H13 H11 H21 Hex Bars Manufacturer, Stockist and Exporter
H13, H11, and H21 Hex Bars are high-quality tool steels widely used in die, mold, and forging applications. These hexagonal bars offer superior hardness, wear resistance, and thermal stability. They are designed to withstand high-pressure operations while maintaining dimensional accuracy. Manufacturers prefer these hex bars for cold and hot work tooling. Their consistent composition ensures uniform mechanical properties across different batches. Available in various sizes, they are easily machinable and suitable for custom fabrication.
H13 Hex Bars are chromium-molybdenum hot work tool steels known for excellent toughness and heat resistance. H11 Hex Bars are similar but offer slightly higher hardenability for medium to high-temperature applications. H21 Hex Bars are designed for high-temperature die casting and extrusion, providing high thermal fatigue resistance. These bars are ideal for applications where thermal cycling can cause cracking in lesser steels. Precision in surface finish and dimensional stability is critical for tooling efficiency. All three grades undergo rigorous quality testing to meet industrial standards.
Toolmakers favor H13, H11, and H21 Hex Bars due to their balanced combination of hardness and ductility. They provide excellent resistance against abrasive wear and deformation under heavy loads. Heat treatment processes, including quenching and tempering, enhance their mechanical performance. These bars maintain excellent toughness even after prolonged exposure to high temperatures. H13, H11, and H21 Hex Bars are suitable for forging dies, extrusion tools, and molding dies. Their versatility reduces the need for multiple steel types in a single workshop. Each bar’s precise geometry ensures compatibility with automated machinery.
Worldwide H13 H11 H21 Hex Bars Manufacturer, Stockist and Exporter
The chemical composition of H13, H11, and H21 Hex Bars includes carbon, chromium, molybdenum, and vanadium as primary alloying elements. These elements provide enhanced wear resistance and thermal stability. H13 is particularly rich in chromium and molybdenum for better hot strength. H11 balances toughness and hardness for medium-temperature operations. H21 is tailored to resist thermal fatigue and is used in die casting molds exposed to rapid heating and cooling. Trace elements are carefully controlled to prevent brittleness and cracking. The uniform composition ensures predictable performance during machining and heat treatment.
Mechanical properties of these hex bars are critical for tooling and industrial applications. H13, H11, and H21 offer tensile strengths ranging from 900–1200 MPa. Hardness after tempering typically ranges between 45–52 HRC, depending on heat treatment. Their impact toughness is optimized to reduce chipping and cracking during heavy-duty operations. Thermal conductivity and expansion coefficients are consistent across these grades to minimize distortion. These properties make them ideal for repeated thermal cycling. Standard sizes and hex dimensions ensure easy integration into dies and molds.
H13, H11, and H21 Hex Bars are widely used in automotive, aerospace, and heavy machinery sectors. Hot forging, die casting, extrusion dies, and mold bases benefit from their high-temperature performance. They are suitable for both manual and CNC machining due to their excellent workability. The uniform grain structure prevents premature wear and extends tool life. Surface treatments like nitriding can further enhance hardness and corrosion resistance. Industries requiring precision tooling rely on these hex bars for consistent performance. Their durability significantly reduces maintenance costs and downtime.
Choosing the right grade depends on application temperature, wear requirements, and required toughness. H13 is preferred for general-purpose hot work tools. H11 is ideal for medium-temperature dies and punches. H21 excels in high-temperature die casting applications. Suppliers provide these bars in various lengths and diameters, meeting customer specifications. Custom heat treatment can be applied to achieve target hardness and toughness. Availability in hexagonal form ensures easy handling, storage, and machining. H13, H11, and H21 Hex Bars remain an industrial standard for reliable, high-performance tooling.
H13 H11 H21 Hex Bars
Specifications
| Property | H13 | H11 | H21 |
|---|---|---|---|
| Standard | DIN 17350 / AISI H13 | DIN 17350 / AISI H11 | DIN 17350 / AISI H21 |
| Type | Hot Work Tool Steel | Hot Work Tool Steel | High-Temperature Tool Steel |
| Application | Forging dies, extrusion dies, hot stamping tools | Medium temperature dies, punches, forging tools | Die casting molds, high-temp extrusion, hot stamping |
| Form | Hex Bars | Hex Bars | Hex Bars |
| Delivery Condition | Annealed / Prehardened | Annealed / Prehardened | Annealed / Prehardened |
| Heat Treatment | Quenched & Tempered | Quenched & Tempered | Quenched & Tempered |
| Hardness | 45–52 HRC (after tempering) | 45–50 HRC (after tempering) | 46–52 HRC (after tempering) |
| Size Range | 10mm–150mm (hex width) | 10mm–150mm (hex width) | 10mm–150mm (hex width) |
| Length | 1000–3000 mm | 1000–3000 mm | 1000–3000 mm |
Chemical Composition (Typical Ranges)
| Element | H13 | H11 | H21 |
|---|---|---|---|
| Carbon (C) | 0.32–0.45 | 0.32–0.45 | 0.38–0.45 |
| Chromium (Cr) | 4.75–5.50 | 4.75–5.50 | 4.75–5.50 |
| Molybdenum (Mo) | 1.10–1.75 | 1.20–1.75 | 1.25–1.75 |
| Vanadium (V) | 0.80–1.20 | 0.80–1.20 | 0.90–1.20 |
| Manganese (Mn) | 0.20–0.50 | 0.20–0.50 | 0.20–0.50 |
| Silicon (Si) | 0.80–1.20 | 0.80–1.20 | 0.80–1.20 |
| Phosphorus (P) | ≤0.030 | ≤0.030 | ≤0.030 |
| Sulfur (S) | ≤0.030 | ≤0.030 | ≤0.030 |
Mechanical Properties
| Property | H13 | H11 | H21 |
|---|---|---|---|
| Tensile Strength (MPa) | 1000–1200 | 950–1150 | 950–1200 |
| Yield Strength (MPa) | 850–1000 | 800–950 | 850–1000 |
| Hardness (HRC) | 45–52 (after tempering) | 45–50 (after tempering) | 46–52 (after tempering) |
| Elongation (%) | 10–15 | 12–16 | 10–14 |
| Impact Toughness (J) | 40–50 | 35–45 | 38–48 |
| Thermal Conductivity (W/m·K) | 28–30 | 28–30 | 28–30 |
| Coefficient of Thermal Expansion (10⁻⁶/K) | 11.5–12.0 | 11.5–12.0 | 11.5–12.0 |
| Density (g/cm³) | 7.8 | 7.8 | 7.8 |
Dimension Chart
| Hex Width (mm) | Length (mm) | Weight (kg/m) | H13 | H11 | H21 |
|---|---|---|---|---|---|
| 10 | 1000–3000 | 0.62 | ✓ | ✓ | ✓ |
| 20 | 1000–3000 | 2.47 | ✓ | ✓ | ✓ |
| 30 | 1000–3000 | 5.56 | ✓ | ✓ | ✓ |
| 40 | 1000–3000 | 9.88 | ✓ | ✓ | ✓ |
| 50 | 1000–3000 | 15.42 | ✓ | ✓ | ✓ |
| 60 | 1000–3000 | 22.18 | ✓ | ✓ | ✓ |
| 80 | 1000–3000 | 39.42 | ✓ | ✓ | ✓ |
| 100 | 1000–3000 | 61.8 | ✓ | ✓ | ✓ |
| 120 | 1000–3000 | 89.0 | ✓ | ✓ | ✓ |
Equivalent H21s
| Standard | Equivalent Grade |
|---|---|
| AISI / SAE | H21 |
| DIN | 1.2344 |
| JIS | SKD6 |
| EN | X40CrMoV5-1 |
| GB (China) | Cr12MoV1 |
| AFNOR (France) | 55NiCrMoV7 |
We offer a wide range of H13 H11 H21 Hex Bars in various diameters, lengths, and finishes. Our bars are supplied with hot-rolled, cold-drawn, and centerless ground finishes, ensuring superior surface quality and dimensional accuracy. Custom cutting, polishing, and packaging services are also available to meet specific project requirements.
With a strong inventory, reliable distribution network, and dedicated customer support, Shakti Forge India continues to strengthen its position as a leading H13 H11 H21 Hex Bars manufacturer, stockist, and exporter. Our products serve both domestic industrial hubs and global industries, delivering high-performance H13 H11 bars that meet stringent engineering and quality standards.
Frequently Asked Questions (FAQs)
Cities we have supplied our products to
Mumbai, Delhi, Bengaluru(Bangalore), Hyderabad, Chennai, Kolkata, Pune, Ahmedabad, Surat, Vadodara, Rajkot, Nagpur, Indore, Bhopal, Jaipur, Kanpur, Lucknow, Agra, Varanasi, Amritsar, Chandigarh, Mysuru (Mysore), Udaipur, Jodhpur, Visakhapatnam, Coimbatore, Madurai, Kochi, Thiruvananthapuram, Mangalore, Nashik, Kolhapur, Chandrapur, Akola, Vilayat, Somnath, Dahej, Narmada, Ankleshwar, Navsari, Valsad, Rajpipla, Veraval,Kovvur, Andra Pradesh,Karwar, Karnataka,Kosamba, Gujarat, Vishakapatnam, Shahad, Pondicherry, Kakkinada, Pradesh, Nagda, Madhya Pradesh,Harihar, Karnataka, Tuticorin, Tamilnadu, Trivandrum, KeralaKurnool, Rourkela, Hindupur, Orissa, Renukoot, Uttar Morbi, Kerala ,Himachal, Dehradun, Visakhapatnam ,Jamnagar, Kozhikode, Ludhiana,Latur, Nanded, Vijaywada, Alwar, Bareilly, Bikaner, Andheri, Marol, Taloja, Turbhe, TTC (Thane-Belapur), Pimpri-Chinchwad, Chakan, Talegaon, Ranjangaon, Jejuri, Baramati, Satpur, Ambad, Sinnar, Igatpuri, Shendra, Waluj, Chikalthana, Paithan, Hingna, Butibori, Kalmeshwar, Umred, Shiroli, Kagal, Gokul Shirgaon, Akkalkot, Chincholi, Lote-Parshuram, Dombivli, Ambernath, Mahad, Roha, Palghar, Tarapur (Boisar)
Cities we have supplied our products to
South Korea, Africa, Sri Lanka, Syria, Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine, United Kingdom, Arab Emirates (UAE), Uzbekistan, Vietnam, Yemen, France, Germany, Greece, Oman, Colombia, Portugal, Japan, Lithuania, Macau, Mongolia, Qatar, Ireland, Malaysia, Bangladesh, Russia, Iran, Jordan, Singapore, Bulgaria, Poland, Denmark, Nigeria, Gambia, Indonesia, Finland, Argentina, Chile, Spain, Peru, Kuwait, India, Saudi Arabia, Slovakia, Slovenia, Sweden, Switzerland, Bahrain, the Netherlands, United Kingdom, Mexico, Bulgaria, Spain, France, Germany, Colombia, Brazil, Saudi Arabia, Iraq, Iran, Sudan, Libya, Tanzania, Nigeria, New Zealand, Paris, Switzerland
Applications of H13 H11 H21 Hex Bars
- Oil & Gas Industry – pipelines, offshore rigs, valves, and fittings
- Chemical Processing Plants – heat exchangers, reactors, and storage vessels
- Marine & Shipbuilding – propeller shafts, seawater systems, and pumps
- Aerospace – jet engines, turbine blades, and structural components
- Power Generation – nuclear plants, boilers, and steam generators
- Automotive – exhaust systems, sensors, and performance parts
- Pharmaceutical & Food Industry – equipment requiring hygiene and corrosion resistance
- Construction & Infrastructure – high-strength fasteners, joints, and supports