Brian Madigan Posted May 24, 2013 Share Posted May 24, 2013 (edited) AISI 1084 composed of (in weight percentage) 0.80-0.93% Carbon ©, 0.60-0.90% Manganese (Mn), 0.04%(max) Phosphorus (P), 0.05%(max) Sulfur (S), and the base metal Iron (Fe). ALDO's 1084 certs: Chemistry/Certification Certification: C- .876 Si- .274 Mn- .803 P- .0100 S- .0040 Cr- .153 Ni- .037 Mo-.007 V- .004 W- .003 Cu- .037 Sn- .0030 Al- .006 Annealed Structure: 95% spherodized carbides 0.60-0.90% Mn is important, as is the structure of 95% spherodized carbides. Equipment: Evenheat w/rampmaster controller Parks #50 Quench oil Deep 18" black iron quench tank w/parts basket. ATP-641 anti-scale coating Normalize: 1700/still air (optional*) 1600/still air 1550/still air Austentize: 1500 with 15 minute hold Submerge fully, agitate Cool to Mf (room temp, I usually scrub the blade clean in cold water at this point) Temper: 420f/1 hour x 2. Sometimes 3. Cool to room temp between tempering cycles. Sometimes between tempering I like to do a final polish so I can hot blue it on the final heat. I don't have a Rockwell tester, so I do edge deformation and chipping tests to verify the tempering results occasionally. I use the same HT formula for 1084/15n20 Damascus, with the same result. * With Damascus I do the extra normalizing step because I weld and forge much hotter and slower. Edited May 24, 2013 by Brian Madigan Link to comment Share on other sites More sharing options...
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