H13 Tool Steel | 1.2344 | X40CrMoV5-1 | SKD61 Hot Work Steel
H13 Tool Steel is chromium hot work tool steels which are widely used in hot and cold work tooling applications. H13 tool steel is classified as group H steels by the AISI classification system. This series of steels start from H1 to H19. AISI H-13 tool steel is characterized by: Good resistance to abrasion at both low and high temperatures High level of toughness and ductility Uniform and high level of machinability and polishability Good high-temperature strength and resistance to t...
is chromium hot work tool steels which are widely used in hot and cold work tooling applications. is classified as group H steels by the AISI classification system. This series of steels start from H1 to H19.
AISI H-13 tool steel is characterized by:
Good resistance to abrasion at both low and high temperatures
High level of toughness and ductility
Uniform and high level of machinability and polishability
Good high-temperature strength and resistance to thermal fatigue
Excellent through-hardening properties
Very limited distortion during hardening
steel H13, the molybdenum and vanadium act as strengthening agents. The
chromium content assists die steel H-13 to resist softening when used
at high temperatures. H-13 die steels offers an excellent combination of
shock and abrasion resistance, and possesses good red hardness. It is
capable of withstanding rapid cooling and resists premature heat
checking. Tool Steel H13 has good machinability, good weldability, good
ductility, and can be formed by conventional means.
Due to H13
tool steel excellent combination of high toughness and fatigue
resistance, AISI H13 hot work tool steel is used more than any other
tool steel in tooling applications.
1. Common H13 Tool Steel Related Specifications
2. H13 Tool Steel Chemical Composition
|DIN ISO 4957||C||Mn||P||S||Si||Cr||V||Mo|
3. AISI H13 Steel Mechanical Properties
|Tensile strength, ultimate (@20°C/68°F, varies with heat treatment)||1200 – 1590 MPa||174000 – 231000 psi|
|Tensile strength, yield (@20°C/68°F, varies with heat treatment)||1000 – 1380 MPa||145000 – 200000 psi|
|Reduction of area (@20°C/68°F)||50.00%||50.00%|
|Modulus of elasticity (@20°C/68°F)||215 GPa||31200 ksi|
4. Forging of H13 Tool Steel
Heating for forging must be done slowly and uniformly. Soak through at
1900°-2000°F and reheat as often as necessary, stopping work when the
temperature drops below 1650°F. After forging, cool slowly in lime,
mica, dry ashes or furnace. H-13 should always be annealed after
5. Heat Treatment for H13 Tool Steels
slowly to 1550°-1650°F, hold until entire mass is heated through, and
cool slowly in the furnace (40F per hour) to about 1000°F, after which
cooling rate may be increased. Suitable precautions must be taken to
prevent excessive carburization or decarburization.
desirable to relieve the strains of machining, heat slowly to
1050°-1250°F, allow to equalize, and then cool in still air (Strain
Preheat Prior to Hardening
Warm slightly before charging into the preheat furnace, which should be operating at 1400°-1500°F.
tool steel is a steel having very high hardenability and should be
hardened by cooling in still air. The use of a salt bath or controlled
atmosphere furnace is desirable to minimize decarburization, and if not
available, pack hardening in spent pitch coke is suggested. The
temperature employed is usually 1800°-1850°F, depending on size section.
in still air or dry air blast. If complicated forms are to be hardened,
an interrupted oil quench can be used. Quench part in oil and remove
from bath when it just loses its color (1000°-1100°F). Finish cooling to
below 150°-125°F in air, then temper immediately.
practice may vary with size and application, but is usually performed
in the range of maximum secondary hardness or higher. Double tempering
is recommended. The results below is H13 that was air quenched from
1800°F and tempered for 4 hours at various temperatures. The results may
be used as a guide, keeping in mind that parts of heavy section or mass
may be several points lower in hardness.
6. Application of AISI H13 Tool Steel
As Tools for Extrusion
|Part||Aluminium, magnesium alloys, HRC||Copper alloys HRC||Stainless steel HRC|
|Dies, Backers, die-holders, liners, dummy blocks, stems||44-50||43-47||45-50|
As Plastic Molding Tool Steel
|Injection molds Compression/ transfer molds||1,870-1,885°F (1,020-1,030°C)||50-52|
|Tempering 480°F (250°C)|
|Severe cold punching, scrap shears||1,870-1,885°F||50-52|
|Tempering 480°F (250°C)|
|Tempering 480°F (250°C) or|
|Shrink rings (e.g. for cemented carbide dies)||1,870-1,885°F||45-50|
|Tempering 1,070°F (575°C)|
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