AISI 4340 Forged Black Flat Bar exporter in Oman
AISI 4340 Forged Black Flat Bar exporter in Oman plays a crucial role in supplying high-quality alloy steel bars to various industrial sectors. Known for its exceptional toughness, strength, and fatigue resistance, AISI 4340 is a nickel-chromium-molybdenum alloy steel widely used in demanding engineering applications. The forged black finish not only enhances the materialβs surface durability but also provides a cost-effective solution for components requiring high mechanical performance.
This particular grade of flat bar is manufactured through a forging process that refines the grain structure, resulting in improved mechanical properties such as tensile strength, impact resistance, and hardness. Typically, the bars conform to international standards like ASTM A29 or equivalent, ensuring uniformity and reliability. The flat bar dimensions are customizable to meet specific project requirements, making it versatile for fabricators and manufacturers.
The applications of AISI 4340 flat bars span across heavy machinery, automotive components, aerospace parts, and oil & gas equipment. Its ability to withstand high stress and fatigue makes it ideal for critical components like shafts, gears, crankshafts, and high-strength fasteners. Additionally, the black finish provides oxidation resistance, which is beneficial in environments where corrosion protection is essential.
Exporters in Oman are equipped to handle bulk orders with efficient logistics and packaging solutions tailored for international shipment. The supply chain ensures timely delivery while maintaining the integrity of the forged bars throughout transit. Buyers can expect comprehensive documentation and quality certifications that comply with global trade standards, facilitating smooth import procedures.
For industrial buyers seeking durable and reliable alloy steel flat bars, partnering with a reputable supplier in Oman offers access to premium AISI 4340 forged products. The combination of material excellence, precision manufacturing, and export readiness makes these flat bars a preferred choice for high-performance applications worldwide.
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 Forged Black Flat Bar exporter in Oman 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 Forged Black Flat Bar exporter in Oman
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4340 Forged Black Flat Bar exporter in Oman
- 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 Oman
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 Oman
| 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 Forged Black Flat Bar
- β High tensile strength for enhanced durability
- β Excellent fatigue resistance for heavy-duty applications
- β Superior machinability for precise fabrication
- β Great weldability for diverse manufacturing processes
- β Good toughness even in low temperatures
- β Suitable for heat treatment to achieve desired properties
Technical Overview of AISI 4340 Forged Black Flat Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| 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: 1.65-2.00% | Used in high-strength applications such as gears, shafts, and aircraft components. | AISI, ASTM, SAE |
| 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: 1.65-2.00% | Ideal for applications requiring good toughness and fatigue resistance. | ASTM A829, AMS 6414 |
| 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: 1.65-2.00% | Commonly used in the automotive and aerospace industries for structural components. | ISO 683-1, JIS G4053 |
Specifications Table
| Material | AISI 4340 |
|---|---|
| Grades | 4340 |
| Standard | ASTM A829 |
| Size Range | 25 mm x 5 mm to 200 mm x 50 mm |
| Length | 6 meters |
| Form | Forged Black Flat Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| 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%) | High-strength components in aerospace, automotive, and machinery applications |
| 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%) | Heavy-duty gear shafts and axles |
| 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%) | High-stress applications such as crankshafts and connecting rods |
| 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%) | Structural parts requiring high strength and toughness |
| 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%) | Tooling and dies for manufacturing processes |
Available Sizes of AISI 4340 Forged Black Flat Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 20 x 5 | 50 x 10 |
| 25 x 5 | 60 x 10 |
| 30 x 5 | 70 x 10 |
| 35 x 5 | 80 x 10 |
| 40 x 5 | 90 x 10 |
| 45 x 5 | 100 x 10 |
| 50 x 5 | 120 x 10 |
| 60 x 5 | 150 x 10 |
| 70 x 5 | 200 x 10 |
| 80 x 5 | 250 x 10 |
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) | 0.035 max |
| Sulfur (S) | 0.040 max |
Mechanical Properties of AISI 4340 Forged Black Flat Bar
| Property | Value |
|---|---|
| Tensile Strength | 980 MPa (142 ksi) |
| Yield Strength | 850 MPa (123 ksi) |
| Elongation | 14% (in 50 mm) |
| Reduction of Area | 50% |
| Hardness (Brinell) | 329 HB |
AISI 4340 Forged Black Flat Bar β Physical & Thermal Properties
Density of AISI 4340 Forged Black Flat Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7,850 kg/mΒ³ | 490 lb/ftΒ³ |
Melting Point of AISI 4340 Forged Black Flat Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1,400 - 1,500 Β°C | 2,552 - 2,732 Β°F |
Specific Heat of AISI 4340 Forged Black Flat Bar
| Specific Heat of AISI 4340 Forged Black Flat Bar | ||
|---|---|---|
| Specific Heat (J/kgΒ·K) | Temperature Range (Β°C) | Condition |
| 490 | 20 - 100 | Room Temperature |
| 500 | 100 - 500 | Heating |
| 600 | 500 - 800 | High Temperature |
Electrical Resistivity of AISI 4340 Forged Black Flat Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (¡Ω·m) | Temperature (°C) | Treatment or Condition |
| 74 | 20 | As Forged |
| 78 | 100 | |
| 82 | 200 | |
| 86 | 300 | |
| 90 | 400 | |
Equivalent of AISI 4340 Forged Black Flat Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A829 | 34CrNiMo6 | G43400 |
| SAE J403 | 34CrNiMo6 | G43400 |
Manufacturing Process & Heat Treatment of AISI 4340 Forged Black Flat Bar
Annealing
The annealing process for AISI 4340 involves heating the steel to a temperature of approximately 850-900Β°C, followed by a slow cooling process. This heat treatment is designed to relieve internal stresses, improve ductility, and enhance machinability, preparing the material for subsequent machining and processing operations.
Forging
Forging of AISI 4340 black flat bars is performed at elevated temperatures, typically between 1000-1200Β°C. The process enhances the mechanical properties of the steel through deformation, resulting in improved strength and toughness. The forged bars are then allowed to cool at room temperature to ensure uniformity in structure.
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 | 500-650 | Air | To relieve stresses and reduce brittleness after hardening. |
| Final Tempering | 400-500 | Air | To achieve desired mechanical properties and toughness. |
The combination of forging, hardening, and tempering processes ensures that AISI 4340 forged black flat bars meet the stringent requirements for high-performance applications in various industrial sectors.
Various Types
AISI 4340 Forged Black Flat Bar - Standard
- Width: 50mm, Thickness: 10mm, Length: 6m
- Condition: Hot Rolled
- Applications: Automotive components, Machinery parts
AISI 4340 Forged Black Flat Bar - High Strength
- Width: 75mm, Thickness: 20mm, Length: 6m
- Condition: Quenched and Tempered
- Applications: Aerospace, Oil and Gas Industry
AISI 4340 Forged Black Flat Bar - Custom Sizes
- Width: Custom, Thickness: Custom, Length: Custom
- Condition: Hot Rolled
- Applications: Custom engineering projects
AISI 4340 Forged Black Flat Bar - High Toughness
- Width: 100mm, Thickness: 15mm, Length: 6m
- Condition: Normalized
- Applications: Heavy machinery, Structural components
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 | 3 mm | $3.50 β $4.00 | βΉ290 β βΉ330 |
| AISI 4340 | 6 mm | $3.80 β $4.30 | βΉ310 β βΉ350 |
| AISI 4340 | 10 mm | $4.00 β $4.50 | βΉ330 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 Forged Black Flat 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 Suppliers in Oman
- Forged Steel Flat Bars Manufacturers
- High Strength Steel Bar Exporters
- Alloy Steel Flat Bar Distributors
- Oman Steel Industry Standards
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.