{"schemaVersion":"ready-scan.discovery-surface.v1","id":"urn:readyscan:corpus:buyer-question:shanghai-toko-technology-co-ltd-q141380492-answer-6e20a2220eab098eabee","key":"buyer_question:shanghai-toko-technology-co-ltd-q141380492-answer-6e20a2220eab098eabee","kind":"buyer_question","slug":"shanghai-toko-technology-co-ltd-q141380492-answer-6e20a2220eab098eabee","canonicalUrl":"https://readyscan.ai/corpus/buyer-question/shanghai-toko-technology-co-ltd-q141380492-answer-6e20a2220eab098eabee","machineUrl":"https://readyscan.ai/discovery/corpus/buyer-question/shanghai-toko-technology-co-ltd-q141380492-answer-6e20a2220eab098eabee.json","datePublished":"2026-10-19","dateModified":"2026-10-19","materialFingerprint":"fnv1a64:91b3632ba172f820","membershipFingerprint":"fnv1a64:4cc007cc1fe70451","relatedEntitySlugs":["shanghai-toko-technology-co-ltd-q141380492"],"relatedSurfaceKeys":["buyer_question:shanghai-toko-technology-co-ltd-q141380492-answer-061fd7d64c73d1a93caa","buyer_question:shanghai-toko-technology-co-ltd-q141380492-answer-3eb988adf57df35c5881","evidence:shanghai-toko-technology-co-ltd-q141380492","relationship:shanghai-toko-technology-co-ltd-q141380492-products-and-services"],"sourceIds":["ready-scan-subjects"],"provenance":[{"snapshotId":"shanghai-toko-technology-co-ltd-q141380492-content-308dbf47d72df64b-snapshot","sourceId":"ready-scan-subjects","sourceRecordId":"Q141380492","sourceRevisionId":"Q141380492:content:613fb0d0a6e784bd","sourceContentHash":"fnv1a64:a534c20c5ad2db21","recordRevisionId":"Q141380492:content:613fb0d0a6e784bd","recordContentHash":"fnv1a64:90b0619d5ec5a5ef","sourceCanonicalUrl":"https://tokoalloy.com/","sourceModifiedAt":"2026-10-19T06:04:00.475Z","observedOn":"2026-10-19","permission":{"basis":"public_information","evidenceUrl":"https://tokoalloy.com/"},"attributionUrl":"https://tokoalloy.com/"}],"quality":{"method":"same_kind_unique_trigram_floor","minimumUniqueTrigramRatio":0.3,"status":"passed"},"title":"What is PREN and why does it matter?","summary":"Cited source answers across 1 active corpus record.","question":"What is PREN and why does it matter?","answers":[{"entitySlug":"shanghai-toko-technology-co-ltd-q141380492","entityName":"Shanghai Toko Technology Co., Ltd.","answer":"“PREN (Pitting Resistance Equivalent Number) = %Cr + 3.3×%Mo + 16×%N. It quantifies a stainless steel's resistance to pitting corrosion in chloride environments.”","sourceUrls":["https://tokoalloy.com/en/knowledge/faq/"]}]}