{"id":1677,"date":"2021-07-07T12:27:12","date_gmt":"2021-07-07T12:27:12","guid":{"rendered":"https:\/\/comercialcobra.com\/materials\/"},"modified":"2021-10-20T16:31:25","modified_gmt":"2021-10-20T16:31:25","slug":"materials","status":"publish","type":"page","link":"https:\/\/comercialcobra.com\/en\/materials\/","title":{"rendered":"Materials"},"content":{"rendered":"\t\t
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MATERIALS<\/h1>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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FIRST QUALITY<\/h2>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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At Comercial Cobra we have the technical capacity necessary to satisfy the demands of our clients.<\/div>
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Our products are made with top quality materials: Silicate (SiO2), Alumina (AL2O3) and Aluminum Nitride (AIN), which extends the life of the products.<\/div>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\t\t\t\t\t\t\t\"\"\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Comparison of material properties<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Values \u200b\u200bobtained in the laboratory. In normal use, there may be slight variations.<\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Properties<\/th>Measurement units<\/th>Porcelain<\/th>Steatite<\/th>Steatite<\/th>Cordierite<\/th>Cordierite<\/th>Mullite<\/th>Alumina<\/th><\/tr><\/thead>
Equivalent to DIN 40685 – CEI 672 – EN 60672<\/td>\u00a0<\/td>C-112<\/td>C-220<\/td>C-221<\/td>C-410<\/td>C-511<\/td>C-610<\/td>C-795<\/td><\/tr>
Chemical composition<\/td><\/tr>
SiO2<\/span><\/td>%<\/td>70<\/td>60-65<\/td>60<\/td>60<\/td>50<\/td>40<\/td>–<\/td><\/tr>
AI2<\/span>O3<\/span><\/td>%<\/td>20<\/td>15-17<\/td>–<\/td>30<\/td>35<\/td>50<\/td>96<\/td><\/tr>
MgO<\/td>%<\/td>–<\/td>18-20<\/td>25<\/td>3-5<\/td>10<\/td>–<\/td>–<\/td><\/tr>
Physical Properties<\/td><\/tr>
Colour<\/td>\u00a0<\/td>White<\/td>White<\/td>White<\/td>White<\/td>Brown<\/td>White<\/td>White<\/td><\/tr>
Water Absorption<\/td>%<\/td>Less than 1<\/td>0’5<\/td>0<\/td>0<\/td>15-20<\/td>0<\/td>0<\/td><\/tr>
Flexural strength<\/td>kg\/cm2<\/sup><\/td>\u00a0800<\/td>\u00a01200<\/td>\u00a01400<\/td>800<\/td>300<\/td>1200<\/td>3000<\/td><\/tr>
Compressive Strength<\/td>kg\/cm2<\/span><\/td>\u00a02500<\/td>\u00a04000<\/td>\u00a05000<\/td>2500<\/td>2000<\/td>3500<\/td>25000<\/td><\/tr>
Elasticity<\/td>kg\/cm2\u00a0<\/sup>106<\/sup><\/td>0.7<\/td>\u00a00.8<\/td>1.0<\/td>0.75<\/td>–<\/td>1.0<\/td>–<\/td><\/tr>
Hardness<\/td>Moh’s<\/td>6-6.5<\/td>6-7<\/td>6-7<\/td>\u00a06-6.5<\/td>–<\/td>7<\/td>12<\/td><\/tr>
Thermal Properties<\/td><\/tr>
Thermal expansion coefficient 30-600\u00baC<\/td>10-6<\/sup>\/\u00baC<\/td>6-7<\/td>6-7<\/td>6-7<\/td>6-7<\/td>4-5<\/td>5-6<\/td>8<\/td><\/tr>
Thermal shock resistance<\/td>\u00a0\u00baC<\/td>200<\/td>250<\/td>300<\/td>400<\/td>750<\/td>300<\/td>220<\/td><\/tr>
Thermal conductivity<\/td>\u00a0W\/M \u00baK<\/td>1.4-2.5<\/td>\u00a02-3<\/td>\u00a02-3<\/td>\u00a01.2-2.5<\/td>1.3-1.8<\/td>2-6<\/td>25<\/td><\/tr>
Maximum operating temperature<\/td>\u00baC<\/td>600<\/td>1000<\/td>1050<\/td>600<\/td>1000<\/td>1000<\/td>1450<\/td><\/tr>
Electrical Properties (20\u00baC)<\/td><\/tr>
Dielectric Strength<\/td>KV\/mm<\/td>8<\/td>10<\/td>20<\/td>10<\/td>–<\/td>10<\/td>18<\/td><\/tr>
Dielectric constant<\/td>\u00a0<\/td>5.0<\/td>5.5<\/td>6.5<\/td>6.0<\/td>–<\/td>7.0<\/td>9.5<\/td><\/tr>
Resistivity<\/td>Ohm-cm<\/td>10<\/span>11<\/span><\/td>10<\/span>11<\/span><\/td>10<\/span>11<\/span><\/td>10<\/span>10<\/span><\/td>–<\/td>10<\/span>11<\/span><\/td>10<\/span>12<\/span>–10<\/span>13<\/span><\/td><\/tr><\/tbody><\/table>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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GET IN TOUCH WITH US<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Grassot, 65<\/p>

08025 Barcelona (Espa\u00f1a)<\/p>

+34 931 831 535<\/a><\/p>

cobra@comercialcobra.com<\/a><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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\n\t\t\t\n\t\t\t\t\t\t\n\t\t\t\t\t\tCONTACT US<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t
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\n\t\t\t\t\t\"\"<\/a>COMERCIAL COBRA<\/strong><\/em>\n
\nGrassot, 65 08025 Barcelona (Espa\u00f1a)<\/a>\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

MATERIALS FIRST QUALITY At Comercial Cobra we have the technical capacity necessary to satisfy the demands of our clients.\u00a0Our products are made with top quality materials: Silicate (SiO2), Alumina (AL2O3) and Aluminum Nitride (AIN), which extends the life of the products. Comparison of material properties Values \u200b\u200bobtained in the laboratory. In normal use, there may … Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"elementor_header_footer","meta":[],"acf":[],"_links":{"self":[{"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/pages\/1677"}],"collection":[{"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/comments?post=1677"}],"version-history":[{"count":0,"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/pages\/1677\/revisions"}],"wp:attachment":[{"href":"https:\/\/comercialcobra.com\/en\/wp-json\/wp\/v2\/media?parent=1677"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}