AISI 4340 Round Bar exporter in Qatar
AISI 4340 Round Bar exporter in Qatar plays a crucial role in supplying high-strength alloy steel bars known for their toughness, fatigue resistance, and excellent mechanical properties. These bars are manufactured using a nickel-chromium-molybdenum alloy, making them ideal for demanding industrial applications. The round bars conform to international standards, ensuring consistent quality and reliability for engineering and manufacturing sectors across the region.
The material boasts a tensile strength ranging from 930 to 1080 MPa and offers superior hardness and ductility after heat treatment processes such as quenching and tempering. This makes the alloy steel round bars suitable for components subjected to high stress and impact, such as gears, shafts, and crankshafts. Their versatility extends to aerospace, automotive, and heavy machinery industries, where durability and performance are paramount.
Exporters in Qatar ensure that the round bars undergo rigorous quality checks, including chemical composition analysis and mechanical testing, to meet customer specifications and international standards like ASTM A29. The bars are available in various diameters and lengths, providing flexibility for custom orders. Additionally, surface finishes and certifications can be tailored to client requirements, enhancing their application scope.
With Qatarβs strategic location and advanced logistics infrastructure, the export readiness of these alloy steel bars is optimized for timely delivery to global markets. Suppliers maintain adequate inventory and leverage efficient packaging solutions to protect the material during transit. This commitment to quality and service supports manufacturers worldwide in sourcing reliable AISI 4340 round bars for their critical projects.
Our Approvals | Third Party Inspection
Lead Time
2β7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why AISI 4340 Round Bar exporter in Qatar Are Preferred by Global Buyers
- β Factory Pricing: Direct manufacturer rates with bulk stock
- β Certified Quality: ISO & 3rd-party tested, EN 10204 certified
- β Export-Ready: Sea-worthy packaging for on-time delivery
- β Fast RFQs: Quick quotes for custom sizes & quantities
- β 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 Qatar
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4340 Round Bar exporter in Qatar
- 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 Qatar
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 Qatar
| 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 15β20% 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
- β High tensile strength and toughness
- β Excellent fatigue resistance
- β Superior machinability and weldability
- β Good ductility and formability
- β Corrosion resistant when properly treated
- β Available in various sizes and specifications
Technical Overview of AISI 4340 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| AISI 4340 Round Bar | Carbon 0.38-0.43%, Manganese 0.60-0.90%, Chromium 0.70-0.90%, Nickel 1.65-2.00%, Molybdenum 0.15-0.25% | Used in aerospace, automotive, and heavy machinery applications requiring high strength and toughness. | AISI, ASTM, SAE |
| AISI 4340 Round Bar | Carbon 0.38-0.43%, Manganese 0.60-0.90%, Chromium 0.70-0.90%, Nickel 1.65-2.00%, Molybdenum 0.15-0.25% | Ideal for high-stress applications, such as gears, shafts, and bolts. | AISI, ASTM, SAE |
| AISI 4340 Round Bar | Carbon 0.38-0.43%, Manganese 0.60-0.90%, Chromium 0.70-0.90%, Nickel 1.65-2.00%, Molybdenum 0.15-0.25% | Commonly used in the manufacturing of aircraft components and structural parts. | AISI, ASTM, SAE |
Specifications Table
| Material | AISI 4340 |
|---|---|
| Grades | 4340 |
| Standard | ASTM A29/A29M |
| Size Range | 0.5 inch to 12 inch diameter |
| Length | Up to 20 feet |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| AISI 4340 Round Bar | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Aerospace components, automotive gears, high-strength fasteners |
| AISI 4340 Round Bar - QT | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | High-strength structural applications, heavy machinery parts |
| AISI 4340 Round Bar - Nitrided | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Wear-resistant components, high-stress applications |
| AISI 4340 Round Bar - Hot Rolled | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | General engineering applications, shafts, and axles |
| AISI 4340 Round Bar - Cold Drawn | Carbon: 0.38-0.43%, Manganese: 0.60-0.90%, Chromium: 0.70-0.90%, Nickel: 1.65-2.00%, Molybdenum: 0.15-0.25% | Precision machining, high-tensile applications |
Available Sizes of AISI 4340 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 20 |
| 25 | 30 |
| 35 | 40 |
| 45 | 50 |
| 55 | 60 |
| 65 | 70 |
| 75 | 80 |
| 85 | 90 |
| 95 | 100 |
| 110 | 120 |
Chemical Properties of AISI 4340
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.60 - 0.90 |
| Silicon (Si) | 0.15 - 0.40 |
| Chromium (Cr) | 0.70 - 0.90 |
| Nickel (Ni) | 1.65 - 2.00 |
| Molybdenum (Mo) | 0.20 - 0.30 |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.04 max |
Mechanical Properties of AISI 4340
| Property | Value |
|---|---|
| Tensile Strength | 1080 MPa (156 ksi) |
| Yield Strength | 930 MPa (135 ksi) |
| Elongation | 15% |
| Hardness (Brinell) | 331 HB |
| Modulus of Elasticity | 210 GPa (30.5 x 106 psi) |
AISI 4340 Round Bar β Physical & Thermal Properties
Density of AISI 4340 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cmΒ³ | 0.284 lb/inΒ³ |
Melting Point of AISI 4340 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1425 - 1540 Β°C | 2600 - 2800 Β°F |
Specific Heat of AISI 4340 Round Bar
| Specific Heat of AISI 4340 Round Bar | ||
|---|---|---|
| Specific Heat (J/kgΒ·K) | Temperature Range (Β°C) | Condition |
| 500 | 20 - 100 | Annealed |
| 460 | 100 - 400 | Tempered |
| 420 | 400 - 600 | Normalized |
Electrical Resistivity of AISI 4340 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (¡Ω·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | Quenched and Tempered |
| 76 | 100 | |
| 78 | 200 | |
| 80 | 300 | |
| 82 | 400 | |
Equivalent of AISI 4340
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 1.6511 | G43400 |
| SAE J403 | 1.6511 | G43400 |
Manufacturing Process & Heat Treatment of AISI 4340
Annealing
The annealing process for AISI 4340 involves heating the steel to a temperature range of 800-850Β°C, followed by gradual cooling. This process is essential for relieving internal stresses, improving machinability, and refining the microstructure to achieve a more uniform grain size.
Forging
Forging of AISI 4340 is typically conducted at temperatures between 1100-1250Β°C. This hot working process enhances the mechanical properties of the steel by refining the grain structure and increasing strength through deformation. The forged components are then allowed to cool gradually to room temperature.
Hardening & Tempering
| Process | Temperature Range (Β°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-900 | Oil or Water | To increase hardness and strength through martensitic transformation. |
| Tempering | 400-600 | Air | To reduce brittleness and improve toughness after hardening. |
| Stress Relieving | 600-650 | Air | To alleviate residual stresses from machining or forming processes. |
The manufacturing and heat treatment processes for AISI 4340 are critical in ensuring optimal performance characteristics for various applications, particularly in the aerospace and automotive industries.
Various Types
AISI 4340 Round Bar - Standard
- Diameter: 10mm to 300mm
- Condition: Hot Rolled, Cold Finished
- Applications: Automotive, Aerospace, Machinery
AISI 4340 Round Bar - Heat Treated
- Diameter: 20mm to 250mm
- Condition: Heat Treated
- Applications: Heavy Equipment, Structural Components
AISI 4340 Round Bar - Annealed
- Diameter: 15mm to 200mm
- Condition: Annealed
- Applications: Tooling, High Strength Applications
AISI 4340 Round Bar - Custom Sizes
- Diameter: Custom Specifications Available
- Condition: Various Conditions Available
- 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 β $5.00 | βΉ370 β βΉ410 |
| AISI 4340 | 6 mm | $4.20 β $4.80 | βΉ360 β βΉ400 |
| AISI 4340 | 10 mm | $4.00 β $4.50 | βΉ350 β βΉ370 |
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: 25β100 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.
- β Chemical composition testing
- β Mechanical tests such as tensile and hardness
- β Dimensional inspection as per standard tolerances
- β PMI, ultrasonic, and visual inspection (if required)
- β EN 10204 3.1 / 3.2 test certificates
- β Third-party inspection by SGS, TUV, BV, or Lloydβs
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 Qatar
- AISI 4340 Round Bar Price in Qatar
- 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.
- β 50+ years of industry experience in alloy steel and round bar manufacturing
- β Specialized in 4140, EN19, and 42CrMo4 high-performance round bars
- β ISO certified and TUV approved quality standards
- β Strict quality testing including ultrasonic and chemical analysis
- β Premium raw material sourcing from SAIL and JSW
- β Advanced manufacturing infrastructure with modern machinery
- β Custom-engineered solutions as per drawings and specifications
- β Global export capability with reliable delivery
- β 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.