A级爱爱片欧美

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          FOR QUOTES AND ORDERS PLEASE CALL 1-800-547-1091 OR
          PMTSCO

          < RETURN TO TOOL & DIE STEEL

          Trucks

          D-2 Annealed

          Tool & Die Steel PRODUCT

          PACIFIC D2 is the most wear resistant of the commonly available grades of tool steel. It is deep hardening and has very low size change during heat treatment. Because of its inherent wear resistance, D2 has a low machinability rating when compared to other standard alloy tool steel grades. The high chromium content gives it mild corrosion resistance in the hardened condition.


          CHEMICAL COMPOSITION
          Heat Analysis - ranges and limits %

          C
          1.50
          Cr
          12.00
          Mo
          1.00
          C
          1.00

          FORGING:
          Preheat to 1200/1300°F before raising to forging heat of 1850/2000°F. Stop forging at 1700°F. Cool slowly after forging.

          ANNEALING:
          Heat slowly to 1600/1650°F and hold at temperature 1-1/2 to 6 hours depending on part size. Cool at a maximum rate of 40°F per hour to 1000°F (cooling rate below 1000°F is not critical). Typical annealed hardness is 217/255 HB.

          STRESS RELIEVING:
          Heat to 1250/1300°F for 1 hour minimum at temperature and cool in air.

          HARDENING:
          Preheat at 1500°F before raising to an austenitizing temperature of 1825/1875°F; soak 15 to 45 minutes at temperature before cooling in air to harden.

          TEMPERING (Drawing):
          Temper immediately after the tool has cooled to 120/150°F. Double tempering is suggested (after cooling to room temperature from the first temper).


          Tempering Temperature oF
          Approximate Hardness, HRC
          AQ
          62/64
          400
          59/61
          500
          59/61
          600
          58/60
          700
          57/59
          800
          57/59
          900
          57/59
          1000
          56/58
          1100
          48/55
          1200
          40/45

          Shapes and Conditions Available
          Annealed Rounds through 8" Diameter
          SE? Flats & Squares from 3/8" through 2-1/2" Thickness

          A级爱爱片欧美

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