Mat.No. 1.1203, DIN Ck55, AISI 1055

Mat.No. 1.1203, DIN Ck55, AISI 1055

Short Description:

  Designation by Standards   Mat. No. DIN EN AISI 1.1203 Ck55 - 1055   Chemical Composition (in weight %)   C Si Mn Cr Mo Ni V W Others 0.56 max. 0.40 0.75 max. 0.40 max. 0.10 max. 0.40 - - (Cr+Mo+Ni) = max. 0.63   Description CK55 steel has a higher (0.55%) carbon content for greater strength than the lower carbon alloys. It is hardenable by heat treatment, quench and tempering. Applications Steel for springs, for quenched and tempered springs, for su...


  • FOB Price: US $0.5 - 9,999 / Piece
  • Min.Order Quantity: 100 Piece/Pieces
  • Supply Ability: 10000 Piece/Pieces per Month
  • Port: Shenzhen
  • Payment Terms: L/C,D/A,D/P,T/T
  • Product Detail

    FAQ

    Product Tags

     

    Designation by Standards

     

    Mat. No. DIN EN AISI
    1.1203 Ck55 - 1055

     

    Chemical Composition (in weight %)

     

    C Si Mn Cr Mo Ni V W Others
    0.56 max. 0.40 0.75 max. 0.40 max. 0.10 max. 0.40 - - (Cr+Mo+Ni) = max. 0.63

     

    Description
    CK55 steel has a higher (0.55%) carbon content for greater strength than the lower carbon alloys. It is hardenable by heat treatment, quench and tempering.

    Applications
    Steel for springs, for quenched and tempered springs, for surface hardened products like shafts, bushings, crankshafts, etc.

    Physical properties (avarage values) at ambient temperature
    Modulus of elasticity [103 x N/mm2]: 210
    Density [g/cm3]: 7.85

    Soft Annealing
    Hardness after soft annealing is 229 HB.

    Normalizing
    Normalizing temperature: 825-865oC.

    Hardening
    Harden from a temperature of 840-870oC, 850-880oC followed by water or oil quenching.

    Tempering
    Tempering from the quenched condition may be done at 540-680oC depending upon the strength desired.

    Mechanical Properties in Hardened+Tempered Condition

     

    Diameter (mm) 0.2 % proof stress (N/mm2) Tensile strength (N/mm2) Elongation A5(%) Reduction Z (%)
    up to 16* 540 780-930 12 25
    17-40 460 740-890 14 35
    41-100 420 700-850 15 40
    up to 16 430 630-780 17 40

     

    Hardenability Diagram


    Click the image to enlarge the diagram.

    Diagram Tempering Temperature – Mechanical Properties


    Click the image to enlarge the diagram.

    Forging
    Hot forming temperature: 1100-850oC.

    Machinability
    Machinability is good, rated at 50% that of the AISI 1112 alloy used as a 100% machining rated steel.

    Corrosion Resistance
    This is a steel alloy and will rust if not protected. it is not corrosion resistant.

    Welding
    CK55 steel is weldable by all of the welding methods. However with its higher carbon content it is important to use both pre-heat at 150 to 260oC and post-heat at 590 to 650oC practice per an approved welding procedure.

    Cold working
    In the annealed state the CK55 alloy is readily cold worked by conventional methods.

    Forms manufactured: Please see the Dimensional Sales Program.

    Disclaimer
    The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other puposes. There is no representation that the recipient of this literature will receive updated editions as the become available.

    Unless otherwise specified, registered trademarks are property of Metal Ravne company. Copyright 2015 by Metal Ravne. All rights reserved. Contact our Sales Office for more information.

     

  • Previous:
  • Next:
  • FAQ Content

    Send your message to us:

    INQUIRY NOW
    • * CAPTCHA: Please select the Key

    Related Products

    INQUIRY NOW
    • * CAPTCHA: Please select the Star