Grades: D2, H13
Inox Steel India is a manufacturer, supplier, and exporter of tool steel hex bars, supplying to tooling, die-making, and industrial manufacturing sectors across India, GCC countries, the Middle East, Africa, Europe, and North & South America.
Tool steel hex bars are supplied in D2 and H13 grades, manufactured in accordance with ASTM A681 and DIN specifications. These grades are selected for applications requiring high hardness, wear resistance, and thermal stability, depending on cold-work or hot-work operating conditions.
With controlled heat treatment and dimensional processing, tool steel hex bars supplied by Inox Steel India offer consistent mechanical properties, uniform across-flat dimensions, and suitability for precision tooling applications.
A tool steel hex bar is a solid long product with a hexagonal (six-sided) cross section, manufactured from alloy tool steels designed for cutting, forming, and shaping operations. The hexagonal profile provides positive spanner grip and ease of handling during machining and assembly of tooling components.
Tool steel hex bars are produced from tool steel billets using hot rolling, forging, or cold drawing, followed by controlled annealing or hardening and tempering to achieve the required hardness and toughness.
These properties make tool steel hex bars suitable for die-making, moulds, punches, and industrial tooling applications.
Tool steel hex bars are supplied in the following grades:
Materials are supplied as per ASTM A681 / DIN 1.2379 (D2) / DIN 1.2344 (H13) specifications.
MASTER TECHNICAL DATA SHEET – TOOL STEEL HEX BARS
| Parameter | D2 Tool Steel | H13 Tool Steel |
|---|---|---|
| Product Form | Hexagonal Bars (Solid) | Hexagonal Bars (Solid) |
| Standard | ASTM A681 / DIN 1.2379 | ASTM A681 / DIN 1.2344 |
| Material Type | High Carbon, High Chromium Cold Work Tool Steel | Hot Work Chromium Tool Steel |
| Manufacturing Process | Hot Rolled / Forged / Bright (Cold Drawn) | Hot Rolled / Forged / Bright (Cold Drawn) |
| Surface Finish | Black / Bright | Black / Bright |
| Supply Condition | Annealed / Hardened & Tempered | Annealed / Hardened & Tempered |
| Carbon (C) % | 1.40 – 1.60 | 0.32 – 0.45 |
| Chromium (Cr) % | 11.0 – 13.0 | 4.75 – 5.50 |
| Molybdenum (Mo) % | 0.70 – 1.20 | 1.10 – 1.75 |
| Vanadium (V) % | 0.70 – 1.20 | 0.80 – 1.20 |
| Silicon (Si) % | ≤0.60 | 0.80 – 1.20 |
| Tensile Strength (MPa) | ≥1800 (H&T) | ≥1600 (H&T) |
| Hardness (Annealed) | 220 – 255 HB | 190 – 230 HB |
| Hardness (Hardened) | 58 – 62 HRC | 44 – 52 HRC |
| Wear Resistance | Very High | High |
| Hot Strength | Moderate | Excellent |
| Toughness | Moderate | High |
| Machinability | Moderate (Annealed) | Good (Annealed) |
| Weldability | Poor | Limited (Preheat Required) |
| Standard AF Sizes (mm) | 8 – 60 | 8 – 60 |
| Approx. Weight @12 mm AF | 0.98 kg/m | 0.98 kg/m |
| Approx. Weight @20 mm AF | 2.72 kg/m | 2.72 kg/m |
| Approx. Weight @30 mm AF | 6.11 kg/m | 6.11 kg/m |
| Standard Length | 3 m / 6 m | 3 m / 6 m |
| Custom Cut Length | Available | Available |
| Dimensional Tolerance | As per ASTM A681 | As per ASTM A681 |
| Heat Treatment Options | Annealed / H&T | Annealed / H&T |
| Testing | Chemical, Mechanical, Hardness | Chemical, Mechanical, Hardness |
| Certification | EN 10204 3.1 | EN 10204 3.1 |
| HSN / HS Code | 7228 | 7228 |
| Typical Applications | Dies, Punches, Blades | Die Casting, Hot Forging |
| Packaging | Bundled / Wooden Crates | Bundled / Wooden Crates |
When selecting tool steel hex bars, the following parameters should be evaluated:
Proper grade selection ensures tool life, dimensional stability, and operational reliability.
In India, tool steel hex bars are widely used by tool rooms, die manufacturers, mould makers, and precision machining units, particularly in industrial regions such as Pune, Bengaluru, Chennai, and Ahmedabad.
Export demand is driven by automotive tooling, die casting, and industrial manufacturing sectors requiring ASTM and DIN-compliant tool steel products.
Tool steel hex bars supplied by Inox Steel India are used in applications requiring high hardness, wear resistance, and dimensional stability under working conditions. Selection of grade depends on tooling type, operating temperature, and service life requirements.
Tool steel hex bars are supplied in standard metric hex bar sizes as per ASTM and DIN tolerances.
(Refer to standard hex bar sizes in mm PDF and hex bar size chart in mm India for detailed size and weight information.)
| AF Size (mm) | Approx. Weight (kg/m) |
|---|---|
| 8 | 0.43 |
| 10 | 0.68 |
| 12 | 0.98 |
| 16 | 1.74 |
| 20 | 2.72 |
| 25 | 4.25 |
| 30 | 6.11 |
| 40 | 10.86 |
| 50 | 16.90 |
| 60 | 24.60 |
Weights are indicative and may vary based on tolerance and heat-treatment condition.
| Grade | Approx. Price Range (INR / kg) |
|---|---|
| D2 | ₹ 220 – ₹ 320 |
| H13 | ₹ 260 – ₹ 380 |
Prices depend on size, heat-treatment condition (annealed / hardened & tempered), finish, quantity, and prevailing market conditions.
HSN Code: 7228
Applicable for alloy and tool steel bars under Indian and international trade classification.
Tool steel hex bars are inspected and tested to ensure compliance with applicable standards.
Material can be supplied with EN 10204 3.1 certification on request.
Inox Steel India supplies tool steel hex bars with controlled metallurgy, standard compliance, and documented traceability. Material is processed and inspected to meet tooling and die-making requirements for cold-work and hot-work applications.
Key supply features:
Tool steel hex bars are supplied to the following industries:
Grade and heat-treatment condition are selected based on tooling type, operating temperature, and wear requirements.
Tool steel hex bars are packed and dispatched as per standard industrial and export practices.
Dispatch supported through JNPT (Mumbai), Mundra, and Hazira ports for export shipments.
Whether you require D2 hex bars for cold-work tooling or H13 hex bars for hot-work applications, our team will assist with grade selection, pricing, and delivery schedules.
52-A, Mulji Thackersi Bldg, Islampura Street, Shop No. 10, Near Alankar Cinema, Mumbai – 400 004
alloy@inoxsteelindia.in
+91 9930796690
Standard across-flat sizes range from 8 mm to 60 mm. Other sizes can be supplied on request. Yes, tool steel hex bars can be supplied in annealed or hardened & tempered condition. The applicable HSN code is 7228. Yes, custom cut lengths are available as per requirement. Material can be supplied with EN 10204 3.1 test certification on request. What are the standard hex bar sizes in mm?
Are heat-treated tool steel hex bars available?
What is the HSN code for tool steel hex bars?
Are custom cut lengths available?
Is test certification provided with supply?
Manufacturer and supplier of tool steel hex bars in D2 and H13 grades. Standard and custom sizes supplied across India by Inox Steel India.