t  \t\t<div class=\"col-8 fullwidth\">\n\t\t\t\t\t<div class=\"produkt-text\">\n\t\t\t\t\t\t<h2>Tungsten \u2013 the heavy metal with head-turning properties<\/h2>\n<p>Tungsten is a metal of extremely high thermal resistance and density. It has:<\/p>\n<ul>\n<li>The highest melting point of all metals,<\/li>\n<li>The greatest mechanical strength,<\/li>\n<li>Exceptional rigidity and<\/li>\n<li>The lowest coefficient of thermal expansion.<\/li>\n<\/ul>\n<p>Temperatures similar to those on the surface of the sun (approx. 5,900 \u00b0C) are required to boil tungsten. With a density of 19.28 g\/cm\u00b3, tungsten is also among the heaviest metals which explains why it is for specific mass balancing among other things. Tungsten takes eighth place in the electrical conductivity ranking. This means it has about 31% of the electrical conductivity of copper.<\/p>\n<p>Tungsten is also a special metal in terms of its chemistry. It is extraordinarily resistant to air exposure at room temperature. Only at high temperatures does it gradually burn, forming tungsten (VI) trioxide \u201c(WO3)\u201d. It is impervious to most acids and bases. Mineral acids, hydrofluoric acid and even nitrohydrochloric acid (aqua regia) only attack the metal slowly. It does however dissolve quickly in a mixture of nitric and hydrofluoric acid.<\/p>\n                    <\/div>\t\t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/article>\n\t\t<\/section>\n\n\n\n\n\n        <section class=\"text-info-col-2 intro \">\n\t\t\t<article>\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"col-8 fullwidth anchorlist green\">\n\t\t\t\t\t    \t\t\t\t<ol>\n    \t\t\t\t\t\t\t\t\t<li>\n            \t\t\t<a href=\"#abschnitt1\">Headline<\/a><br>\n\t\t\t\t\t\t<span>Subline<\/span>\n        \t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t<li>\n            \t\t\t<a href=\"#abschnitt2\">Headline<\/a><br>\n\t\t\t\t\t\t<span>Subline<\/span>\n        \t\t\t<\/li>\n\t\t\t\t\t\t\t\t\t\t<\/ol>\n\t\t\t\t\t\t\t\t\t<\/div>\t\t\t\t\n\n\t\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/article>\n\t\t<\/section>\n\n\n     <section class=\"img-info-col-2 bg-grey \">\n\t\t<article>\n\t\t\t\t\t\t<div class=\"col-2\">\n\t\t\t\t\t\t\t\t\t<h2>1. Wolfram und seine Legierungen: <br \/>\r\n\u00dcberlegene Eigenschaften treffen auf komplexe Anforderungen \t<\/h2>\n\t\t\t\t\t            <div class=\"img\">\n                                            <img decoding=\"async\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2023\/07\/Wolfram-Industrie_Werkstoffe_Wolframlegierungen-1.jpg\" alt=\"Wolf\" \/>\n                                                    \t\t\t\t\t\n\t\t\t\t<\/div>\t\t\t\t\t\n            <\/div>\n\t\t\t<div class=\"col-2\">\n\t\t\t\t<div class=\"info\">\n\t\t\t\t\t<h3>Was ist Wolfram?<\/h3>\n<p>Wolfram (Englisch: Tungsten) ist ein \u00e4u\u00dferst widerstandsf\u00e4higes Schwermetall, das sich durch seine au\u00dfergew\u00f6hnliche H\u00e4rte, hohe Dichte und den h\u00f6chsten Schmelzpunkt aller Metalle auszeichnet. Diese Eigenschaften machen es zu einem der gefragtesten und best\u00e4ndigsten Werkstoffe in der modernen Industrie. Das graugl\u00e4nzende Metall gilt in Bereichen als unverzichtbar, in denen Bedingungen herrschen, die nach hitzebest\u00e4ndigem und verschlei\u00dffestem Material verlangen.<\/p>\n<p>Wolfram wird haupts\u00e4chlich aus Wolframerzen gewonnen. Zu den wichtigsten geh\u00f6ren Scheelit (Calcium-Wolframat) und Wolframit (Eisen-Mangan-Wolframat). Die Erze enthalten Wolfram in geringer Konzentration, weshalb sie in aufwendigen Prozessen chemisch und mechanisch aufbereitet werden, um das reine Metall zu extrahieren.<\/p>\n<p>Die Bedeutung von Wolfram und Wolframlegierungen f\u00fcr verschiedene Industrien<\/p>\n<p>Wolfram und seine Legierungen kommen in spezialisierten Branchen zum Einsatz, die sehr hohe Anforderungen an Materialeigenschaften stellen. In der Schwei\u00dftechnik garantieren WIG-Elektroden stabile Schwei\u00dfn\u00e4hte bei hochreinen Verbindungen wie Titan oder Aluminium-Legierungen. Unsere Produkte WS2,\u00a0 INOSTAR\u00ae oder ALUSTAR\u00ae sind mit ihrer Hitze- und Verschlei\u00dfbest\u00e4ndigkeit in der Luft- und Raumfahrt sowie der Medizintechnik unverzichtbar. Aufgrund ihrer Langlebigkeit und Belastbarkeit bieten sie sichere L\u00f6sungen f\u00fcr Hochtemperaturprozesse.<\/p>\n<p>Auch in der Elektronik, dem Werkzeugbau und der Pharmaindustrie kommen spezialisierte Produkte wie TUNGSTIT\u00ae und TRIAMET\u00ae zum Einsatz. Anpassbare Leitf\u00e4higkeit und Dichte sind in streng regulierten Produktionsumgebungen wichtig, wie sie bei der Sterilisation und der Herstellung von pharmazeutischen Ger\u00e4ten gefordert werden.<\/p>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n        <\/article>\n    <\/section>\n\n\n\n\n        <section class=\"text-info-col-2 intro \">\n\t\t\t<article>\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"col-5 headlineaside\">\n\t\t\t\t\t<h2>\n\t\t\t\t\t\tTungsten \u2013 physical properties \t\t\t\t\t<\/h2>                   \t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t  \t\t<div class=\"col-7\">\n\t\t\t\t\t<div class=\"produkt-text\">\n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"850\" height=\"474\" class=\"alignnone size-full wp-image-387\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017.png\" alt=\"Wolframlegierungen\" srcset=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017.png 850w, https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017-300x167.png 300w, https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017-768x428.png 768w\" sizes=\"auto, (max-width: 850px) 100vw, 850px\" \/>\n                    <\/div>\t\t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/article>\n\t\t<\/section>\n\n\n\n<a class=\"anchor\" name=\"abschnitt1\"><\/a>\n\n\n\n\n\n        <section class=\"text-info-col-2 intro \">\n\t\t\t<article>\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"col-5 headlineaside\">\n\t\t\t\t\t<h2>\n\t\t\t\t\t\tTungsten \u2013 chemical properties\t\t\t\t\t<\/h2>                   \t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t  \t\t<div class=\"col-7\">\n\t\t\t\t\t<div class=\"produkt-text\">\n\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"840\" height=\"534\" class=\"alignnone size-full wp-image-386\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab.png\" alt=\"Wolframlegierungen\" srcset=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab.png 840w, https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab-300x191.png 300w, https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab-768x488.png 768w\" sizes=\"auto, (max-width: 840px) 100vw, 840px\" \/>\n                    <\/div>\t\t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/article>\n\t\t<\/section>\n\n\n\n<a class=\"anchor\" name=\"abschnitt2\"><\/a>\n\n\n\n\n\n        <section class=\"text-info-col-2 intro \">\n\t\t\t<article>\t\t\t\t\n\t\t\t\t\t\t\t<div class=\"col-5 headlineaside\">\n\t\t\t\t\t<h2>\n\t\t\t\t\t\tTungsten \u2013 physical and mechanical properties\t\t\t\t\t<\/h2>                   \t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t  \t\t<div class=\"col-7\">\n\t\t\t\t\t<div class=\"produkt-text\">\n\t\t\t\t\t\t<p>Density: 18.0-19.25 g\/cm\u00b3 (depending on the degree of deformation)<\/p>\n<p>Strength: for a diameter of 1.0-1.99 mm &gt; 1,500-2,200 MPa<\/p>\n<p>for a diameter of 2.0-3.2 mm &gt;1,300-2,000 MPa<\/p>\n<p>Expansion: &lt;6%<\/p>\n<p>Recrystallisation properties:<\/p>\n<ul>\n<li>Start of recrystallisation: at around 1,150\u00b0C<\/li>\n<li>Full recrystallisation: at around 1,350\u00b0C within 1 hour<\/li>\n<\/ul>\n<p>Specific electric resistance:<\/p>\n<ul>\n<li>300 K 5.65 \u00b5\u03a9cm<\/li>\n<li>500 K 10.65 \u00b5\u03a9cm<\/li>\n<li>1000 K 24.93 \u00b5\u03a9cm<\/li>\n<li>1500 K 40.36 \u00b5\u03a9cm<\/li>\n<li>2000 K 56.67 \u00b5\u03a9cm<\/li>\n<li>2500 K 73.91 \u00b5\u03a9cm<\/li>\n<li>3000 K 92.04 \u00b5\u03a9cm<\/li>\n<li>3500 K 111.10 \u00b5\u03a9cm<\/li>\n<\/ul>\n<p>Thermal conductivity at 293\u00b0K \/ 174 W\/m-K<\/p>\n<p>Temperature coefficient: 273\u2013373 K 4.5 \u00b7 10-6 K-1<\/p>\n<p>Surface: ground, drawn (black\/cleaned), hammered, turned, milled and eroded available<\/p>\n<p>Heat treatment: May be annealed or unannealed<\/p>\n                    <\/div>\t\t\t\t\t\n\t\t\t\t<\/div>\t\n\t\t\t\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t<\/article>\n\t\t<\/section>\n\n\n\n    <section class=\"zitat withsvg\">\n\t\t<article>\n\t\t\t\t\t\t\t<div class=\"flex-item centered\">\n\t\t\t\t  <div class=\"col-3\">\n\t\t\t\t\t<svg class=\"anim anim-left\" version=\"1.1\" viewBox=\"0 0 603.89 221.67\" xml:space=\"preserve\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n\t\t\t\t\t  <g id=\"start_raute\" transform=\"translate(-67.887 -88.673)\">\n\t\t\t\t\t\t<path d=\"m405.9 307.4-332.3 0.8 250.7-217.4 341.6 0.6z\"><\/path>\n\t\t\t\t\t  <\/g>\n\t\t\t\t\t  <\/svg>\n\t\t\t\t  <\/div>\n\t\t\t\t   <div class=\"col-2\">\n\t\t\t\t\t<div class=\"zitat-inner anim anim-left\">\n\t\t\t\t\t  &#8220;Selecting the right material is often critical to the success of a project.&#8221;\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t  <\/div>\n\t\t\t\t<\/div>\n\t\t\t        <\/article>\n    <\/section>\n\n\n        <section class=\"img-produkte-col-3\">\n\t\t\t<article class=\"produkt-kategorie\">\n\t\t\t\t<h2>More Materials<\/h2>\n\t\t\t<\/article>            \n            \n                    <article>\n                            <div class=\"col-3\">\n                    <div class=\"wrapper\">\n\n                        \n                            \n                            <img decoding=\"async\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2023\/07\/Wolfram-Industrie_Werkstoffe_Molybdaenlegierungen.jpg\" \/>\n                            \n                            <div class=\"rhombus bg-green\"><\/div>\n                            <div class=\"inner-rhombus produkt-headline\">\n                                <h2>Molybdenum and Molybdenum Alloys<\/h2>\n                            <\/div>                                                        \n                           <a href=\"\/en\/materials\/molybdaen-und-molybdaen-alloys\/\"><\/a>         \n\n                    <\/div>\n                <\/div>    \n                            <div class=\"col-3\">\n                    <div class=\"wrapper\">\n\n                        \n                            \n                            <img decoding=\"async\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/06\/wolfram-industriewerkstoffe_wolfram_granulat_dotimet_3.jpg\" \/>\n                            \n                            <div class=\"rhombus bg-green\"><\/div>\n                            <div class=\"inner-rhombus produkt-headline\">\n                                <h2>Tungsten Granulate (DOTIMET\u00ae)<\/h2>\n                            <\/div>                                                        \n                           <a href=\"\/en\/materials\/dotimet-tungsten-granulate\/\"><\/a>         \n\n                    <\/div>\n                <\/div>    \n                            <div class=\"col-3\">\n                    <div class=\"wrapper\">\n\n                        \n                            \n                            <img decoding=\"async\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/06\/wolfram-industrie_werkstoffe_Verbundwerkstoffe_Tungstit.jpg\" \/>\n                            \n                            <div class=\"rhombus bg-green\"><\/div>\n                            <div class=\"inner-rhombus produkt-headline\">\n                                <h2>Compounds (TUNGSTIT\u00ae)<\/h2>\n                            <\/div>                                                        \n                           <a href=\"https:\/\/wolfram.laborumgebung.de\/en\/materials\/tungstit-compounds\/\"><\/a>         \n\n                    <\/div>\n                <\/div>    \n                            <div class=\"col-3\">\n                    <div class=\"wrapper\">\n\n                        \n                            \n                            <img decoding=\"async\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/06\/wolfram-industrie_werkstoffe_werkstoffverbunde_5.jpg\" \/>\n                            \n                            <div class=\"rhombus bg-green\"><\/div>\n                            <div class=\"inner-rhombus produkt-headline\">\n                                <h2>Material composite<\/h2>\n                            <\/div>                                                        \n                           <a href=\"https:\/\/wolfram.laborumgebung.de\/en\/materials\/composite-materials\/\"><\/a>         \n\n                    <\/div>\n                <\/div>    \n                            <div class=\"col-3\">\n                    <div class=\"wrapper\">\n\n                        \n                            \n                            <img decoding=\"async\" src=\"https:\/\/wolfram.laborumgebung.de\/wp-content\/uploads\/2022\/06\/wolfram-industriewerkstoffe_triamet.jpg\" \/>\n                            \n                            <div class=\"rhombus bg-green\"><\/div>\n                            <div class=\"inner-rhombus produkt-headline\">\n                                <h2>TRIAMET\u00ae<\/h2>\n                            <\/div>                                                        \n                           <a href=\"\/en\/materials\/triamet-heavy-metal\/\"><\/a>         \n\n                    <\/div>\n                <\/div>    \n                        <\/article>\n                    \n\t\t\t                                   \t                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