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H13 tool steel is a secondary hardening steel. It has good tempering resistance, good thermal fatigue resistance, and excellent heat cracking resistance, and maintains high hardness and strength at elevated temperatures.
Use H13, H11 or other hot work tool steel filler material. Annealed Material: Preheat 800-1000°F (425-540°C). Maintain the temperature of the workpiece above 700°F (370°C) during welding. Reanneal after welding or temper at 1400°F (760°C) for 6 hours. Hardened Material: Preheat 800-1000°F (425-540°C).
Tempering: Temper immediately after quenching. The typical tempering range is 1000-1150°F (538-621°C). Hold at the tempering temperature for 1 hour per inch (25.4mm) of thickness, but for 2 hours minimum, then air cool to ambient temperature. Double tempering is required.
Tempering: For hot work applications, H-13 is used in the hardness range HRC 38 to 48. Typical hardness range for die casting is HRC 44 to 48 requiring a temper at approximately 1110°F. For improved shock resistance, the steel is often tempered at temeratures approachung 1150°F, resulting in hardness of HRC 40-44.
H13 v2 Harder than 17-4 PH Stainless Steel and capable of maintaining material properties at high temperatures, H13 tool steel is an extremely versatile material to work with. Markforged H13 can be heat treated to 45 HRC with a UTS of 1500 MPa, and is used by Markforged customers for tool bodies, brazing fixtures, and other
criterion for selecting a tool steel, H13 or S7 (shown in the chart above) would be the obvious choice. Howev-er, all desired characteristics—and the needs of the job—must be consid-ered when making your selection. Tool steel toughness tends to de-crease as the alloy content increases. Toughness is also affected by the
Tempering is carried out in H13 tool steels from 538 to 649°C (1000 to 1200°F) to obtain Rockwell C hardness of 53 to 38. Double tempering can also be performed in these steels for every one hour at the preferred tempering temperature. H13 tool steels are suitable for forming extrusion dies.
