Unverified50% confidenceDecision RuleTime unknown

海边、潮湿环境或需长期户外暴露选304/316不锈钢，316含钼抗氯离子腐蚀更适合海洋环境；铝合金虽轻但阳极氧化层磨损后易在盐雾中点蚀，普通铁镀锌扣3-6个月即锈

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Unverified304不锈钢在沿海高盐雾环境下具备基础防锈能力，但长期浸泡海水或接触氯离子浓度极高的环境仍可能点蚀，需定期检查；若长期水下使用应选316不锈钢。88% similar Unverified304不锈钢在常规户外及潮湿环境下耐腐蚀性良好，但在海边高盐雾环境中长期使用仍可能出现点蚀，优于普通碳钢但弱于316不锈钢87% similar

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