{"id":505,"date":"2026-07-07T05:31:41","date_gmt":"2026-07-07T05:31:41","guid":{"rendered":"https:\/\/web.keywordindia.in\/mittal\/?page_id=505"},"modified":"2026-07-07T05:35:01","modified_gmt":"2026-07-07T05:35:01","slug":"mei-144","status":"publish","type":"page","link":"https:\/\/web.keywordindia.in\/mittal\/mei-144\/","title":{"rendered":"MEI 144"},"content":{"rendered":"\t\t
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Overview<\/h2>\t\t\t\t<\/div>\n\t\t\t\t
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MEI-144 (Cu-TBC) is tin and phosphorus co-doped copper (76% IACS) with improved softening resistance at elevated temperatures. Not susceptible to
hydrogen embrittlement. Ideal for semiconductor components, connectors and terminals requiring thermal stability.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t

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\n \n \n \n \n \n \n \n \n
CHEMICAL COMPOSITION (wt. %)<\/th>\n ALLOY DESIGNATIONS<\/th>\n COIL \/ SHEET SPECIFICATIONS<\/th>\n <\/tr>\n\n
Element<\/th>\n Composition (%)<\/th>\n\n Standard<\/th>\n Designation<\/th>\n\n Specification<\/th>\n Range<\/th>\n <\/tr>\n\n
Cu<\/strong><\/td>\n ≥99.500 (Min.)<\/td>\n\n IS<\/strong><\/td>\n IS 3331<\/td>\n\n Thickness (mm)<\/strong><\/td>\n 0.04 \u2013 3.0<\/td>\n <\/tr>\n\n
P<\/strong><\/td>\n 0.015 \u2013 0.045<\/td>\n\n JIS<\/strong><\/td>\n \u2014<\/td>\n\n Width (mm)<\/strong><\/td>\n 6.00 \u2013 406<\/td>\n <\/tr>\n\n
Sn<\/strong><\/td>\n 0.070 \u2013 0.200<\/td>\n\n ISO<\/strong><\/td>\n Cu TBC<\/td>\n\n Inner Dia. (mm)<\/strong><\/td>\n 100 \/ 150 \/ 200 \/ 300 \/ 400 \/ 500<\/td>\n <\/tr>\n\n
<\/td>\n\n ASTM<\/strong><\/td>\n C14410<\/td>\n\n Coil Wt. (kg\/mm)<\/strong><\/td>\n 1.0 \u2013 4.0<\/td>\n <\/tr>\n\n
BS<\/strong><\/td>\n \u2014<\/td>\n\n Sheet Length (m)<\/strong><\/td>\n 0.50 \u2013 4.00<\/td>\n <\/tr>\n <\/table>\n<\/div>\n\n\n\n
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\n MECHANICAL PROPERTIES \u2014 typical values at 20\u00b0C\n <\/th>\n <\/tr>\n\n
Temper<\/th>\n Code<\/th>\n HV<\/th>\n Tensile MPa<\/th>\n Yield MPa<\/th>\n Elongation % (min)<\/th>\n <\/tr>\n\n
Annealed<\/strong><\/td>\n O<\/td>\n 40\u201360<\/td>\n 200\u2013250<\/td>\n ≤100<\/td>\n 25<\/td>\n <\/tr>\n\n
1\/4 Hard<\/strong><\/td>\n HA<\/td>\n 60\u201380<\/td>\n 250\u2013300<\/td>\n ≤140<\/td>\n 20<\/td>\n <\/tr>\n\n
1\/2 Hard<\/strong><\/td>\n HB<\/td>\n 80\u2013100<\/td>\n 300\u2013360<\/td>\n ≥270<\/td>\n 10<\/td>\n <\/tr>\n\n
Hard<\/strong><\/td>\n HD<\/td>\n 105\u2013125<\/td>\n 360\u2013430<\/td>\n ≥310<\/td>\n 7<\/td>\n <\/tr>\n\n
Extra Hard<\/strong><\/td>\n EH<\/td>\n ≥125<\/td>\n ≥430<\/td>\n ≥410<\/td>\n 4<\/td>\n <\/tr>\n <\/table>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t
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\n PHYSICAL PROPERTIES \u2014 annealed temper at 20\u00b0C\n <\/th>\n <\/tr>\n\n
Density (g\/cm\u00b3)<\/th>\n Elec. Conductivity (% IACS)<\/th>\n Thermal Conductivity (W\/m\u00b7K)<\/th>\n Modulus of Elasticity (GPa)<\/th>\n Specific Heat (J\/kg\u00b7K)<\/th>\n <\/tr>\n\n
8.94<\/td>\n 76<\/td>\n 330<\/td>\n 120<\/td>\n 385<\/td>\n <\/tr>\n <\/table>\n<\/div>\n\n\n
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\n FABRICATION PROPERTIES\n <\/th>\n <\/tr>\n\n
Fabrication Property<\/th>\n Rating<\/th>\n Fabrication Property<\/th>\n Rating<\/th>\n <\/tr>\n\n
Capacity for Cold Working<\/strong><\/td>\n Excellent<\/td>\n\n Soft Soldering<\/strong><\/td>\n Excellent<\/td>\n <\/tr>\n\n
Machinability<\/strong><\/td>\n Less suitable<\/td>\n\n Resistance Welding<\/strong><\/td>\n Less suitable<\/td>\n <\/tr>\n\n
Electroplating<\/strong><\/td>\n Excellent<\/td>\n\n Gas Shielded Arc Welding<\/strong><\/td>\n Excellent<\/td>\n <\/tr>\n\n
Hot Dip Tinning<\/strong><\/td>\n Excellent<\/td>\n\n Laser Welding<\/strong><\/td>\n Good<\/td>\n <\/tr>\n <\/table>\n<\/div>\n\n\n
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\n CORROSION RESISTANCE\n <\/div>\n\n
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\n MEI-144 is generally less subject to corrosion than other engineering metals.\n Resistant to industrial atmosphere, industrial and drinking water\n (max flow 4.5\u20136.0 ft\/s), pure water vapour, non-oxidizing acids,\n alkalis (except ammonia\/cyanide) and neutral saline solutions.\n Not resistant to oxidizing acids, hydrous ammonia,\n halogenated gases or seawater at high flow rates.\n <\/p>\n <\/div>\n<\/div>\n\n\n

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\n TYPICAL APPLICATIONS\n <\/th>\n <\/tr>\n\n
\u2022 Heat exchangers and thermal management<\/td>\n \u2022 Transistors and semiconductor components<\/td>\n <\/tr>\n\n
\u2022 Mineral insulated cables<\/td>\n \u2022 Connectors, terminals and strip for plating<\/td>\n <\/tr>\n <\/table>\n<\/div>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"

Overview MEI-144 (Cu-TBC) is tin and phosphorus co-doped copper (76% IACS) with improved softening resistance at elevated temperatures. Not susceptible tohydrogen embrittlement. Ideal for semiconductor components, connectors and terminals requiring thermal stability. CHEMICAL COMPOSITION (wt. %) ALLOY DESIGNATIONS COIL \/ SHEET SPECIFICATIONS Element Composition (%) Standard Designation Specification Range Cu ≥99.500 (Min.) IS IS 3331 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-505","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/pages\/505","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/comments?post=505"}],"version-history":[{"count":4,"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/pages\/505\/revisions"}],"predecessor-version":[{"id":510,"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/pages\/505\/revisions\/510"}],"wp:attachment":[{"href":"https:\/\/web.keywordindia.in\/mittal\/wp-json\/wp\/v2\/media?parent=505"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}