高速钢

suī rán yě yǒu yìng zhì hé jīn dāo jiān de zuàn tóu má huā zuàn yī bān yòng gāo sù gāng zhì chéng

虽然也有硬质合金刀尖的钻头，麻花钻一般用高速钢制成。

Twist drills are usually made of high-speed steel, although carbide-tipped drills are also available.