Unverified80% confidenceTradeoffTime unknown
铝合金比钢管轻30%-40%且不生锈，但同管径下抗弯强度较低，需选加粗管径（≥19mm）弥补；海边、潮湿环境优先铝合金避免锈蚀
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Unverified铝合金杆比钢杆轻约30%且不生锈，但抗弯强度略低；海边高盐雾环境优先铝合金或做过阳极氧化处理的杆件防锈89% similarUnverified铝合金框架比钢架轻30-40%且不生锈，适合徒步和潮湿环境；钢架更便宜更稳但重且沿海/雨林易锈蚀，海边露营优先铝合金89% similarUnverified铝合金框架助行器比钢制轻约30-40%（铝款常见2.5-5kg），且不易生锈，适合需频繁搬动或潮湿环境使用86% similarUnverified铝合金架轻便防锈易搬动但强度低于碳钢，同规格下钢架承重高约30%；潮湿卫生间/阳台优选铝或喷塑钢防锈86% similarUnverified铝合金架比钢架轻30-40%且不易锈，适合频繁装拆和沿海潮湿地区；钢架强度更高、成本低，适合长期固定安装的重载场景（如工程车、货运）86% similar
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