Existe una confusi\u00f3n persistente entre tres documentos que se parecen y no son intercambiables. Una ficha t\u00e9cnica describe las propiedades t\u00edpicas de un grado. Un certificado de material indica las propiedades medidas o declaradas del lote concreto que ha recibido. Una declaraci\u00f3n de conformidad indica la conformidad con un reglamento.<\/p>\n\n
Para la mayor\u00eda del trabajo industrial, la ficha t\u00e9cnica es suficiente. Cuando la pieza est\u00e1 relacionada con la seguridad, es de contacto con alimentos, es m\u00e9dica o est\u00e1 sujeta a un r\u00e9gimen de inspecci\u00f3n de entrada, necesita el certificado de lote y necesita que incluya el n\u00famero de lote o de partida que figura en el albar\u00e1n y en el propio material.<\/p>\n\n
That chain is what makes a complaint investigable. If a customer tells us eighteen months later that a batch machined badly, we can trace the lot back to the incoming inspection record and to the mill's own batch number, and check whether anything else from that batch generated a similar report. Our standard practice is to include the lot reference on every delivery note even when no certificate is requested, because retrofitting traceability after the fact is not possible.<\/p>\n\n","protected":false},"excerpt":{"rendered":"
Una ficha t\u00e9cnica es un documento comercial. Un certificado de material es una prueba. Saber cu\u00e1l le han entregado evita muchos problemas.<\/p>\n","protected":false},"author":193679612,"featured_media":183,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","advanced_seo_description":"What a material certificate should contain, how lot traceability works in plastic stock shapes, and what to request before release.","jetpack_seo_html_title":"Material Certificates and Lot Traceability | Top Plastic","jetpack_seo_noindex":false,"jetpack_seo_schema_type":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_wpcom_ai_launchpad_first_post":false,"_tp_seo_title":"Material Certificates and Lot Traceability | Top Plastic","_tp_seo_desc":"What a material certificate should contain, how lot traceability works in plastic stock shapes, and what to request before release.","_tp_summary":"","_tp_updated":"","_jetpack_feature_clip_id":0,"_jetpack_hide_featured_image":false,"_jetpack_featured_image_duplicate_dismissed":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[132594],"tags":[132587],"class_list":["post-182","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-compliance","tag-compliance"],"jetpack_publicize_connections":[],"jetpack_likes_enabled":true,"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/pcp8Cz-2W","jetpack-related-posts":[{"id":116,"url":"https:\/\/cntopplastics.com\/es\/food-grade-plastics-guide\/","url_meta":{"origin":182,"position":0},"title":"Pl\u00e1sticos de grado alimentario en 2026: FDA, UE 10\/2011 y grados detectables por metal","author":"jessemei","date":"2026-07-22","format":false,"excerpt":"Which stock shapes are cleared for direct food contact, what documentation you should demand, and when to specify metal and X-ray detectable material.","rel":"","context":"En \u00abCompliance\u00bb","block_context":{"text":"Compliance","link":"https:\/\/cntopplastics.com\/es\/category\/compliance\/"},"img":{"alt_text":"Food-grade plastics in 2026: FDA, EU 10\/2011 and metal-detectable grades","src":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-grade-plastics-guide.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200","width":350,"height":200,"srcset":"https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-grade-plastics-guide.jpg?fit=1000%2C1000&ssl=1&resize=350%2C200 1x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-grade-plastics-guide.jpg?fit=1000%2C1000&ssl=1&resize=525%2C300 1.5x, https:\/\/i0.wp.com\/cntopplastics.com\/wp-content\/uploads\/2026\/10\/n-food-grade-plastics-guide.jpg?fit=1000%2C1000&ssl=1&resize=700%2C400 2x"},"classes":[]},{"id":98,"url":"https:\/\/cntopplastics.com\/es\/iso-9001-2015-recert\/","url_meta":{"origin":182,"position":1},"title":"Recertificaci\u00f3n ISO 9001:2015: qu\u00e9 ha cambiado para nuestros clientes","author":"jessemei","date":"2026-09-17","format":false,"excerpt":"The audit closed with no major findings. 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