AISI 4340 Forged Black Flat Bar exporter in Qatar
AISI 4340 Forged Black Flat Bar exporter in Qatar specializes in supplying high-strength alloy steel bars known for their exceptional toughness and fatigue resistance. These flat bars, manufactured through a precise forging process, exhibit superior mechanical properties ideal for demanding industrial applications. The black finish enhances surface protection, making them suitable for environments where durability and wear resistance are critical.
The material, AISI 4340, is a nickel-chromium-molybdenum alloy steel widely recognized for its excellent hardenability and impact strength. This grade is often selected for components requiring a combination of high tensile strength and good ductility. The forged flat bars undergo rigorous heat treatment to optimize their microstructure, ensuring uniform mechanical performance throughout the product.
These alloy steel flats are extensively used in sectors such as aerospace, automotive, heavy machinery, and oil & gas industries. Typical applications include shafts, gears, crankshafts, and structural components that demand reliable performance under cyclic loads and harsh operating conditions. The flat bar's dimensional stability and resistance to deformation make it a preferred choice for precision engineering tasks.
Exporters in Qatar ensure that each shipment complies with international quality standards and customer specifications. The product is available in various sizes and thicknesses, with certifications such as ISO and ASTM to guarantee traceability and conformity. Packaging and logistics are managed to maintain product integrity during transit, facilitating seamless delivery for global industrial buyers.
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 Forged Black Flat Bar exporter in Qatar 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 Forged Black Flat Bar exporter in Qatar
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4340 Forged Black Flat 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 Forged Black Flat 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 Forged Black Flat 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 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 Forged Black Flat Bar
- ✔ High tensile strength, ideal for heavy-duty applications
- ✔ Excellent impact resistance, ensuring durability in harsh environments
- ✔ Superior toughness, providing reliability in dynamic loading conditions
- ✔ Good weldability, making it easy to fabricate and assemble
- ✔ Quench and temper treatment for enhanced mechanical properties
- ✔ Versatile applications in automotive, aerospace, and machinery sectors
Technical Overview of AISI 4340 Forged Black Flat Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| AISI 4340 Forged Black Flat 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 heavy-duty applications such as automotive, aerospace, and machinery components requiring high strength and toughness. | ASTM A829, ASTM A36, SAE J403 |
| AISI 4340 Forged Black Flat 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 for gear shafts, axles, and crankshafts due to its excellent fatigue resistance. | ASTM A829, ASTM A36, SAE J403 |
| AISI 4340 Forged Black Flat 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 in the oil and gas industry, as well as military and defense sectors. | ASTM A829, ASTM A36, SAE J403 |
Specifications Table
| Material | AISI 4340 |
|---|---|
| Grades | 4340 |
| Standard | ASTM A829 |
| Size Range | 1.0" x 4.0" to 2.0" x 8.0" |
| Length | 12 feet and 20 feet |
| Form | Forged Black Flat Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| AISI 4340 Forged Black Flat Bar | C: 0.38-0.43, Mn: 0.60-0.90, Si: 0.15-0.40, Cr: 0.70-0.90, Mo: 0.15-0.25, Ni: 1.50-2.00 | High strength, aerospace components, automotive parts, and heavy-duty machinery. |
| AISI 4340 Steel Plate | C: 0.38-0.43, Mn: 0.60-0.90, Si: 0.15-0.40, Cr: 0.70-0.90, Mo: 0.15-0.25, Ni: 1.50-2.00 | Structural applications, pressure vessels, and offshore oil and gas platform components. |
| AISI 4340 Forged Round Bar | C: 0.38-0.43, Mn: 0.60-0.90, Si: 0.15-0.40, Cr: 0.70-0.90, Mo: 0.15-0.25, Ni: 1.50-2.00 | Crankshafts, gear shafts, and heavy-duty axles. |
| AISI 4340 Heat Treated Bar | C: 0.38-0.43, Mn: 0.60-0.90, Si: 0.15-0.40, Cr: 0.70-0.90, Mo: 0.15-0.25, Ni: 1.50-2.00 | High-stress applications, aerospace, and automotive engineering. |
| AISI 4340 Forged Block | C: 0.38-0.43, Mn: 0.60-0.90, Si: 0.15-0.40, Cr: 0.70-0.90, Mo: 0.15-0.25, Ni: 1.50-2.00 | Machinery components and structural applications requiring toughness and strength. |
Available Sizes of AISI 4340 Forged Black Flat Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 25x5 | 50x10 |
| 30x5 | 60x12 |
| 40x8 | 70x15 |
| 45x10 | 80x20 |
| 50x12 | 90x25 |
| 60x15 | 100x30 |
| 70x20 | 120x40 |
| 80x25 | 150x50 |
| 100x30 | 200x60 |
| 120x40 | 250x80 |
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 |
| Nickel (Ni) | 1.65 - 2.00 |
| Chromium (Cr) | 0.70 - 0.90 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Phosphorus (P) | Max 0.04 |
| Sulfur (S) | Max 0.04 |
Mechanical Properties of AISI 4340 Forged Black Flat Bar
| Property | Value |
|---|---|
| Tensile Strength | 745 MPa (108,000 psi) |
| Yield Strength | 470 MPa (68,000 psi) |
| Elongation in 50 mm | 16% |
| Reduction of Area | 50% |
| Hardness | 30 HRC |
AISI 4340 Forged Black Flat Bar – Physical & Thermal Properties
Density of AISI 4340 Forged Black Flat Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7850 kg/m³ | 0.284 lb/in³ |
Melting Point of AISI 4340 Forged Black Flat Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1425 - 1540 °C | 2600 - 2800 °F |
Specific Heat of AISI 4340 Forged Black Flat Bar
| Specific Heat of AISI 4340 Forged Black Flat Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 600 | 100 - 300 | Heating |
| 700 | 300 - 600 | High Temperature |
Electrical Resistivity of AISI 4340 Forged Black Flat Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | As Forged |
| 80 | 100 | |
| 85 | 200 | |
| 90 | 300 | |
| 95 | 400 | |
Equivalent of AISI 4340 Forged Black Flat Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 34CrNiMo6 | G43400 |
| DIN 1.6582 | 34CrNiMo6 | G43400 |
Manufacturing Process & Heat Treatment of AISI 4340 Forged Black Flat Bar
Annealing
The annealing process for AISI 4340 involves heating the material to a temperature range of 800-850°C, followed by slow cooling. This process helps to relieve internal stresses, improve ductility, and refine the grain structure, making the steel easier to machine and work with in subsequent processes.
Forging
Forging of AISI 4340 is typically performed at temperatures ranging from 1100 to 1250°C. During this process, the steel is shaped under high pressure, enhancing its mechanical properties and ensuring a uniform grain structure. The forging process also helps to eliminate any defects present in the initial material, resulting in a stronger and more reliable product.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-900 | Oil | To increase hardness and strength through martensitic transformation. |
| Tempering | 400-600 | Air | To reduce brittleness and enhance toughness after hardening. |
| Stress Relieving | 600-650 | Air | To relieve residual stresses and prevent warping during machining. |
The manufacturing and heat treatment processes of AISI 4340 are critical in achieving the desired mechanical properties, making it suitable for various high-stress applications in industries such as automotive and aerospace.
Various Types
AISI 4340 Forged Black Flat Bar - Standard
- Width: 100mm, Thickness: 20mm, Length: 6m
- Condition: Hot Rolled
- Applications: Automotive components, Machinery parts
AISI 4340 Forged Black Flat Bar - High Strength
- Width: 150mm, Thickness: 25mm, Length: 4m
- Condition: Quenched and Tempered
- Applications: Aerospace, Heavy machinery
AISI 4340 Forged Black Flat Bar - Custom Sizes
- Width: 200mm, Thickness: 30mm, Length: 5m
- Condition: Annealed
- Applications: Structural applications, Tooling
AISI 4340 Forged Black Flat Bar - Premium Quality
- Width: 120mm, Thickness: 15mm, Length: 3m
- Condition: Cold Drawn
- Applications: Oil and gas industry, High-stress applications
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 Forged Black Flat Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| AISI 4340 Forged Black Flat Bar | 3 mm | $3.20 – $3.50 | ₹265 – ₹285 |
| AISI 4340 Forged Black Flat Bar | 6 mm | $3.00 – $3.30 | ₹250 – ₹270 |
| AISI 4340 Forged Black Flat Bar | 10 mm | $2.80 – $3.10 | ₹230 – ₹250 |
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 Forged Black Flat 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 Supplier in Qatar
- Forged Steel Flat Bar Manufacturers in Qatar
- AISI 4340 Round Bar Exporter in Qatar
- High Strength Steel Bar Suppliers in Qatar
- Alloy Steel Flat Bar Exporters in Qatar
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.