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牌號    相當於ISO分組號      密度     硬度（≥）         用途
YT15   P10            11.1~11.6    91       適於碳素鋼與合金鋼
                                                 連續切削時的辦精車及
                                                 精車。斷續切時的精車
                                                 旋風車絲，連續麵的半
                                                 精銑和精銑，孔的粗擴
                                                 與精擴。 
YT14   P20            11.2~11.8    90.5    適於對碳素鋼與合金
                                                 鋼不平整麵進行連續
                                                 切削時的粗車，間切削
                                                 時的半精車的精車，連
                                                 需麵的粗銑，鑄孔的擴
                                                 鑽等。
YT5    P30            12.5~13.2    89.5    適於碳素鋼與合金鋼
                                                 （包括鍛件、沖壓件及
                                                 鑄件的表皮）不平整麵
                                                 切削時的粗車、粗刨、
                                                 半精刨、粗銑等。
YG8    K30            14.6~14.9    89.0    適於鑄鐵、有色金
                                                 屬及其合金、非金
                                                 屬材料不平整表麵
                                                 和簡斷切削時的粗
                                                 車、粗刨、粗銑、
                                                 一般孔和深孔的鑽
                                                 擴、擴孔。
YW1    M10            12.7~13.5    91.5    適於耐熱鋼、高錳
                                                 鋼、不銹鋼等難加 
                                                 工鋼材及普通鋼材
                                                 鑄鐵的加工。
YW2    M20            12.5~13.5    90.5    適於耐熱鋼、高錳
                                                 鋼、不銹鋼及合金
                                                 鋼等難加鋼材的加
                                                 工，也適於普通鋼
                                                 材，鑄鐵的加工。
YS8    M05            13.9~14.2    92.5    適用於鐵基、鎳高
                                                 溫合金、高強度的
                                                 精加工適用於冷硬
                                                 鑄鐵、耐熱不銹鋼
                                                 、高錳鋼、淬火鋼
                                                 的精加工。  

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