Top Quality D2 Tool Steel | 1.2379 | X153CrMo12 | SKD11 Manufacturer in Madagascar
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...
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1. Relevant D2 Steel Specifications
|Standard||ASTM A681||DIN EN ISO 4957||JIS G4404|
2. D2 Tool Steel Chemical Composition
|DIN ISO 4957||C||Mn||P||S||Si||Cr||V||Mo|
3. AISI Grade D2 Steel Mechanical Properties
|Hardness, Knoop (converted from Rockwell C hardness)||769||769|
|Hardness, Rockwell C||62||62|
|Izod impact unnotched||77.0 J||56.8 ft-lb|
|Elastic modulus||190-210 GPa||27557-30457 ksi|
|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
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 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.
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.
After thorough preheating, heat to 1800°-1850°F. Hold the work piece at the hardening temperature until it is completely and uniformly heated.
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.
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.
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§ionid=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