C45

Steel C45 Round Bar is an unalloyed medium carbon steel, which is also a general carbon engineering steel. C45 is a medium strength steel with good machinability and excellent tensile properties. C45 round steel is generally supplied in the black hot rolled or occasionally in the normalised condition, with a typical tensile strength range 570 – 700 Mpa and Brinell hardness range 170 – 210 in either condition. It does not however respond satisfactorily to nitriding due to a lack of suitable alloying elements.

C45 round bar steel is equivalent to EN8 or 080M40. Steel C45 bar or plate is suitable for the manufacture of parts such as gears, bolts, general-purpose axles and shafts, keys and studs.

Applications for C45 steel

DIN C45 round bar steel material and steel plate C45, flats are widely used in all industry for uses which require more strength and wear resistance than the low carbon mild steel.

Quenched and subsequently tempered steel for C45 steel grade round bar, steel plate, flat and square is used for

  • Axles
  • Bolts
  • Forged connecting rods
  • Crankshafts
  • Torsion bars
  • Light gears
  • Guide rods
  • Screws
  • Forgings
  • Wheel tyres
  • Shafts
  • Sickles
  • Axes
  • Knives
  • Wood working drills
  • Hammers

    • USA

    ASTM
    A29

    1045

    Australia

    AS
    1442

    1045

    Japan

    JIS
    G4051

    S45C

    British

    EN
    10083-2

    C45/1.1191

    Grade C Mn P S Si Ni Cr
    1045 0.43 - 0.50 0.60 - 0.90 0.04 0.050 - - -
    C45/1.1191 0.42 - 0.50 0.50 - 0.90 0.03 0.035 0.04 0.4 0.4
    S45C 0.42 - 0.48 0.60 - 0.90 0.03 0.035 0.15 - 0.35 - -