AISI 4340 Round Bar exporter in Turkey
AISI 4340 Round Bar exporter in Turkey offers a reliable source for high-strength alloy steel bars known for their exceptional toughness and fatigue resistance. This nickel-chromium-molybdenum alloy steel is widely utilized in demanding industrial applications that require superior mechanical properties and durability. Manufactured under stringent quality controls, these bars meet international standards, ensuring consistent performance in critical engineering tasks.
The round bars are characterized by excellent hardenability, high tensile strength, and good ductility, making them ideal for components subjected to high stress and impact. Typically supplied in various diameters and lengths, the alloy bars undergo heat treatment processes such as quenching and tempering to achieve optimal mechanical properties. Chemical composition standards ensure low sulfur and phosphorus content, enhancing machinability and weldability.
These alloy steel bars find extensive use in aerospace, automotive, heavy machinery, and defense sectors, where reliability and performance are paramount. Common applications include crankshafts, gears, aircraft landing gear components, and structural parts that demand resistance to wear and fatigue. The versatility of this material allows it to be adapted for both precision machining and large-scale fabrication projects.
Exporters in Turkey are equipped to handle global supply chain requirements, offering customized packaging, timely delivery, and compliance with international trade regulations. Quality certifications such as ISO and ASTM accompany shipments to assure buyers of product authenticity and traceability. With advanced logistics infrastructure and competitive pricing, Turkish suppliers are well-positioned to serve industrial buyers worldwide.
By choosing Turkish manufacturers and exporters for AISI 4340 alloy steel bars, industrial buyers benefit from a combination of technical expertise and export readiness. This ensures that the material supplied not only meets stringent specifications but also arrives promptly, supporting uninterrupted production schedules across various sectors.
Our Approvals | Third Party Inspection
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why AISI 4340 Round Bar exporter in Turkey Are Preferred by Global Buyers
- ✔ Factory Pricing: Direct manufacturer rates with bulk stock
- ✔ Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- ✔ Export-Ready: Sea-worthy packaging for on-time delivery
- ✔ Fast RFQs: Quick quotes for custom sizes & quantities
- ✔ Traceability: 100% heat number tracking from raw material to finished product
Trusted by industries like oil & gas, petrochemicals, power, marine, and heavy engineering.
- Manufacturing Capacity: 500 MT / Month
- Export Experience: 50+ Years
- Countries Served: 50+
- Annual Export Volume: 5,500 MT
Table of Contents
- 1. What is AISI 4340 Round Bar exporter in Turkey
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4340 Round Bar exporter in Turkey
- 4. Why Global Buyers Source from Super Metal Manufacturing Co.
- 5. Features
- 6. Technical Overview
- 7. Specifications
- 8. Available Grades
- 9. Available Sizes
- 10. Chemical Properties
- 11. Mechanical Properties
- 12. Physical & Thermal Properties
- 13. Electrical Resistivity
- 14. Equivalent Grades
- 15. Manufacturing Process & Heat Treatment
- 16. Various Types
- 17. Applications & Uses
- 18. Industries We Serve
- 19. Latest Price List
- 20. MOQ & Payment Terms
- 21.Export Packaging & Shipping
- 22. Cities We Supply in India
- 23. Countries We Export Worldwide
- 24. Our Certifications
- 25. Quality Inspection & Testing
- 26. Our Other Product Types
- 27. People Also Search For
- 28. Frequently Asked Questions
- 29. About Super Metal Manufacturing Co.
How to Choose the Right AISI 4340 Round Bar exporter in Turkey
India is home to hundreds of manufacturers ranging from small job shops to large ISO-certified exporters. International and domestic buyers typically evaluate manufacturers based on quality compliance, production capacity, export experience, and pricing transparency.
- Certification & international standards (ASME, ASTM, EN)
- Manufacturing capability vs trading activity
- Export documentation & inspection support
- Stock availability & lead time reliability
- Past supply experience in oil & gas, EPC & heavy industries
Comparison Factors Among AISI 4340 Round Bar exporter in Turkey
| Evaluation Factor | Small Local Suppliers | Trading Companies | ISO-Certified Manufacturers |
|---|---|---|---|
| Manufacturing Control | Limited | None | Full in-house / audited partners |
| International Standards | Basic | Depends on source | ASME / ASTM / EN |
| Inspection & MTCs | Limited | Inconsistent | EN 10204 3.1 / 3.2 |
| Export Experience | Low | Medium | 50+ countries |
| Risk for EPC Projects | High | Medium | Low |
International buyers typically prefer ISO-certified manufacturers for large-scale or critical applications due to better quality control, documentation, and lower project risk.
Why Global Buyers Choose Super Metal Manufacturing Co.
Super Metal Manufacturing Co. is a trusted ISO 9001:2015 certified manufacturer and global exporter of ferro alloys and metal products, supplying consistent, high-quality materials to customers across USA, UK, Europe, Middle East, Africa, and Asia-Pacific. Our focus on quality assurance, cost efficiency, and on-time delivery makes us a preferred sourcing partner for international buyers.
| Key Advantage | Buyer Benefit |
|---|---|
| ISO 9001:2015 Certified Manufacturing | Consistent quality with documented QA systems and process control |
| ASME / ASTM / EN Compliant Products | Globally accepted standards with EN 10204 3.1 / 3.2 MTCs |
| Lower Manufacturing & Sourcing Costs | Save up to 15–20% compared to European suppliers |
| Favorable Exchange Rate Advantage | Reduced landed cost for international importers |
| In-House Testing & Inspection Facilities | Strict chemical, mechanical & dimensional quality checks |
| Bulk Stock & High Production Capacity | Fast order fulfillment and stable supply for large projects |
| Custom Sizes & Drawing-Based Manufacturing | Products manufactured exactly to buyer specifications |
| Export-Grade Packaging & Global Logistics | Sea-worthy packing, palletization & worldwide shipping support |
| Faster Global Shipping Routes | Optimized logistics for Middle East, Africa & Southeast Asia |
| Technical & After-Sales Support | Project assistance, documentation & responsive RFQ handling |
| Trusted by Global Steel & EPC Companies | Proven export experience across 50+ countries |
Features of AISI 4340 Round Bar
- ✔ High tensile strength for demanding applications
- ✔ Excellent fatigue resistance
- ✔ Good weldability and machinability
- ✔ Suitable for high-stress components
- ✔ Enhanced impact toughness
- ✔ Available in various sizes and lengths
Technical Overview of AISI 4340 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| AISI 4340 Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.80%, Mo: 0.20-0.30% | Used in heavy-duty applications such as gears, shafts, and other structural components requiring high strength and toughness. | ASTM A29, ASTM A322, SAE J403 |
| AISI 4340 Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.80%, Mo: 0.20-0.30% | Ideal for aerospace, automotive, and military applications due to its high fatigue strength. | AMS 6414, AMS 6415 |
| AISI 4340 Round Bar | C: 0.38-0.43%, Mn: 0.60-0.90%, Cr: 0.70-0.90%, Ni: 1.50-1.80%, Mo: 0.20-0.30% | Commonly utilized in the manufacturing of crankshafts, axles, and high-strength bolts. | SAE J404, ASTM A829 |
Specifications Table
| Material | AISI 4340 |
|---|---|
| Grades | 4340 |
| Standard | ASTM A29/A29M |
| Size Range | 20 mm to 300 mm diameter |
| Length | Up to 6 meters |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| AISI 4340 Round Bar | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Phosphorus: ≤0.04%, Sulfur: ≤0.05%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Used in aerospace, automotive, and heavy machinery applications due to its high strength and toughness. |
| AISI 4340 Hot Rolled Round Bar | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Phosphorus: ≤0.04%, Sulfur: ≤0.05%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Commonly used in the production of gears, shafts, and various critical components that require high fatigue strength. |
| AISI 4340 Cold Drawn Round Bar | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Phosphorus: ≤0.04%, Sulfur: ≤0.05%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Ideal for applications requiring precise dimensions and superior surface finish, such as in tooling and fixtures. |
| AISI 4340 Alloy Steel Round Bar | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Phosphorus: ≤0.04%, Sulfur: ≤0.05%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Used in high-stress applications such as crankshafts, axles, and high-strength bolts. |
| AISI 4340 Tempered Round Bar | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Phosphorus: ≤0.04%, Sulfur: ≤0.05%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Commonly employed in structural applications requiring high toughness, such as in bridges and support frames. |
Available Sizes of AISI 4340 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 12 |
| 14 | 16 |
| 18 | 20 |
| 22 | 25 |
| 28 | 30 |
| 32 | 35 |
| 38 | 40 |
| 45 | 50 |
| 55 | 60 |
| 70 | 80 |
Chemical Properties of AISI 4340
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.60 - 0.90 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Silicon (Si) | 0.15 - 0.40 |
| Nickel (Ni) | 1.65 - 2.00 |
| Chromium (Cr) | 0.70 - 0.90 |
| Molybdenum (Mo) | 0.20 - 0.30 |
Mechanical Properties of AISI 4340
| Property | Value |
|---|---|
| Tensile Strength | 745 MPa (108,000 psi) |
| Yield Strength | 434 MPa (63,000 psi) |
| Elongation | 15% |
| Hardness (Rockwell C) | 28-32 HRC |
| Modulus of Elasticity | 210 GPa (30,000 ksi) |
AISI 4340 Round Bar – Physical & Thermal Properties
Density of AISI 4340 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm3 | 0.284 lb/in3 |
Melting Point of AISI 4340 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1425 - 1540 °C | 2600 - 2800 °F |
Specific Heat of AISI 4340 Round Bar
| Specific Heat of AISI 4340 Round Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 450 | 100 - 300 | Heat Treated |
| 400 | 300 - 600 | High Temperature |
Electrical Resistivity of AISI 4340 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | Normalized |
| 78 | 100 | |
| 80 | 200 | |
| 82 | 300 | |
| 85 | 400 | |
Equivalent of AISI 4340
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 34CrNiMo6 | G43400 |
| EN 10083-3 | 42CrMo4 | 1.7220 |
Manufacturing Process & Heat Treatment of AISI 4340
Annealing
The annealing process for AISI 4340 round bars involves heating the material to a temperature range of 850-900°C, followed by a slow cooling process. This treatment helps to relieve internal stresses, improve ductility, and refine the microstructure, making the steel easier to machine and work with in subsequent processes.
Forging
Forging of AISI 4340 involves heating the steel to a temperature of approximately 1100-1200°C, followed by deformation using hammers or presses. This process enhances the mechanical properties of the steel, including strength and toughness, by refining the grain structure and aligning the fibers of the material.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 830-860 | Oil or Water | To increase hardness and strength of the steel |
| Tempering | 450-650 | Air | To reduce brittleness and relieve stresses |
| Quenching | Varies | Oil or Water | To achieve desired hardness and mechanical properties |
The combination of these processes results in AISI 4340 round bars that possess excellent strength, toughness, and wear resistance, making them suitable for various demanding applications in the steel export market.
Various Types
AISI 4340 Round Bar - Standard
- Diameter: 10mm to 300mm
- Condition: Hot Rolled, Cold Drawn
- Applications: Automotive, Aerospace, Heavy Machinery
AISI 4340 Round Bar - Quenched & Tempered
- Diameter: 20mm to 250mm
- Condition: Quenched and Tempered
- Applications: Structural components, Gear shafts
AISI 4340 Round Bar - Prehardened
- Diameter: 15mm to 200mm
- Condition: Prehardened
- Applications: Tooling, High-stress applications
AISI 4340 Round Bar - Custom Sizes
- Diameter: Custom sizes available
- Condition: Various conditions upon request
- Applications: Specialized engineering projects
Applications & Uses
- Oil & Gas Industry
- Petrochemical Plants
- Water Treatment Plants
- Pharmaceutical Industry
- Food & Beverage Industry
- Automobile Industry
Industries We Serve
Our alloys are widely used across:
- Steel Plants
- Foundries & Casting Units
- Automobile Industry
- Shipbuilding & Marine
- Oil & Gas
- Engineering Components
- Heavy Industrial Machinery
latest Price List of AISI 4340 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| AISI 4340 | 3 mm | $4.50 – $5.00 | ₹375 – ₹420 |
| AISI 4340 | 6 mm | $4.30 – $4.80 | ₹360 – ₹400 |
| AISI 4340 | 10 mm | $4.00 – $4.50 | ₹340 – ₹375 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for AISI 4340 Round Bar.
MOQ & Payment Terms
Minimum Order Quantity: 25–100 Kg depending on part size and grade.
Payment Terms: Depending On Grade and Quantity Size
Export Packaging & Shipping
- Seaworthy, fumigated wooden crates with waterproof inner lining
- Palletised packing with clear shipping marks and heat number identification
- Container stuffing supervision with loading photographs available on request
Cities We Suppllied In India
| Supply Cities | |||||
|---|---|---|---|---|---|
| Mumbai | Delhi | Pune | Chennai | Hyderabad | Bengaluru |
| Ahmedabad | Rajkot | Coimbatore | Kolkata | Bhopal | Surat |
We exported to 50+ countries worldwide.
| Exported Countries | |||||
|---|---|---|---|---|---|
| USA | UK | UAE | Germany | South Africa | Australia |
| Italy | Canada | Netherlands | Qatar | Saudi Arabia | Malaysia |
Our Certifications
We are a certified manufacturer and exporter, committed to strict quality control and international compliance standards.
Quality Inspection & Testing
At Super Metal Manufacturing Co., all products are checked through strict quality inspection and testing to meet international standards such as ASTM, ASME, EN, and DIN. This ensures consistent quality, accurate dimensions, and full material traceability.
- ✔ Chemical composition testing
- ✔ Mechanical tests such as tensile and hardness
- ✔ Dimensional inspection as per standard tolerances
- ✔ PMI, ultrasonic, and visual inspection (if required)
- ✔ EN 10204 3.1 / 3.2 test certificates
- ✔ Third-party inspection by SGS, TUV, BV, or Lloyd’s
Our quality systems support reliable supply for oil & gas, petrochemical, power, marine, and heavy engineering projects.
People Also Search For
- AISI 4340 Steel Properties
- AISI 4340 Round Bar Suppliers in Turkey
- AISI 4340 Round Bar Price List
- AISI 4340 Round Bar Manufacturers
- AISI 4340 Round Bar Applications
Frequently Asked Questions
About Super Metal Manufacturing Co.
Super Metal Manufacturing Co. is a trusted name in the metal industry since 1965, specializing in the manufacturing and export of high-quality 4140, EN19, and 42CrMo4 round bars. With decades of experience, we have built a strong reputation for delivering precision-engineered, durable, and high-performance steel products to industries worldwide.
Our company is committed to excellence through a robust quality management system and strict quality control at every stage of production. From sourcing premium raw materials from reputed suppliers like SAIL and JSW to final delivery, every product undergoes rigorous testing including tensile testing, bend and rebend tests, chemical analysis, and ultrasonic testing to ensure superior performance and reliability.
We are accredited with ISO 9001 certification and are TUV certified, reflecting our commitment to international quality standards. Our state-of-the-art manufacturing facilities, advanced machinery, and skilled workforce enable us to deliver customized solutions tailored to client requirements.
- ✔ 50+ years of industry experience in alloy steel and round bar manufacturing
- ✔ Specialized in 4140, EN19, and 42CrMo4 high-performance round bars
- ✔ ISO certified and TUV approved quality standards
- ✔ Strict quality testing including ultrasonic and chemical analysis
- ✔ Premium raw material sourcing from SAIL and JSW
- ✔ Advanced manufacturing infrastructure with modern machinery
- ✔ Custom-engineered solutions as per drawings and specifications
- ✔ Global export capability with reliable delivery
- ✔ Trusted by industries for critical and high-performance applications
Our Mission
Our mission is to deliver the highest-quality alloy steel round bars while maintaining excellence in precision, innovation, and customer satisfaction. We aim to empower industries worldwide by providing reliable and durable products that meet evolving manufacturing needs.
Our Vision
Our vision is to become a global leader in the manufacturing and export of premium-quality round bars, recognized for our product excellence, innovation, and commitment to exceeding customer expectations.