Unverified85% confidenceDecision RuleTime unknown
刀片材质选430不锈钢仅防锈及格，选304不锈钢或日本进口420J2高碳不锈钢锋利度和耐腐蚀性更佳，蚀刻工艺（photo-etching）刀刃比冲压刀刃锋利度高且持久，蚀刻刀片可保持3-5年不用换
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85%
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Long-term
Relevance
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Unverified刀刃材质优先选日本进口不锈钢或高碳钢，锋利度保持时间明显长于普通430不锈钢；碳钢更锋利但易生锈需擦干保存，不锈钢免维护但需定期更换刀头88% similarUnverified刀片材质选430不锈钢仅防锈一般，优选440或以上不锈钢（含碳量更高），锋利度保持时间长3倍以上，避免选纯塑料刀片（切硬质食材易变钝断裂）87% similarUnverified刃材优先选SUS420J2或440C不锈钢，硬度约HRC52-58，耐磨且耐洗；廉价套装常用普通碳钢镀层，镀层磨损后易生锈且刃口3-6个月即变钝，剪厚甲会撕裂而非切断87% similarUnverified刀刃材质优先选日本进口高碳不锈钢（如SUS420J2）或钼钒钢，锋利度保持性远高于普通430不锈钢；陶瓷刀刃初始最锋利但脆，掉地易崩口85% similarUnverified刀片材质选不锈钢（304/440）或碳钢，碳钢更锋利耐磨但易生锈需擦干保养，不锈钢维护简单适合家庭用户；避免普通铁镀层刀片，几次后即钝83% similar
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