Top Quality D2 Tool Steel | 1.2379 | X153CrMo12 | SKD11 Manufacturer in Madagascar

Top Quality
 D2 Tool Steel | 1.2379 | X153CrMo12 | SKD11 Manufacturer in Madagascar

Short Description:

1. Relevant D2 Steel Specifications Country USA German Japan Standard ASTM A681 DIN EN ISO 4957 JIS G4404 Grades D2 1.2379/X153CrMo12 SKD11 2. D2 Tool Steel Chemical Composition ASTM A681 C Mn P S Si Cr V Mo D2 1.4 1.6 0.1 0.6 0.03 0.03 0.1 0.6 11 13 0.5 1.1 0.7 1.2 DIN ISO 4957 C Mn P S Si Cr V Mo 1.2379/X153CrMo12 1.45 1.6 0.2 0.6 0.03 0.03 0.15 1.6 11 13 0.7 1 0.7 1 JIS G4404 C Mn P S Si Cr V Mo SKD11 1.4 1.6 0.6 0.03 0.03 0.4 11 13 0.2 0.5 0.8 1.2 3. AISI Grade...


  • Length: 3-5.8mm or Customization
  • Surface: black, peeled, or rough turned
  • Heat treatment: air-cooling, normalized, annealed, Q&T
  • Smelting process: EAF+LF+VD
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    We support our buyers with ideal high quality products and high level service. Becoming the specialist manufacturer in this sector, we have gained rich practical experience in producing and managing for Top Quality D2 Tool Steel | 1.2379 | X153CrMo12 | SKD11 Manufacturer in Madagascar, we are now looking forward to even greater cooperation with overseas customers based on mutual benefits. If you are interested in any of our products, please feel free to contact us for more details.


    1. Relevant D2 Steel Specifications

    Country USA German Japan
    Standard ASTM A681 DIN EN ISO 4957 JIS G4404
    Grades D2 1.2379/X153CrMo12 SKD11

    2. D2 Tool Steel Chemical Composition

    ASTM A681 C Mn P S Si Cr V Mo
    D2 1.4 1.6 0.1 0.6 0.03 0.03 0.1 0.6 11 13 0.5 1.1 0.7 1.2
    DIN ISO 4957 C Mn P S Si Cr V Mo
    1.2379/X153CrMo12 1.45 1.6 0.2 0.6 0.03 0.03 0.15 1.6 11 13 0.7 1 0.7 1
    JIS G4404 C Mn P S Si Cr V Mo
    SKD11 1.4 1.6 0.6 0.03 0.03 0.4 11 13 0.2 0.5 0.8 1.2

    3. AISI Grade D2 Steel Mechanical Properties

    Mechanical Properties Metric Imperial
    Hardness, Knoop (converted from Rockwell C hardness) 769 769
    Hardness, Rockwell C 62 62
    Hardness, Vickers 748 748
    Izod impact unnotched 77.0 J 56.8 ft-lb
    Poisson’s ratio 0.27-0.30 0.27-0.30
    Elastic modulus 190-210 GPa 27557-30457 ksi

    Thermal Properties

    Properties

    Conditions

    T (°C)

    Treatment

    Thermal expansion 10.4 x 10-6/ºC 20-100

    4. AISI/ASTM A681 D2 Grade Steel Forging

    Heating for forging of AISI D2 tool steel should
    be done slowly and uniformly. Soak through at 1850°-1950°F and reheat as often
    as necessary, stopping work when the temperature drops below 1700°F(926℃). After D2
    die steel forging, cool slowly in lime, mica, dry ashes or furnace. AISI D2 steel
    should always be annealed after forging.

    5. D2 Tool Steel Heat Treatment

    • Heat Treatment

    ASTM  D2 steels alloy should be preheated very slowly to 815oC (1500oF) and  then temperature can be increased to 1010oC (1850oF). They are then held  at 1010oC (1850oF) for 20 to 45 minutes and air cooled (air quenched).

    • Annealing

    Annealing  of D2 tool steels material should be done at 871 to 898oC (1600 to  1650oF) followed by slow furnace cooling at 4.4oC (40oF) per hour or  less.after which cooling rate may be increased. Suitable precautions  must be taken to prevent excessive carburization or decarburization.

    • Stress Relieving

    When  desirable to relieve the strains of machining, heat D2 grade steel  slowly to 1050°-1250°F, allow to equalize, and then cool in still air  (Strain Relieving).

    • Preheat Prior To Hardening

    Preheat slowly to 1350°-1450°F and hold at this temperature until grade steel D2 material is uniformly heated.

    • Hardening

    After  thorough preheating, heat to 1800°-1850°F. Hold the work piece at the  hardening temperature until it is completely and uniformly heated.

    • Quenching

    AISI  D2 steel tool material is an air hardening steel and will develop  hardness on cooling in still air. To avoid scaling and prevent  decarburization of the work piece surface, controlled atmosphere or  vacuum furnaces are recommended. If these furnaces are not available,  pack hardening, salt baths or wrapping the piece in stainless steel foil  will provide some degree of surface protection in the hardening  process. Parts should be allowed to cool to 150F, or to where they can  be held in the bare hand, and then temper immediately.

    • Tempering

    The  tempering temperature on material D2 steel may be varied according to  the desired hardness. D2 steels can be tempered at 204oC (400oF) for  achieving Rockwell C hardness of 61 and at 537oC (1000oF) for a Rockwell  C hardness of 54.

    6. D2 Tool Steel Material Application
     AISI grade D2 tool steels are used for long run tooling applications,  where wear resistance is important, such as blanking or forming dies and  thread rolling dies.

    Some main applications for D2 tool steel are as below:

    Blanking  Dies, Forming Dies, Coining Dies, Slitting Cutters, Heading Tools, Long  Punches, Forming Rolls, Edging Rolls, Master Tools, Beading Rolls,  Intricate Punches, Extrusion Dies, Drawing Dies, Lamination Dies, Thread  Rolling Dies, Shear Blades, Burnishing Tools, Gauges, Knurls, Wear  Parts.

    We usually hold D2 tool  steel on sale activities, and you would have our price on regular  schedule. Contact us and sign in our newsletter to have D2 tool steel  materials price list and commercial quote today.

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  • 9/11 Finding The Truth by Andrew Johnson playlist – http://www.youtube.com/playlist?list=PLvaxr0OSBw2DtOWulcA96d7sG2rsNyOgb
    Andrew Johnson’s website – http://www.checktheevidence.com

    Individual audio files of the articles in Andrew Johnson’s book 9/11 Finding The Truth can be downloaded from Johnson’s website – http://www.checktheevidence.com/audio/911/index.php?dir=911%20Finding%20the%20Truth%20-%20Audio%20Book/
    There are also many more related audios in the 9/11 archive on Johnson’s website – http://www.checktheevidence.com/audio/911/index.php?dir=&sort=date&order=desc

    Individual articles from 9/11 Finding The Truth can also be read on Johnson’s website – http://www.checktheevidence.co.uk/cms/index.php?option=com_content&task=category&sectionid=1&id=1&Itemid=60

    There’s also a zip file for the entire book:
    Audio Book – 9-11 Finding the Truth.zip (296.4 MB) (Modified: Jan 20 2013 11:22:27 AM)
    Link to zip file – http://www.checktheevidence.com/audio/911/911%20Finding%20the%20Truth%20-%20Audio%20Book/Audio%20Book%20-%209-11%20Finding%20the%20Truth.zip

    9/11 Finding The Truth is also available in other formats for free from here – http://tinyurl.com/911ftb

    This video is made from the audio entitled 09 – A Lengthy Discussion of The Steel in the Debris of the WTC.mp3 (2.4 MB) (Modified: Sep 13 2012 06:36:25 PM)
    mp3 – http://www.checktheevidence.com/audio/911/911%20Finding%20the%20Truth%20-%20Audio%20Book/09%20-%20A%20Lengthy%20Discussion%20of%20The%20Steel%20in%20the%20Debris%20of%20the%20WTC.mp3

    Link to original article (November 2007) – http://www.checktheevidence.co.uk/cms/index.php?option=com_content&task=view&id=145&Itemid=60

    What really happened on 9/11? What can the evidence tell us? Who is covering up the evidence, and why are they covering it up? This book attempts to give some answers to these questions and has been written by someone who has become deeply involved in research into what happened on 9/11. A study of the available evidence will challenge you and much of what you assumed to be true. “Now we are discovering that there is a highly-sophisticated black-ops weaponization of free energy technology and it was responsible for the bizarre, low-temperature [dustification] of the Twin Towers. Dr. Judy Wood has pieced together the physical evidence and Andrew Johnson has highlighted who is working to silence or smear whom, as the powers that be rush to impede or at least contain the dissemination of these startling findings.” – Conrado Salas Cano, M.S. in Physics

    This book is supplimentary to Dr. Judy Wood’s book Where Did The Towers Go? The Evidence Of Directed Free-Energy Technology On 9/11 – http://wheredidthetowersgo.com/
    Dr. Wood’s other website – http://www.drjudywood.com
    Real 9/11 Truth, Not The Authorized “9/11 Truth Movement” playlist – http://www.youtube.com/playlist?list=PL062AC939B69FE7C3

    Here are the links to the article series “Dr. Judy Wood and the future of the earth” by Dr. Eric Larsen, who also wrote the foreword to Dr. Wood’s book Where Did The Towers Go? – http://wheredidthetowersgo.com/

    Part I – http://www.intrepidreport.com/archives/5850
    Part II – http://www.intrepidreport.com/archives/6166
    Part III – http://www.intrepidreport.com/archives/6764
    Part IV – http://www.intrepidreport.com/archives/7433
    Part Five—Conclusion – http://www.intrepidreport.com/archives/8056
    (Part five includes an analysis of Jim Fetzer’s subtle obfuscation, deliberate creation of confusion and general counter-intelligence.)



    My review here: https://www.google.com/url?q=https://goo.gl/mcdWBI&sa=D&ust=1453472790479000&usg=AFQjCNEe8EQpztW3VhsOMQXEHTTA-Ku02A Supply mold steel S136 plastic corrosion resistant round bar

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