H13

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We could produce AISI H13 H-13 Forged forging Tool Die Steel Round Bars Rods Square rectangular rectangle Flat Bars Shafts,H13 Forged Forging tool die Steel Hollow Bars Forged Forging Sleeves Bushes Bushing Pipes Piping tubes tubings barrels Casing Cases Shells cylinders hubs housings,H13 Forged Forging Steel Rings Seamless Rolled Rings,H13 Forged Forging Steel Blocks Discs Disks Plates ,H13 forged forging Inserts cores,H13 cavities for die casting dies pressure die casting tools,H13 die casting shot sleeves,H13 hot forging dies,H13 Aluminum extrusion dies extrusion tools Extrusion Stems Extrusion die holders extrusion liner dummy blocks,and H13 plastic mold cavities,H13 Forming Punches,H13 Hot Forging Dies stamping dies,H13 hot Shear Blades,H13 Plastic Mold Dies,and H13 Bolt Dies,H13 pressure casting dies for light metals, mandrels, dies, liners, dieholders, bolsters,dummy blocks and containers for metal tube and rod extrusion tools, hot forming dies for steels, brass and aluminum, tools and dies for the manufacture of hollow bodies, screws,nuts, rivets and bolts, moulds, worms and cylinders for the processing of plastics, press dies and die inserts, rolls for profiling tools,hot extrusion equipments, trimming tools, plastic moulding dies, severe cold punching, scrap shears, shrink rings, wear resisting parts, cold heading die casings, hot gripper and header dies, nitrided ejectors. other H13 forged forging parts forged forging pieces forged forging steel components products material as per the requirement

chemical compostion of H13

Carbon		0.32 - 0.45
Chromium		4.75 - 5.5
Manganese		0.2 - 0.5
Molybdenum		1.1 - 1.75
Phosphorus		0.03 max
Silicon		0.8 - 1.2
Sulphur		0.03 max
Vanadium		0.8 - 1.2

H13 Tool Steel is a versatile chromium-molybdenum hot work steel that is widely used in hot work and cold work tooling applications. The hot hardness (hot strength) of H13 resists thermal fatigue cracking which occurs as a result of cyclic heating and cooling cycles in hot work tooling applications. Because of its excellent combination of high toughness and resistance to thermal fatigue cracking (also known as heat checking) H13 is used for more hot work tooling applications than any other tool steel.

Because of its high toughness and very good stability in heat treatment, H13 is also used in a variety of cold work tooling applications. In these applications, H13 provides better hardenability (through hardening in large section thicknesses) and better wear resistance than common alloy steels such as 4140.

Also available as Electro-Slag-Remelted (ESR) and Vacuum-Arc-Remelted (VAR) products as well. The remelting processes provide improved chemical homogeneity, refinement of carbide size, and the associated improvements in mechanical properties and fatigue properties.

HEAT TREATING INSTRUCTIONS

HARDENING

Critical Temperature:

Ac1: 1544°F (840°C) Ac3: 1634°F (890°C)

Ar1: 1475°F (802°C) Ar3: 1418°F (826°C)

Preheating: To minimize distortion in complex tools use a double preheat. Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1150-1250°F (621-677°C), equalize, then raise to 1500-1600°F (816-871°C) and equalize. For normal tools, use only the second temperature range as a single preheating treatment.

Austenitizing (High Heat): Heat rapidly from the preheat. Furnace or Salt: 1800-1890°F (982-1032°C) For maximum toughness, use 1800°F (982°C) For maximum hardness and resistance to thermal fatigue cracking and wear use 1890 (1032°C). Soak at temperature for 30 to 90 minutes.

Quenching: Air, pressurized gas, or warm oil. Section thicknesses up to and including 5 inches (127 mm) will typically fully through harden when cooled in still air from the austenitizing treatment. Sections greater than 5 inches (127 mm) in thickness will require accelerated cooling by using forced air, pressurized gas, or an interrupted oil quench to obtain maximum hardness, toughness and resistance to thermal fatigue cracking.

For pressurized gas quenching, a minimum quench rate of approximately 50°F per minute (28°C per minute) to below 1000°F (538°C) is required to obtain the optimum properties in the steel.

For oil, quench until black, about 900°F (482°C), then cool in still air to 150-125°F (66-51°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. To maximize toughness and tool performance, a third temper is often used as a stress relief after all finish machining, grinding, and EDM work are completed on the tool.

ANNEALING

Annealing must be performed after hot working and before re-hardening.

Heat at a rate not exceeding 400°F per hour (222°C per hour) to 1575-1625°F (857-885°C), and hold at temperature for 1 hour per inch of maximum thickness; 2 hours minimum. Then cool slowly with the furnace at a rate not exceeding 50°F per hour (28°C per hour) to 1000°F (538°C). Continue cooling to ambient temperature in the furnace or in air. The resultant hardness should be a maximum of235 HBS.