{"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":"2023-08-07T15:54:16","modified_gmt":"2023-08-07T13:54:16","slug":"tungsten-and-tungsten-alloys","status":"publish","type":"page","link":"https:\/\/wolfram-industrie.de\/en\/materials\/tungsten-and-tungsten-alloys\/","title":{"rendered":"Tungsten and Tungsten Alloys"},"content":{"rendered":"\n \n\n    <section class=\"img-text-combi-produkt header\" style=\"background-image: url('https:\/\/wolfram-industrie.de\/wp-content\/uploads\/2022\/06\/wolfram-industrie-werkstoffe-molybdaen-molybdaenlegierungen.jpg');position: relative;\">\n        <article>\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<\/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-industrie.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-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-industrie.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017.png\" alt=\"Wolframlegierungen\" srcset=\"https:\/\/wolfram-industrie.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017.png 850w, https:\/\/wolfram-industrie.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-phe-wolfram-tabelle-04-2017-300x167.png 300w, https:\/\/wolfram-industrie.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\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-industrie.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab.png\" alt=\"Wolframlegierungen\" srcset=\"https:\/\/wolfram-industrie.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab.png 840w, https:\/\/wolfram-industrie.de\/wp-content\/uploads\/2022\/01\/wolfram-industrie-che-wolfram-tab-300x191.png 300w, https:\/\/wolfram-industrie.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\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-industrie.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-industrie.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-industrie.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-industrie.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-industrie.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-industrie.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-industrie.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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