{"id":48938,"date":"2025-02-25T06:50:56","date_gmt":"2025-02-25T06:50:56","guid":{"rendered":"https:\/\/www.kaysuns.com\/?p=48938"},"modified":"2025-12-15T07:06:57","modified_gmt":"2025-12-15T07:06:57","slug":"resistencia-a-corrosao-por-acido-fosforico-umido-da-liga-g-30","status":"publish","type":"post","link":"https:\/\/www.kaysuns.com\/pt\/resistencia-a-corrosao-por-acido-fosforico-umido-da-liga-g-30\/","title":{"rendered":"Liga G-30: Testemunha de 30 anos de resist\u00eancia \u00e0 corros\u00e3o por \"\u00e1cido fosf\u00f3rico \u00famido"},"content":{"rendered":"
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Hastelloy Liga G-30<\/strong> (UNS N06030) \u00e9 um n\u00edquel-cromo-ferro<\/a> material que pertence ao Fam\u00edlia de ligas Hastelloy<\/a> ,S\u00e9rie Hastelloy G<\/a>com alta resist\u00eancia ao \u00e1cido fosf\u00f3rico \u00famido (P2O5). Ele foi inventado nas d\u00e9cadas de 1970 e 1980 e est\u00e1 em uso h\u00e1 mais de 30 anos.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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Composi\u00e7\u00e3o qu\u00edmica da liga G-30<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Devido ao seu alto teor de cromo, a liga G-30 \u00e9 muito resistente a outros \u00e1cidos oxidantes. Devido ao seu significativo molibd\u00eanio<\/a> e teor de cobre, \u00e9 muito resistente aos \u00e1cidos clor\u00eddrico e sulf\u00farico. A liga G-30 tamb\u00e9m \u00e9 resistente a temperaturas moderadas. ataque local induzido por cloreto<\/a>. Isso pode explicar os dep\u00f3sitos abaixo nos evaporadores usados para concentrar P2O5.<\/p>

A liga G-30 foi projetada especificamente para resistir ao ataque do \u00e1cido fosf\u00f3rico comercial. A liga \u00e9 particularmente bem-sucedida em tubos de troca de calor e outros componentes no setor de fertilizantes. Seu alto teor de cobalto tamb\u00e9m a torna a liga preferida para decapagem de solu\u00e7\u00f5es fortemente oxidantes.<\/p>

A chapa G-30 est\u00e1 em conformidade com a ASME SB 582\/ASTM B 582. O estoque de barras est\u00e1 dispon\u00edvel em ASME SB 581\/ASTM B 581.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t

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\n\t\t\t\t\t\tServi\u00e7os de processamento de ligas\t\t\t\t\t<\/div>\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t
\n\t\t\t\t\t\n\t\t\t\t\t\tContate-nos\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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Peso %<\/td>\n<\/tr>\n
N\u00edquel<\/td>\n43 Balan\u00e7o<\/td>\n<\/tr>\n
Cr\u00f3mio<\/td>\n30<\/td>\n<\/tr>\n
Ferro<\/td>\n15<\/td>\n<\/tr>\n
Molibd\u00eanio<\/td>\n5.5<\/td>\n<\/tr>\n
Tungst\u00eanio<\/td>\n2.5<\/td>\n<\/tr>\n
Cobre<\/td>\n2<\/td>\n<\/tr>\n
Ni\u00f3bio<\/td>\n0.8<\/td>\n<\/tr>\n
Cobalto<\/td>\n5 m\u00e1x.<\/td>\n<\/tr>\n
Mangan\u00eas<\/td>\n1,5 m\u00e1x.<\/td>\n<\/tr>\n
Sil\u00edcio<\/td>\n0,8 m\u00e1x.<\/td>\n<\/tr>\n
Carbono<\/td>\n0,03 no m\u00e1ximo.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n43Ni-30Cr-15Fe-5.5Mo-2.5W-50Co\ufe61-2Cu\ufe61-1.5Cb\ufe61-1.5Mn\ufe61-1Si\ufe61-0.03C\nConsum\u00edveis de soldagem: Hastelloy americano G-30\/ERNiCrMo-11\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t
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\u00c1cido fosf\u00f3rico de processo \u00famido<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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O \u00e1cido fosf\u00f3rico \u00famido (P2O5) \u00e9 proveniente da rea\u00e7\u00e3o do min\u00e9rio de fosfato com o \u00e1cido sulf\u00farico.<\/p>

Ele cont\u00e9m muitas impurezas e tem uma concentra\u00e7\u00e3o de P2O5 de apenas cerca de 30%. Isso ocorre porque \u00e9 necess\u00e1ria uma grande quantidade de \u00e1gua de enx\u00e1gue para separ\u00e1-lo do outro produto principal da rea\u00e7\u00e3o, o sulfato de c\u00e1lcio. As impurezas t\u00edpicas incluem \u00e1cido sulf\u00farico que n\u00e3o reagiu, v\u00e1rios \u00edons met\u00e1licos, \u00edons fluoreto e \u00edons cloreto. Os \u00edons fluoreto tendem a formar complexos com \u00edons met\u00e1licos e, portanto, s\u00e3o menos abundantes do que os \u00edons cloreto. Isso influencia muito a rea\u00e7\u00e3o eletroqu\u00edmica entre o \u00e1cido fosf\u00f3rico do \"Wet Process\" e o material met\u00e1lico. O material particulado tamb\u00e9m pode estar presente no \u00e1cido do \"Wet Process\".<\/p>

Normalmente, a concentra\u00e7\u00e3o de P2O5 \u00e9 aumentada para 54% nesse processo. A concentra\u00e7\u00e3o de impurezas diminui com o aumento da concentra\u00e7\u00e3o de \u00e1cido fosf\u00f3rico. Isso neutraliza o efeito de concentra\u00e7\u00e3o da corrosividade do \u00e1cido.<\/p>

O gr\u00e1fico abaixo, comparando a liga G-30 com o a\u00e7o inoxid\u00e1vel. Dados de corros\u00e3o baseados em testes de tr\u00eas concentra\u00e7\u00f5es diferentes (36, 48 e 54%) de \u00e1cido fosf\u00f3rico \"Wet Process\" a 121\u00b0C (250\u00b0F).<\/p>\t\t\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\t\t\t\t\t\t\t\t\t\t\t\t\"Compara\u00e7\u00e3o\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Resistente ao \u00e1cido clor\u00eddrico e ao \u00e1cido sulf\u00farico, o resist\u00eancia \u00e0 corros\u00e3o<\/a> Os dados do G-30 s\u00e3o os seguintes.<\/p>\t\t\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\t\t\t\t\t\t\t\t\t\t\t\t\"Compara\u00e7\u00e3o\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Os dados comparativos de desempenho para resist\u00eancia \u00e0 corros\u00e3o por \u00e1cido clor\u00eddrico s\u00e3o os seguintes.<\/p>\t\t\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\t\t\t\t\t\t\t\t\t\t\t\t\"Compara\u00e7\u00e3o\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"

A liga Hastelloy G-30 (UNS N06030) \u00e9 um material de n\u00edquel-cromo-ferro que pertence \u00e0 fam\u00edlia de ligas Hastelloy, s\u00e9rie Hastelloy G, com alta resist\u00eancia ao \u00e1cido fosf\u00f3rico \u00famido (P2O5). Foi inventada nas d\u00e9cadas de 1970 e 1980 e est\u00e1 em uso h\u00e1 mais de 30 anos. Composi\u00e7\u00e3o qu\u00edmica da liga G-30 Devido ao seu alto teor de cromo... Leia mais \"Liga G-30: Testemunha de 30 anos de resist\u00eancia \u00e0 corros\u00e3o por \"\u00e1cido fosf\u00f3rico \u00famido<\/span><\/a><\/p>","protected":false},"author":1,"featured_media":48950,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","neve_meta_reading_time":"","_ti_tpc_template_sync":false,"_ti_tpc_template_id":"","footnotes":""},"categories":[316,186],"tags":[],"class_list":["post-48938","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","category-stainless-steel-knowledge"],"yoast_head":"\nG-30 Alloy: "Wet Phosphoric Acid" Corrosion Resistance<\/title>\n<meta name=\"description\" content=\"Hastelloy G-30 alloy (UNS N06030) is a nickel-chromium-iron material with high resistance to wet phosphoric acid (P2O5).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.kaysuns.com\/pt\/resistencia-a-corrosao-por-acido-fosforico-umido-da-liga-g-30\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"G-30 Alloy: "Wet Phosphoric Acid" Corrosion Resistance\" \/>\n<meta property=\"og:description\" content=\"Hastelloy G-30 alloy (UNS N06030) is a nickel-chromium-iron material with high resistance to wet phosphoric acid (P2O5).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kaysuns.com\/pt\/resistencia-a-corrosao-por-acido-fosforico-umido-da-liga-g-30\/\" \/>\n<meta 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