Unverified85% confidenceDecision RuleTime unknown
螺丝刀批头选S2合金钢（硬度HRC58-62）优于普通铬钒钢（CrV），S2抗扭断能力强适合高扭矩场景；日常拧家具用CrV即可
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Unverified批头材质选S2合金钢优于普通铬钒钢(CR-V)，S2硬度达HRC58-62，拧紧固螺丝不易崩齿，CR-V更适合低扭矩场景89% similarUnverified螺丝刀批头材质选S2合金钢优于普通碳钢（Cr-V），S2硬度可达HRC58-62，适合高扭矩场景不易崩口；铬钒钢(Cr-V)硬度约HRC48-52更适合扳手类工具89% similarUnverified批头材质选S2合金钢（洛氏硬度HRC58-62）优于CR-V铬钒钢，S2韧性和硬度平衡更好，适合高扭矩拆卸不易崩尖，纯碳钢批头易生锈磨损85% similarUnverified批头材质优先选S2合金钢（硬度HRC58-62），铬钒钢CR-V偏软适合低扭矩场景，拆锈死或高扭矩螺丝时CR-V批头易崩齿或打滑磨圆84% similarUnverified批头材质优先选S2合金钢（硬度HRC58-62），铬钒钢(CR-V)硬度略低更适合家用低强度场景；廉价套装常用碳钢批头拧几次就打滑崩口82% similar
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