H13 steel composition

 

   AISI- H13 steel

Class Hot Die steel
Type Tool steel
Category Hot Work Tool Steel
Grades U.S          ASTM A681, SAE J437, SAE J438,AISI H13

Germany  DIN 1.2344

U.K          B.S,  BH13

Availability In Stock

 

H13 steel composition

Description:

AISI H13 steel is a air hardening hot work tool steel with good toughness and resistance to abrasion.

Application:

Ejector pins, nozzels, swaging dies,Insert, cores, and cavities will for the the Die Casting, die casting shot Sleeve, forging dies, extrusionDies, and plastic mold cavities and components did require high toughness and excellent polish ability.

H13 steel composiion:

                      H13 steel composition
Elements            Weight in %
Carbon             0.32-0.45
Chromium              4.75-5.50
Molybdenum             1.10-1.75
Vanadium             0.80-1.20
Iron               Balance
Silicon             0.80-1.25
Sulphor             0.30 max
Phosphorus             0.30 max
Manganese             0.25-0.50

 

Physical Properties:

Density        0.280 lb/in3 (7750 kg/m3)
Specific Gravity                  7.75
Modulus of Elasticity         0.294 lb/in3 (8138 kg/m3)
Machinability          70% of a 1% carbon steel

 

                                     Coefficient Of Thermal Expansion 48HRC
Temperature   ºF in/inºF x106 Temperature  ºC mm/mmºCx106
    80-200     5.80     21-93    10.40
    80-400     6.30     21-204    11.30
    80-800     6.90     21-316    12.40
    80-1200     7.30     21-428    13.10
    80-1500     7.50     21-358    13.55

 

Tempering:

  Temperature            H13 tool steel
   ºF  ºC                   HRC
 925  500                 53 – 55
1020  550                 52 – 54
1065  575                 50 – 52
1110  600                 47 – 50
1130  610                 46 – 49
1150  621                 44 – 48

 

Heat Treatment:

Hardening:

Preheat at 650 ° C- 850 ° C and raise to 1020 ° C.-1050 ° C.Cool in air, oil or salt bath held at 500 ° C-550 ° C and then cool in air.

Forging:

Forge at 900° C to 1100° C. Cool  slowly and anneal immediately.

Anneal:

Anneal at 850° C-870° C.Cool slowly in furnace.

Temper:

Double tempering recommended at 500° C-650° C cool in air.

Stress Relieving:

Stress relieve at 600° C to 650° C and cool in air.

 

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