{"id":704,"date":"2025-06-17T07:28:39","date_gmt":"2025-06-17T07:28:39","guid":{"rendered":"https:\/\/dura-alloy.com\/?post_type=product&p=704"},"modified":"2025-06-17T07:28:39","modified_gmt":"2025-06-17T07:28:39","slug":"gh4738","status":"publish","type":"product","link":"https:\/\/www.dura-alloy.com\/pt\/produto\/gh4738\/","title":{"rendered":"GH4738"},"content":{"rendered":"

\u00c2mbito de fornecimento para o Aviation Group<\/span><\/strong><\/p>\n

Forjados, var\u00f5es redondos, chapas de a\u00e7o, an\u00e9is, tubos sem costura, chapas de a\u00e7o\/cintas de a\u00e7o, materiais de soldadura de arame, bem-vindo ao inqu\u00e9rito!<\/span><\/strong><\/p>\n

1. Introduction to GH4738 Materials<\/span><\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 GH4738 is a nickel-based high-temperature alloy strengthened by \u03b3’ phase precipitation. It has good gas corrosion resistance, high yield strength and fatigue properties, good process plasticity and stable structure. It is widely used in rotating parts of aircraft engines, and the operating temperature is not higher than 815\u2103. Cold-rolled and hot-rolled sheets, pipes, strips, wires and forgings, castings, and fasteners can be produced.<\/span><\/p>\n

GH4738<\/span><\/strong>\u00a0standard implementation<\/span><\/h3>\n

\u00a0 \u00a0 \u00a0 GJB 1953-1994 \"Especifica\u00e7\u00f5es sobre var\u00f5es laminados a quente de ligas de alta temperatura para pe\u00e7as rotativas de motores aeron\u00e1uticos\"<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 GJB 2611-1996 \"Especifica\u00e7\u00f5es para hastes de tra\u00e7\u00e3o a frio para ligas de alta temperatura para a avia\u00e7\u00e3o\"<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 GJB 2612-1996 \"Especifica\u00e7\u00f5es para estiramento a frio de ligas de alta temperatura para soldadura\"<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 GJB 3020-1997 \"Especifica\u00e7\u00f5es para an\u00e9is de liga de alta temperatura para a avia\u00e7\u00e3o\"<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 GJB 3165-1998 \"Especifica\u00e7\u00f5es sobre var\u00f5es laminados a quente e forjados para pe\u00e7as de carga para a avia\u00e7\u00e3o\"<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 GJB 3782-1999 \"Especifica\u00e7\u00f5es para var\u00f5es de liga de alta temperatura para a avia\u00e7\u00e3o\"<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 HB 5198-1982 \"Varetas deformadas de ligas de alta temperatura para l\u00e2minas de avia\u00e7\u00e3o\"<\/span><\/p>\n

2. Chemical composition of GH4738<\/span><\/strong><\/p>\n\n\n\n\n\n
liga<\/span><\/td>\n%<\/td>\nC<\/td>\nCr<\/td>\nEm<\/span><\/td>\nCo<\/td>\nMo<\/td>\nAl<\/td>\nDe<\/span><\/td>\nB<\/td>\nZr<\/td>\nFe<\/td>\nMn<\/td>\nE<\/span><\/td>\nP<\/td>\nS<\/td>\nCu<\/td>\n<\/tr>\n
Gh4738<\/span><\/td>\nValor m\u00ednimo<\/span><\/td>\n0.03<\/td>\n18<\/td>\nPermanecer<\/span><\/p>\n

quantidade<\/span><\/td>\n

12<\/td>\n3.5<\/td>\n1.2<\/td>\n2.75<\/td>\n0.003<\/td>\n0.02<\/td>\n–<\/td>\n–<\/span><\/td>\n–<\/span><\/td>\n–<\/span><\/td>\n–<\/span><\/td>\n–<\/span><\/td>\n<\/tr>\n
Valor m\u00e1ximo<\/span><\/td>\n0.10<\/td>\n21<\/td>\n15<\/td>\n5.0<\/td>\n1.6<\/td>\n3.25<\/td>\n0.010<\/td>\n0.08<\/td>\n2.0<\/td>\n0.10<\/span><\/td>\n0.15<\/td>\n0.015<\/td>\n0.015<\/span><\/td>\n0.10<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Note: The trace impurities are \u03c9(Pb)\u22640.001%, \u03c9(As)\u22640.0025%, \u03c9(Sn)\u22640.0012%, \u03c9(Sb)\u22640.0025%, and \u03c9(Bi)\u22640.0001%.<\/span><\/p>\n

3. GH4738 physical properties<\/span><\/strong><\/p>\n\n\n\n\n\n
densidade<\/span><\/td>\n8.22g\/cm3<\/td>\n<\/tr>\n
Ponto de fus\u00e3o<\/span><\/td>\n1330-1360 \u2103<\/td>\n<\/tr>\n
magn\u00e9tico<\/span><\/td>\nNon-magnetic<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Condutividade t\u00e9rmica<\/span><\/strong><\/p>\n\n\n\n\n
I\/\u2103<\/span><\/td>\n360<\/td>\n460<\/td>\n545<\/td>\n640<\/td>\n770<\/td>\n855<\/td>\n985<\/td>\n<\/tr>\n
\u03bb\/\uff08W\/\uff08m\u00b7C\uff09\uff09<\/td>\n16.8<\/td>\n18.3<\/td>\n20.2<\/td>\n22.4<\/td>\n24.1<\/td>\n25.3<\/td>\n28.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Capacidade t\u00e9rmica espec\u00edfica<\/span><\/strong><\/p>\n\n\n\n\n
I\/\u2103<\/span><\/td>\n360<\/span><\/td>\n460<\/span><\/td>\n545<\/span><\/td>\n640<\/span><\/td>\n770<\/span><\/td>\n855<\/span><\/td>\n985<\/span><\/td>\n<\/tr>\n
c\/\uff08J\/\uff08kg\u00b7C\uff09\uff09<\/td>\n515<\/td>\n540<\/td>\n573<\/td>\n603<\/td>\n640<\/span><\/td>\n665<\/td>\n707<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Coeficiente de expans\u00e3o linear<\/span><\/strong><\/p>\n\n\n\n\n
I\/\u2103<\/span><\/td>\n20\uff5e100<\/td>\n20\uff5e200<\/td>\n20\uff5e300<\/td>\n20\uff5e400<\/td>\n20\uff5e500<\/td>\n20\uff5e600<\/td>\n20\uff5e700<\/td>\n20\uff5e800<\/td>\n20\uff5e900<\/td>\n<\/tr>\n
A\/10-6C-1<\/span><\/td>\n12.47<\/td>\n12.73<\/td>\n13.04<\/td>\n13.53<\/td>\n13.97<\/td>\n14.47<\/td>\n15.05<\/td>\n15.68<\/td>\n15.95<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

IV. Chemical properties of GH4738<\/span><\/strong><\/p>\n

Oxidation rate of antioxidant<\/span><\/strong>\u00a0\u00a0alloy after 100 hours of test in air medium<\/span><\/p>\n\n\n\n\n
Test time\/h<\/span><\/td>\n900<\/td>\n1000<\/td>\n<\/tr>\n
Oxidation rate\/(g\/(m2.h))<\/span><\/td>\n0.083<\/td>\n0.226<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Corrosion resistance<\/span><\/strong>\u00a0\u00a0alloy has good corrosion resistance against salt spray.<\/span><\/p>\n

V. GH4738 process performance and requirements<\/span><\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 1) The forging temperature of the alloy is easy to form between 1220 and 950\u2103. The alloy is subjected to solid solution treatment after the vigorous forming process.<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 2) The average grain size of the alloy is closely related to the degree of deformation of the forging and the final forging temperature.<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 3) The alloy has good welding properties and can be carried out in various welding. Aging treatment after welding can obtain strength approximately in a complete heat treatment state.<\/span><\/p>\n

\u00a0 \u00a0 \u00a0 4) The heat treatment of parts is carried out in a neutral or reducing atmosphere without sulfur to avoid vulcanization.<\/span><\/p>\n

6. GH4738 application fields<\/span><\/strong><\/p>\n

\u00a0 \u00a0 \u00a0 This alloy is widely used in aircraft engine gas turbines in China, mainly used as rotating parts such as turbine blades and turbine discs, and has mature experience in using it.<\/span><\/p>","protected":false},"excerpt":{"rendered":"

Scope of supply for Aviation Group Forgings, round rods, steel plates, rings, seamless pipes, steel plates\/steel belts, wire welding materials, […]<\/p>","protected":false},"featured_media":705,"template":"","meta":{"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":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","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":""}}},"product_brand":[],"product_cat":[16],"product_tag":[],"class_list":{"0":"post-704","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-high-temperature-alloy","7":"desktop-align-left","8":"tablet-align-left","9":"mobile-align-left","11":"first","12":"instock","13":"shipping-taxable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/product\/704","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/types\/product"}],"version-history":[{"count":0,"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/product\/704\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/media\/705"}],"wp:attachment":[{"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/media?parent=704"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/product_brand?post=704"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/product_cat?post=704"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.dura-alloy.com\/pt\/wp-json\/wp\/v2\/product_tag?post=704"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}