*Always consult your Heat Treater*
     *Information Provided is General*

H-13 is an air hardening, 5% chromium die steel, which is an excellent choice for a wide range of hot works and cold work applications. H-13 is widely used for aluminum, zinc, and magnesium die casting dies where resistance to thermal fatigue due to alternated heating and cooling cycles is of primary importance. The high vanadium content of H-13 increases its resistance to wash caused by the erosive action of the die casting alloy, increases its resistance to heat checking and imparts superior properties at elevated temperatures. H-13 also has excellent impact strength to resist cleavage cracking, is easy to machine, can be water cooled in service, and has excellent size change characteristics.

Other typical hot work uses are aluminum extrusion dies and backers, brass extrusion dummy blocks, shear knives, and forging applications. In forging works, it is recommended for die blocks, inserts, punches, piercers, and heading dies. H-13 is finding increasing usage in cold work applications such as die cases for inserted cold heading dies and intermediate Sendzimir Rolls. It is often used as a cold work shock steel because of its excellent toughness.

To obtain a hardness of Brinell 420-460 (Rockwell C 44-48), H-13 should be tempered at 1075° F-1100°F. Long tempering times and multiple tempers are recommended.

Hardening happens around 1850°F.

H-13 is an oversized material.


  •  + .015 up to .040 on thickness

  •  + .080 up to .125 on width


  •  Up to 1″ + .007 up to .018

  •  1″ up to 6″ + .015 up to .040

  •  6″ and up + .0625 up to .250

 Hardening Temp.:     1825 through 1900°F

 Quench Medium:    Air Salt Bath Oil

 Tempering Range:     1000 through 1200°F

 Typical Hardness Level:    40 to 53 R/C

 Preheat Forging:     1450  through 1500°F

 Forging Temp.:     2050 through 2150°F

 Anneal Temp.:     1550°F

 Anneal Cooling Method: Furnace cool to 1000° F at 100°F per hr., then  air cool.

 Anneal Hardness:     235 BHN

 H-13 Material in Stock

 Color code:  BROWN

 Flat Dimensions

  • 3/8″ x 1 1/8″ up to 5″ x 8″

  • Non standard sizes, quoted upon request

 Round Dimensions

  • ½” up to 13 ½”

  • Non standard sizes, quoted upon request

 H-13 Typical Analysis













 · Slight variations from typical analysis shown may occur in order to  maintain the desired graphitizing potential.