OTAI Special Steel is AISI H13 steel stockholders and suppliers from china. We have more than 16 years experience in H13 steel and hot work steel supply.
H13 is a chromium, molybdenum, vanadium hot work tool steel which is characterize by high hardenability, excellent toughness, good resistance, excellent through-hardensing properties and limited distortion during hardening. The chromium content assists H13 to resist softening when use at high temperatures. H13 steel offers an excellent combination of shock and abrasion resistance, and possesses good red hardness.
Tool steel H13 has good machinability, good weldability, good ductility, and can be forme by conventional means. AISI H13 steel 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.
1. Related Specifications of AISI H13 tool steel
| ASTM | W-Nr. | JIS | DIN | GB | BS | KS |
| H13 | 1.2344 | SKD61 | X40CrMoV5-1 | 4Cr5MoSiV | BH13 | STD61 |
2. ASTM H13 steel chemical composition
| C(％) | Si(％） | Mn(％) | P(％) | S(％) | Cr(％) | Mo(％) | V（％） |
| 0.32-0.45 | 0.80-1.25 | 0.20-0.60 | ≤0.030 | 0.03 | 4.75-5.50 | 1.10-1.75 | 0.80-1.20 |
3. Supply range of AISI H13 hot work steel
4. AISI H13 Steel Mechanical Properties
| Properties | Metric | Imperial |
| 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 |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
5. 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. H13 should always be annealed after forging.
6. Heat Treatment for H13 Tool Steels
- Annealing
Heat slowly to 1550°-1650°F, hold until entire mass is heat through, and cool slowly in the furnace (40F per hour) to about 1000°F, after which the cooling rate may be increase. Suitable precautions must be take to prevent excessive carburization or decarburization.
- Stress Relieving
When desirable to relieve the strains of machining, heat slowly to 1050°-1250°F, allow to equalize, and then cool in still air (Strain Relieving). Â
- Preheat Prior to Hardening
Warm slightly before charging into the preheat furnace, which should be operating at 1400°-1500°F.
- Hardening
H13 tool steel is a steel having very high hardenability and should be harden 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 suggest. The temperature employ is usually 1800°-1850°F, depending on size section.
- Quenching
Quench 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.
- Tempering
Tempering 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 quench 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.
| Tempering Temperature F | Rockwell C |
| As Quenched | 48/50 |
| 1000 | 50/52 |
| 1050 | 47/49 |
| 1100 | 46/48 |
| 1150 | 43/48 |
| 1200 | 32/34 |
7. 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 |
| 41-50 | 40-48 | 40-48 | |
| Austenitizing temperature | 1,870-1,885°F | 1,900-1,920°F | |
| (1,020-1,030°C) | (1,040-1,050°C) | ||
- As Plastic Molding Tool Steel
| Part | Austenitizing temp. | HRC |
| Injection molds Compression/ transfer molds | 1,870-1,885°F (1,020-1,030°C) | 50-52 |
| Tempering 480°F (250°C) |
- Other Applications
|
Applications |
Austenitizing temp | HRC |
| Severe cold punching, scrap shears | 1,870-1,885°F | 50-52 |
| (1,020-1,030°C) | ||
| Tempering 480°F (250°C) | ||
| Hot shearing | 1,870-1,885°F | |
| (1,020-1,030°C) | 50-52 | |
| Tempering 480°F (250°C) or | ||
| 1,070-1,110°F | 45-50 | |
| (575-600°C) | ||
| Shrink rings (e.g. for cemented carbide dies) | 1,870-1,885°F | 45-50 |
| (1,020-1,030°C) | ||
| Tempering 1,070-1,110°F | ||
| (575–600°C) | ||
| Wear-resisting parts | 1,870-1,885°F | Core 50-52 Surface ~1000HV1 |
| (1,020-1,030°C) | ||
| Tempering 1,070°F (575°C) | ||
| nitrided |
8. More Technical Details of H13 tool steel
If there are any queries about AISI H13 steel for hot working applications, please feel free to leave a comment below. And welcome Inquiry of AISI H13 tool steel, we are professional and reliable supplier for prime H13 tool steel materials.
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