H13 is hot work die steel measuring and cutting tools steel impact resistant tool steel for cold work die steel hot work die steel mold steel non-magnetic plastic mold steel 






 H13 Hot Work Die Steel chemical composition: 
 In%: C0.32 ~ 0.45, Si0.80 ~ 1.20 Mn0.20 ~ 0.50, Cr4.75 ~ 5.50, Mo1.10 ~ 1.75, V0.80 ~ 1.20, p ≤ 0.030, S ≤ 0.030; 
 The use of H13: 
 H13 Tool Steel for the manufacture of the impact load of forging dies, hot extrusion die, Forging; aluminum, copper and its alloys die-casting mold. 





 H13 hot work die steel specifications: of H13 mold steel plate width (210-610) * thickness (6-80) hot-rolled H13 Tool Steel Pipe OD (6-219) * thickness (0.5-25) ESR ingots of H13 mold steel ingot 0.35 T0.5T0.75T1.0T1.5T 1.8T 2.0T 2.2T 2.8T (3.0-8.0) T 



 H13 heat treatment process: 
 Steel and die blanks of a pre-heat treatment on the market supply of H13 steel in the steel mills have been well annealing, to ensure a good microstructure, proper hardness, good workability, and no further annealing. Factory change wrought destruction of the organization and performance, increase the forging stress, you must re-annealing. Isothermal spheroidization annealing process: 860 ~~ 890 ° C heat insulation 2h, cooled to 740 ~~ 760 ℃, temperature 4h, furnace cooling to 500 ℃, baked. 2 quenching and tempering toughness, good mold hardening process specifications: heating temperature of 1020 to 1050 ℃, oil cooling or air cooling, hardness 54 ~ 58 HRC; based thermal rigid mold quenching process specifications, the heating temperature of 1050 ~~ 1080 ° C, oil is cold, hardness 56 ~ 58 HRC. Recommended tempering temperature: 530 ~ 560 ° C, hardness 48 ~ 52HRC; tempering temperature 560 580 ° C; hardness 47 ~ 49HRC. Tempering should be carried out twice. To 500 ℃ tempering, tempering secondary hardening peak, the highest tempering hardness peak at about 55HRC, but the toughness of the worst. Therefore, the tempering process is appropriate to avoid about 500 ℃. Need based on the use of molds, tempering in the range of 540 ~ 620 ℃. Quenching the two warm-up (600 at 650 ℃ for 800 to 850 ℃), heat stress to reduce the heating process. The chemical heat treatment of H13 steel For gas nitriding carbon or nitrogen permeation allows mold to further strengthen, but the nitriding temperature should not exceed the tempering temperature to ensure the strength of the core part is not reduced, thereby enhancing the life of the mold.