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PACIFIC A2 is our most popular grade of cold work tool steel. It has better wear resistance and toughness than O1 plus the dimensional stability offered by air hardening qualities. Where even better wear is required (with a corresponding decrease in toughness) consider D2. Where more toughness is needed consider A6 or S7. If machinability is of prime importance, consider Graph-Air® (A10).


TYPICAL APPLICATIONS

Blanking Dies

Forming Rolls

Plastic Molds

Coining Dies

Gages

Punches

Cold Forming Tools

Knives

Shear Blades

Drawing Dies

Lamination Dies

Slitters

Embossing Dies

Mandrels

Trim Dies

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CHEMICAL COMPOSITION: Heat Analysis - ranges and limits %
C Mn Cr Mo V
1.00 .60 5.00 1.00 .25

THERMAL PROCESSING: Guidelines - Use Good Judgment

FORGING:
Preheat to 1200/1250°F before raising to forging heat of 1850/2000°F, do not forge below 1650°F. Cool slowly to avoid cooling cracks; anneal after forging.
ANNEALING:
Heat slowly to 1550/1600°F and soak prior to cooling at a maximum rate of 40°F per hour to 1000°F (cooling rate below 1000°F is not critical). Typical annealed hardness is 201/235 HB.
STRESS RELIEVING:
Heat to 1200/1250°F and hold 1 hour minimum at temperature. Cool in air.
HARDENING:
Preheat at 1450°F. Austenitize at 1725/1775°F for 20 minutes for small tools to 45 minutes for large tools. Air cool as evenly as possible; as quenched hardness is usually 62/65 HRC. Temper immediately.
TEMPERING (Drawing):
Temper at 350/1000°F immediately after the tool has cooled to 120/150°F. Double tempering is suggested. Allow the tool to cool to room temperature before the final temper.

Tempering
Temperature °F

Approximate
Hardness, HRC

  

Tempering
Temperature °F

Approximate
Hardness, HRC

AQ

63/65

  

700

57/59

350

61/63

  

800

57/59

400

60/62

  

900

57/59

450

55/61

  

1000

56/58

500

58/60

  

1100

49/52

600

57/59

  

1200

42/45

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Shapes and Conditions Available:
Annealed Rounds through 10" Diameter
SE® Flats & Squares from 1/4" through 4" Thickness

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