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Aobo Steel | Global Tool Steel Supplier in China
H13 Tool Steel Supplier | 1.2344 | SKD61 | Annealed Bulk Supply
Annealed Condition | Stable 20GP Container Supply | For Global Distributors
✓100% UT Tested – SEP 1921-82 Class D/d or E/e
✓Full Batch Traceability with MTC
✓ESR Grade Available Upon Request
✓Surface: Black / Turned / Polished
H13 tool steel (1.2344 / SKD61) is the industry benchmark hot-work tool steel, widely used for aluminum die casting, hot forging, and extrusion tooling.
H13 Tool Steel Supply Overview
| Grade | AISI H13 / DIN 1.2344 / JIS SKD61 |
| Delivery Condition | Fully Annealed (Soft Condition for Machining) |
| Available Forms | Round Bar / Flat Bar / Plate / Forged Block |
| Monthly Production Capacity | Stable hot work steel scheduling |
| Recommended Export Quantity | Full 20GP container (~26 tons) |
| MOQ | 5 tons |
| Lead Time (With Ingot Stock) | Approx. 25 days |
| Lead Time (Fresh Melt) | 35–50 days |
| Lead Time (ESR Grade) | Approx. 60 days |
| Inspection | In-house UT team + Third-party inspection available |
| Documentation | MTC (EN 10204 3.1) + UT Report |
Why Global Distributors Source H13 from Aobo Steel
- Continuous monthly supply of around 1000 tons
- MOQ from 5 tons for wholesale orders
- Container-optimized bar and plate lengths
- Mixed sizes are supported for export loading
- Annealed delivery for downstream machining
- Stable sourcing through integrated supply chain partners
- UT inspection available to SEP 1921-82 D/d or E/e
- MTC and batch traceability with each shipment
- Heat number tracking for order control
- Black, turned, and polished surface options
- Bulk export packing for sea shipment
- Clear conversion path to the dedicated bulk supply page
Production Stability
- Dedicated production planning for hot work tool steel
- Strict segregation control for large cross-section sizes
- Optional ESR (Electro-Slag Remelting) for higher cleanliness
- Controlled alloy sourcing to ensure stable thermal fatigue performance
- Full batch traceability linked to the original heat number
Available H13 Tool Steel Forms
Quality Control for Bulk Orders
Every batch of tool steel supplied by Aobo Steel is verified before shipment to ensure grade accuracy, internal soundness, and traceability for bulk orders.
- Chemical composition verified by a spectrometer
- Ultrasonic testing available (SEP 1921-82)
- Delivered in spheroidized annealed condition
- Mill Test Certificate (EN 10204 3.1) with heat number
- Dimensional and surface inspection before shipment
Export Packaging and Container Loading
- Professional seaworthy export packing
- 20GP loading optimized up to ~26 tons
- Mixed grades and mixed sizes supported
- Anti-rust protection for long sea transit
For international shipments, full-container loading is strongly recommended to ensure cost efficiency and smoother customs processing.
AISI H13 Tool Steel | 1.2344 | SKD61 Gallery
Applications of H13 Tool Steel
- Hot Work Tooling
- Die Casting dies
- Hot Forging Dies and Punches
- Hot Extrusion Dies
- Plastic Injection dies
- Shearing Blades
- Friction Stir Welding (FSW) Tools
- Structural Components
H13 Steel and Its Equivalent Grades’ Composition
| C | Cr | Mo | V | Si | Mn | P | S |
| 0.32 – 0.45% | 4.75 – 5.50% | 1.10 – 1.75% | 0.80 – 1.20% | 0.80 – 1.25% | 0.20 – 0.60% | ≤ 0.030% | ≤ 0.030% |
H13 tool steel equivalent grades’ composition
| Grade | Standard | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Mo (%) | V (%) |
| 1.2344 | DIN | 0.37-0.42 | 0.90-1.20 | 0.30-0.50 | ≤0.030 | ≤0.030 | 4.80-5.50 | 1.20-1.50 | 0.90-1.10 |
| SKD61 | JIS | 0.35-0.42 | 0.80-1.20 | 0.25-0.50 | ≤0.030 | ≤0.030 | 4.80-5.50 | 1.00-1.50 | 0.80-1.15 |
| 4Cr5MoSiV1 | GB | 0.32-0.42 | 0.80-1.20 | 0.20-0.50 | ≤0.030 | ≤0.030 | 4.75-5.50 | 1.10-1.75 | 0.80-1.20 |
We guarantee that all materials are manufactured in strict compliance with the specified chemical compositions for H13, 1.2344, and SKD61.
H13 tool steel properties
The specific properties depend heavily on the tempering temperature. Here are typical longitudinal mechanical properties when air-cooled from 1025 °C (1875 °F) and tempered:
Mechanical Properties (Typical Values at Room Temperature, Double Tempered 2h + 2h)
| Property | 527 °C (980 °F) Temper | 555 °C (1030 °F) Temper | 575 °C (1065 °F) Temper |
| Hardness | 52 HRC | 50 HRC | 48 HRC |
| Tensile Strength (Rm) | 1960 MPa (284 ksi) | 1835 MPa (266 ksi) | 1730 MPa (251 ksi) |
| Yield Strength (Rp0.2) | 1570 MPa (228 ksi) | 1530 MPa (222 ksi) | 1470 MPa (213 ksi) |
| Elongation (in 4D) | 13.0% | 13.1% | 13.5% |
| Reduction in Area | 46.2% | 50.1% | 52.4% |
| Charpy V-notch Impact | 16 J (12 ft·lbf) | 24 J (18 ft·lbf) | 27 J (20 ft·lbf) |
Physical properties
| Property | Value |
|---|---|
| Density | 7.75 – 7.80 g/cm3 |
| Tensile Strength, Ultimate | 1200 – 2050 MPa (174000 – 231000 psi) |
| Tensile Strength, Yield | 1000 – 1380 MPa (145000 – 200000 psi) |
| Hardness | 45-52 HRC (Rockwell C Hardness) |
| Impact Toughness | 20-40 J/cm2 |
| Compressive Strength | 2550 MPa |
H13 Tool Steel Heat Treatment Overview
Hardening
Preheating to around 815°C (1500°F) is recommended before hardening.
Austenitizing temperature: 1010–1040°C (1850–1900°F).
H13 is typically air quenched to minimize distortion and residual stress. Hardness after quenching: 52–54 HRC.
Tempering
Tempering should be performed immediately after quenching.
Typical tempering range: 540–620°C (1000–1150°F). Double tempering is commonly recommended for hot work tooling.
Typical hardness after tempering:
- 540°C: ~47–48 HRC
- 620°C: ~36–38 HRC
Tempering around 500°C (930°F) should generally be avoided due to reduced toughness.