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Ameralloy-5 is formulated primarily for use in pneumatic and shock tools, and well suited to shock resistant parts in which a combination of great ductility and hardness is required. Carbon tool steels under Rockwell C 60 cannot compare in shock resistance to the alloyed grades. Ameralloy-5 is normally oil-quenched, particularly when machining intricate parts using Ameralloy-5.
Quenching in water produces satisfactory results, but additional care should be taken if the part has drastic sectional changes or sharp corners.

Typical Analysis

  • Carbon .60
  • Manganese .85
  • Vanadium .25
  • Silicon 2.00
  • Molybdenum .50

Features And Advantages

  • Maximum shock resistance for hardness in the range of Rockwell C 58–60
  • Good wear resistance
  • Oil and water hardening

Heat Treatment

  • Forging 1850°–1950°F, stop at 1650°F
  • Annealing 1450°F, furnace-cool. Brinell 229 max.
  • Hardening 1600°F, oil-quench or water-quench
  • Tempering 400°– 650°F, average hardness after heat treatment Rockwell C 57–61
  • Annealing Pack-annealing in sealed containers using inert material is preferable because of the decarburization tendency of this steel. Otherwise, controlled-atmosphere furnaces may be used. Heat slowly to 1450°F, and hold for 1 hour per inch of greatest thickness. To obtain optimal machining properties, Ameralloy-5 should be cooled slowly to 1000°F. Careful annealing should result in a hardness of Brinell 229 max.
  • Hardening Ameralloy-5 is primarily an oil hardening grade, However, satisfactory results can be achieved with water-quenching when the design is not too intricate. Hardening temperature for both oil- and water-quenching is 1600°F. Holding time at hardening heat should be just sufficient for uniformity of temperature. Holding time should not exceed 1/2 hour per inch of greatest thickness because of the danger of excessive decarburization. Temper immediately after quenching.
    OIL-QUENCH WATER-QUENCH
    Quenching Temperature (°F) Fracture Grain Size Rockwell C Fracture Grain Size Rockwell C
    1450- 8 49 8 51
    1500- 55 9 59
    1550- 61 64
    1600- 64 65
    1650- 9 63 65
  • Tempering Temperature should range between 400°–650°F, depending on the service desired. Normal tempering procedure for Ameralloy-5 is to hold at temperature for at least 2 hours per inch of greatest thickness.

    Resulting Rockwell hardness for tempering oil- and water-quenched 3/4” dia. specimens at various temperatures

    Tempering Temperature (°F 1600°F Oil-Quench Rockwell C 1600°F Water-Quench Rockwell C
    300° 63 63
    400° 61 61
    500° 60.5 60
    600° 59 59
    700° 57.5 57.5
    800° 53 53.5
    900° 51 51
    1000° 49 48
    1100° 47 45
    1200° 40.5 40
    1300° 33.5 33

Applications

  • Asphalt cutters
  • Beading tools
  • Caulking tools
  • Moil points
  • Pavement breakers
  • Pneumatic chipping chisels
  • Punches
  • Rivet busters
  • Rivet sets
  • Shear blades

General Instructions

  • Forging Heat Ameralloy-5 to 1850°–1950°F and do not forge below 1650°F. Ameralloy-5 is subject to decarburization, and therefore should not be held at the forging temperature longer than necessary. After forging, the steel should be cooled slowly in a heat-insulating material such as dry ashes, dry lime, or vermiculite.

Available Shapes And Sizes

Rounds Decarb Free Or Hot Rolled Annealed

    • 1/4
    • 5/16
    • 3/8
    • 7/16
    • 1/2
    • 5/8
    • 3/4
    • 7/8
    • 1
    • 1-1/8
    • 1-1/4
    • 1-3/8
    • 1-1/2
    • 1-5/8
    • 1-3/4
    • 1-7/8
    • 2
    • 2-1/8
    • 2-1/4
    • 2-1/2
    • 2-3/4
    • 3
    • 3-1/4
    • 3-1/2
    • 3-3/4
    • 4
    • 4-1/4
    • 4-1/2
    • 4-3/4
    • 5
    • 5-1/8
    • 6

Squares

    • 3/8
    • 1/2
    • 5/8
    • 3/4
    • 1
    • 1-1/4
    • 1-3/8
    • 1-1/2
    • 1-3/4
    • 2
    • 2-1/2
    • 3
    • 4

Octagons

    • 1/4
    • 3/8
    • 7/16
    • 1/2
    • 5/8
    • 3/4
    • 7/8
    • 1
    • 1-1/8
    • 1-1/4

Hexagons

    • 3/8
    • 1/2
    • 5/8
    • 3/4
    • 7/8
    • 1
    • 1-1/8
    • 1-1/4
    • 1-1/2

Billets

    • Round Cornered Square
    • 4
    • 6
    • 8
    • 10

Flats

    • 3/8
    • x 1
    • x 1-1/2
    • x 2
    • x 5
    • 1/2
    • x 5/8
    • x 1
    • x 1-1/2
    • x 2
    • x 2-1/2
    • x 3
    • x 6
    • 3/4
    • x 1
    • x 1-1/2
    • x 2
    • x 2-1/2
    • x 3
    • x 4
    • x 5
    • 1
    • x 1-1/2
    • x 2
    • x 2-1/2
    • x 3
    • x 3-1/2
    • x 4
    • x 4-1/2
    • x 5
    • x 6
    • 1-1/4
    • x 1-1/2
    • x 2
    • x 2-1/2
    • x 3
    • x 4
    • x 5
    • x 6
    • 1-1/2
    • x 2
    • x 2-1/2
    • x 3
    • x 3-1/2
    • x 4
    • x 4-1/2
    • x 5
    • x 5-1/2
    • x 6
    • 1-3/4
    • x 4
    • x 4-1/2
    • x 5
    • x 6
    • 2
    • x 2-1/2
    • x 3
    • x 4
    • x 4-1/2
    • x 5
    • x 6
    • x 8
    • 2-1/2
    • x 3
    • x 4
    • x 4-1/2
    • x 5
    • x 6
    • 3
    • x 4
    • x 4-1/2
    • x 5
    • x 6
    • x 7
    • x 8
    • 3-1/2
    • x 4
    • x 5
    • x 6
    • 4
    • x 4-1/2
    • x 5
    • x 6
    • x 7
    • x 8