{"id":1265,"date":"2026-07-14T03:57:19","date_gmt":"2026-07-14T03:57:19","guid":{"rendered":"https:\/\/isbm-blow-molding.com\/?p=1265"},"modified":"2026-07-14T03:57:19","modified_gmt":"2026-07-14T03:57:19","slug":"ibm-mould-steel-selection-h13-vs-p20-vs-s136-for-ibm-tooling","status":"publish","type":"post","link":"https:\/\/isbm-blow-molding.com\/es\/ibm-mould-steel-selection-h13-vs-p20-vs-s136-for-ibm-tooling\/","title":{"rendered":"Selecci\u00f3n de acero para moldes de IBM: H13 vs P20 vs S136 para herramientas de IBM"},"content":{"rendered":"
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IBM MOULD STEEL \u00b7 H13 P20 S136 TOOLING \u00b7 HARDNESS POLISHABILITY \u00b7 SERVICE LIFE \u00b7 KOREA EVER-POWER<\/span><\/p>\n

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IBM Mould Steel Selection:
\nH13 vs P20 vs S136<\/span> for IBM Tooling<\/h1>\n

Mould steel selection for injection blow moulding tooling determines IBM injection cavity dimensional stability, surface polishability for clarity and texture, corrosion resistance to polymer degradation gases, and IBM mould service life across millions of PP, HDPE and PCTG production cycles. Korea Ever-Power Ansan-si selects H13, P20 and S136 tool steel for different IBM container programme requirements based on production volume, material chemistry, surface finish specification and cavity count economics.<\/p>\n

H13 \u2022 P20 \u2022 S136 IBM Mould Steel<\/span>
\nHardness \u2022 Polishability \u2022 Corrosion<\/span>
\nZQ IBM Mould Service Life Guide<\/span><\/div>\n

COREA SIEMPRE PODEROSA \u00b7 ANSAN-SI, GYEONGGI-DO \u00b7 JULIO DE 2026<\/p>\n<\/div>\n<\/header>\n

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IBM MOULD STEEL \u00b7 KEY PROPERTIES AT A GLANCE<\/p>\n<\/div>\n

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H13 TOOL STEEL<\/p>\n

HRC 48\u201352<\/p>\n

Korea Ever-Power standard IBM mould steel. H13 chromium hot-work tool steel provides excellent thermal fatigue resistance (resists thermal cycling from cold polymer melt contact), high hardness at IBM operating temperature, good polishability to Ra 0.025\u20130.05\u03bcm for cosmetic PCTG IBM moulds, and 2\u20135 million IBM cycle service life for PP and HDPE IBM on ZQ machines. Standard Korea Ever-Power specification for all IBM injection cavity and blow mould cavity tooling<\/p>\n<\/div>\n

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P20 TOOL STEEL<\/p>\n

HRC 28\u201334<\/p>\n

Pre-hardened mould steel: P20 supplied at HRC 28\u201334 (no post-machining heat treatment required). Lower cost than H13 at same cavity volume. Used for IBM trial moulds, low-volume programmes (<500,000 cycles) and blow mould cavities where dimensional change from heat treatment warpage is a concern. Polishability limited vs H13; not recommended for PCTG IBM clarity or corrosive polymer (PVC) IBM<\/p>\n<\/div>\n

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S136 STAINLESS<\/p>\n

HRC 48\u201354<\/p>\n

Stainless mould steel (AISI 420 equivalent, 13% Cr): highest corrosion resistance for IBM applications where halogen-containing polymer processing produces HCl or HF gas that corrodes standard H13 tool steel. Premium polishability (Ra \u22640.010\u03bcm SPI A1 standard) for ultra-clarity PCTG IBM pharmaceutical vial and luxury cosmetic IBM. 2\u20134 million IBM cycle life, higher mould cost vs H13<\/p>\n<\/div>\n

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SELECTION DRIVERS<\/p>\n

4 Primary<\/p>\n

Four primary IBM mould steel selection drivers at Korea Ever-Power: (1) surface finish requirement (Ra target for IBM container clarity or texture); (2) production volume (IBM cycle count over programme life); (3) polymer chemistry (PP, HDPE or PCTG corrosion aggressiveness to mould steel); (4) mould investment budget (P20 < H13 < S136 at equal cavity volume, with H13 providing best overall IBM value for most Korea Ever-Power ZQ programmes)<\/p>\n<\/div>\n<\/div>\n<\/div>\n