+91-98140 21775
Virat Special Steels
tuv
 

HOT WORK STEEL

  

Shape : Grade :

AISI H21 Steel

Standards

AISI H21

H21
DIN 2581

AFNOR 32CDV12-28

X30WCrV9-3
C Si Mn P S Cr Mo V
0.26-0.36 0.15-0.50 0.15-0.40 0.03 0.03 3.00-3.75 - 0.30-0.60

 

Virat Special Steels AISI H21

Grade Brief:

Virat Special Steels is the biggest Supplier and Stockiest of Hot Work Steel AISI H21.
AISI H21 is a hot work tool steel for oil or air solidifying to grow high hot quality, maintenance of hardness and warmth checking resistance.
This is mostly utilized as hot work devices, instruments for manufacture of hollows, screws, rivets, nuts and bolts. Die casting tools, forming dies, die inserts, hot shear blades.

Tungsten hot-work steels are classified into AISI H21 to AISI H26 grades. These steels have properties similar to high-speed steels. Tungsten, chromium, carbon, and vanadium are the principal alloying components in tungsten hot-work steels. When air-hardened, they are less prone to deformation and have a greater hardening temperature than chromium hot-work steels. Preheating tungsten hot-work steels to operating temperature before use helps prevent breakage. By lowering the carbon content, these steels' thermal shock resistance and hardness may be increased. This is mostly utilized as hot work devices, instruments for manufacture of hollows, screws, rivets, nuts and bolts. Die casting tools, forming dies, die inserts, hot shear blades.


Mode of Supply

Virat Special Steels is the largest stockiest and supplier of AISI H21 tool steel in flat, square and round bar. We provide steel in all sizes as your requirements. AISI H21 die steel is available in flat, square and round shape. Consult our team who will assist you for AISI H21 steel query.

 

aisi-h21-steel


Steel Properties

Hot work steel with good toughness include tungsten Chromium Carbon Vanadium usually is working hardness is 40.0 to 55.0 HRC size available in round, flat and square.


 

Mechanical Properties:

 

Hardness 40-55 HRC
Modulus of elasticity 190-210 GPa

Physical Properties

Depending on the precise composition and heat treatment of the H21/ DIN 2581/ AISI H21 steel, the physical attributes may differ somewhat. Its always advisable to refer to the manufacturer’s specifications for accurate information.

 

Coefficient of thermal expansionat °C 20-100 20-200 20-300 20-400 20-500 20-600 20-700
10-6 m/(m*K) 11.2 11.9 12.2 12.5 12.8 13.0 13.2

 

Thermal Conductivity at °C 100 400 675
W/(m*K) 27.0 29.8 29.1

 

Machinability:

The tungsten percentage in H21/ DIN 2581/ AISI H21 steels makes them harder to manufacture when compared to water hardening low alloy steels, which have 100% machinability whereas H21/ DIN 2581/ AISI H21 has 55%.

 

Heat Treatment & Processes:

Heat Treatment

The H21/ DIN 2581/ AISI H21 steels must be warmed to 816°C (1500°F) and then quickly heated to 1177°C (2150°F) for this procedure. The steels should then be kept at the same temperature for 2 to 5 minutes before being air cooled or oil quenched.

 

Forging:

H21/ DIN 2581/ AISI H21 steel Forging is performed at 1150°C (2100°F) down to 927°C (1700°F) but not below 899°C (1650°F).

 

Annealing:

Annealing of H21/ DIN 2581/ AISI H21 tool steel is performed at 885°C (1625°F) followed by slow furnace cooling at a temperature less than 4°C (40°F) per hour.

 

Cold working:

Cold working may be carried out on H21/ DIN 2581/ AISI H21 tool steels using conventional methods.

 

Welding:

H21/ DIN 2581/ AISI H21 tool steels may easily be welded using a variety of welding techniques.

 

Tempering:

Tempering the H21/ DIN 2581/ AISI H21 steels at 593 to 677°C (1100 to 1250°F) results in a 54 to 36 HRC. A double tempering procedure is recommended, and the pieces should be kept at the same temperature for one hour.

 

Soft annealing °C Cooling Hardness HB
780 – 810 Slowly max. 240

 

Hardening °C Quenching Hardness after quenching HRC
1000 – 1130 Oil or hot bath, 600 – 650 °C 53

 

Tempering °C after Quenching 100 200 300 400 500 550 600 650 700
HRC 49 49 49 49 51 51 50 46 36

DIN 2344
H13

Application

The AISI H21 tungsten hot-work tool steels are mainly used for hot-working dies and toolings, e.g., die casting, extrusion and hot-forming of parts.


Metal Weight Calculator:
Shape:
Quantity:
Diameter
Length:
Results
Calulated Weight: 0 Kgs / 0 Lbs

Addition to other Grades:

HCHCR-D2 Steel , HCHCR-D3 Steel , P20+Ni Steel , P20 Steel , DB6 Steel , H13 Steel, H11 Steel, H21 Steel, H10 Steel, H12 Steel, M2 Steel, M35 Steel, M42 Steel, T1 Steel, DIN 2379 Steel, DIN 2080 Steel, DIN 2738 Steel, DIN 2311 Steel, DIN 2714 Steel, DIN 2344 Steel , DIN 2343 Steel, DIN 2581 Steel, DIN 2365 Steel, DIN 2606 Steel, DIN 3343 Steel, DIN 3243 Steel, DIN 3247 Steel, DIN 3355 Steel AISI D2 Steel, AISI D3 Steel, AISI P20+Ni Steel, AISI P20 Steel, AISI L6 Steel, AISI H13 Steel, AISI H11 Steel, AISI H21 Steel, AISI H10 Steel, AISI H12 Steel, AISI M2 Steel , AISI M35 Steel, AISI M42 Steel , AISI T1 Steel

Products

 

  • C-545, Sector-37, Pace City - II, Gurgaon 122001 (Haryana) India
  • C-146, Focal Point, Phase - V, Ludhiana 141010 (Punjab) India

 

payment