Pono Mea
Hoʻohana ka mea o ka disc brake i ka maʻamau 250 hina hina o koʻu ʻāina, i kapa ʻia ʻo HT250, ʻo ia ka mea like me ka maʻamau G3000 ʻAmelika. ʻO nā koi no nā mea nui ʻekolu o ka haku mele: C: 3.1∽3.4 Si: 1.9∽2.3 Mn: 0.6∽0.9. Nā koi hana mīkini: ikaika tensile> = 206MPa, ikaika kulou> = 1000MPa, deflection> = 5.1mm, koi paʻakikī ma waena: 187∽241HBS.