AISI H13
2017-12-09 18:39:54
H13 is a 5% chromium hot work tool steel designed for applications that require extreme toughness combined with good red-hardness. H13 will allow an extra margin of safety in tools subject to heavy hammer blows, and those containing deep recesses or sharp corners. Although H13 was designed as a hot work steel, it has solved many cold work applications where extra toughness could be gained with some sacrifice of wear resistance.
Steel Grade: AISI H13 | UNS: T20813
CHEMICAL COMPOSITION(H13):
C(%) : 0.30～0.40
Si(%) : 0.80～1.20
Mn(%) : 0.20～0.40
Cr(%) : 4.75～5.50
Mo(%) : 1.25～1.75
V(%) : 0.80～1.20
W(%) : —
Other(%) : —
HEAT TREATMENT AND HARDNESS(H13):
Initial Forging Temperature/℃ : 1070～1150
Finish Forging Temperature/℃ : 900
Annealing/℃ : 840～900
Hardbess HBS|After Annealing : 192～229
Quenching/℃ : 990～1040
Quenching Medium : Air
Tempering/℃ : 540～650
Hardbess HBC|After Tempering : 53～38
H13 is a kind of steel which is formed by adding alloy elements on the basis of carbon steel.
H13 steel is one of the most widely used and representative hot mold steel. Its main characteristics are:
(1) having high hardenability and high toughness;
(2) excellent thermal cracking ability, which can be water-cooled in the workplace;
(3) it has moderate wear resistance and can be used to improve its surface hardness with carburizing or nitriding technology, but it is slightly reduced to reduce thermal cracking resistance.
(4) because of its low carbon content, the secondary hardening capacity is poor in tempering;
(5) has the ability to resist softening under high temperature, but using a temperature higher than 540 ℃ (1000 ℉) hardness of rapid decline (that is, the ability of working temperature is 540 ℃).
(6) small deformation of heat treatment;
(7) medium and high cutting processing;
(8) medium resistance to decarbonization.
Please check this attached for sheet data 
