Unverified80% confidenceDecision RuleTime unknown
锁扣金属件应选电镀锌或不锈钢，海边/沿海环境优先不锈钢304，普通电镀件在盐雾环境3-6个月内会生锈卡死
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80%
Confidence
Long-term
Relevance
-
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Unverified海边或盐水环境使用必须选阳极氧化处理的铝杆或316不锈钢钩头，普通碳钢钩头3-6个月即锈蚀卡死伸缩节88% similarUnverified潮湿环境优先选304不锈钢或锌合金电镀锁体，避免铁质或普通铝合金内芯，铁质弹簧3-6个月即可能生锈导致卡死87% similarUnverified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83% similarUnverified沿海高盐雾地区或潮湿卫浴外窗，加固件必须选304及以上不锈钢，普通冷轧钢板即便喷塑，边缘冲孔处3-5年内也会锈穿失效83% similar
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