{"id":938,"date":"2026-09-10T14:29:20","date_gmt":"2026-09-10T14:29:20","guid":{"rendered":"https:\/\/pinp.sk\/surface-treatments\/black-oxide-coating\/"},"modified":"2026-09-16T13:57:45","modified_gmt":"2026-09-16T13:57:45","slug":"black-oxide-coating","status":"publish","type":"page","link":"https:\/\/pinp.sk\/en\/surface-treatments\/black-oxide-coating\/","title":{"rendered":"Black Oxide Coating"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":0,"parent":919,"menu_order":3,"comment_status":"closed","ping_status":"closed","template":"template-service-detail.blade.php","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-938","page","type-page","status-publish","hentry"],"acf":{"page_hero_eyebrow":"Steel","page_hero_eyebrow_source":{"label":"Nadnadpis","type":"text","formatted_value":"Steel"},"page_hero_heading":"Custom steel\nblackening.","page_hero_heading_source":{"label":"Hlavn\u00fd nadpis (volite\u013en\u00fd)","type":"textarea","formatted_value":"Custom steel\nblackening."},"page_hero_intro":"Basic corrosion protection for steel with virtually no change to part dimensions.","page_hero_intro_source":{"label":"\u00davodn\u00fd text (volite\u013en\u00fd)","type":"textarea","formatted_value":"Basic corrosion protection for steel with virtually no change to part dimensions."},"page_hero_primary_link":{"title":"Contact","url":"https:\/\/pinp.sk\/en\/contact\/","target":""},"page_hero_primary_link_source":{"label":"Hlavn\u00e9 tla\u010didlo (volite\u013en\u00e9)","type":"link","formatted_value":{"title":"Contact","url":"https:\/\/pinp.sk\/en\/contact\/","target":""}},"page_hero_secondary_link":{"title":"+421 907 396 110","url":"tel:+421907396110","target":""},"page_hero_secondary_link_source":{"label":"Ved\u013eaj\u0161ie tla\u010didlo (volite\u013en\u00e9)","type":"link","formatted_value":{"title":"+421 907 396 110","url":"tel:+421907396110","target":""}},"page_hero_note":"Price quotation within 48 hours of documentation delivery.","page_hero_note_source":{"label":"Pozn\u00e1mka pod tla\u010didlami (volite\u013en\u00e1)","type":"text","formatted_value":"Price quotation within 48 hours of documentation delivery."},"service_card_category":"Steel","service_card_category_source":{"label":"Podnadpis","type":"text","formatted_value":"Steel"},"service_card_text":"Reliable anti-corrosion protection that does not alter strict tolerances. The perfect choice for precise close-tolerance steel parts. ","service_card_text_source":{"label":"Text karty","type":"textarea","formatted_value":"Reliable anti-corrosion protection that does not alter strict tolerances. The perfect choice for precise close-tolerance steel parts. "},"service_card_icon":"surface","service_card_icon_source":{"label":"Ikona","type":"select","formatted_value":"surface"},"detail_hero_image":939,"detail_hero_image_source":{"label":"Hero fotografia","type":"image","formatted_value":939},"detail_body":"<h2>What is black oxide coating<\/h2>\nBlack oxide coating is a chemical conversion treatment for steel surfaces that creates a thin dark layer. Unlike paint or thicker galvanic coatings, it changes part dimensions only minimally, which is why it is used for precision components. \n\nTypical examples include screws, bushings, clamping elements, tool parts, levers, and machine components where a black technical appearance and basic corrosion protection are desired.\n\nThe conversion layer itself is not a strong barrier protection. Therefore, the surface is usually preserved with oil or wax after the process, and the resulting durability also depends on storage, handling, and the operating environment. \n\nAppearance is influenced by the material, heat treatment, and surface condition before processing. Parts must be clean and free of scale; machining marks remain visible under the thin layer. \n\nIf a part is intended to operate in a humid exterior or aggressive environment, we will assess a more suitable protection. We can include blackening in a single delivery following machining and heat treatment. ","detail_body_source":{"label":"Hlavn\u00fd obsah detailu","type":"wysiwyg","formatted_value":"<h2>What is black oxide coating<\/h2>\n<p>Black oxide coating is a chemical conversion treatment for steel surfaces that creates a thin dark layer. Unlike paint or thicker galvanic coatings, it changes part dimensions only minimally, which is why it is used for precision components. <\/p>\n<p>Typical examples include screws, bushings, clamping elements, tool parts, levers, and machine components where a black technical appearance and basic corrosion protection are desired.<\/p>\n<p>The conversion layer itself is not a strong barrier protection. Therefore, the surface is usually preserved with oil or wax after the process, and the resulting durability also depends on storage, handling, and the operating environment. <\/p>\n<p>Appearance is influenced by the material, heat treatment, and surface condition before processing. Parts must be clean and free of scale; machining marks remain visible under the thin layer. <\/p>\n<p>If a part is intended to operate in a humid exterior or aggressive environment, we will assess a more suitable protection. We can include blackening in a single delivery following machining and heat treatment. <\/p>\n"},"detail_projects_heading":"Project showcase","detail_projects_heading_source":{"label":"Nadpis realiz\u00e1ci\u00ed","type":"text","formatted_value":"Project showcase"},"detail_projects_link":{"title":"Projects","url":"https:\/\/pinp.sk\/en\/projects\/","target":""},"detail_projects_link_source":{"label":"Odkaz na v\u0161etky projekty","type":"link","formatted_value":{"title":"Projects","url":"https:\/\/pinp.sk\/en\/projects\/","target":""}},"detail_related_process":"upravy","detail_related_process_source":{"label":"Filter s\u00favisiacich projektov","type":"select","formatted_value":"upravy"},"page_faq_heading":"Frequently asked questions","page_faq_heading_source":{"label":"Nadpis","type":"text","formatted_value":"Frequently asked questions"},"page_faq_intro":"Didn't find what you were looking for? Write to us and we will respond regarding your specific part \u2014 no generalizations. ","page_faq_intro_source":{"label":"\u00davod","type":"textarea","formatted_value":"Didn't find what you were looking for? Write to us and we will respond regarding your specific part \u2014 no generalizations. "},"page_faq_items":[1424,1427,1430,1433,1436],"page_faq_items_source":{"label":"Priraden\u00e9 ot\u00e1zky","type":"relationship","formatted_value":[1424,1427,1430,1433,1436]}},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Custom black oxide coating for steel | PINP<\/title>\n<meta name=\"description\" content=\"Black oxide coating of steel parts for a dark technical appearance and basic corrosion protection with minimal dimensional changes.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/pinp.sk\/en\/surface-treatments\/black-oxide-coating\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Custom black oxide coating for steel | PINP\" \/>\n<meta property=\"og:description\" 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