AISI 4140 Round Bar exporter in Qatar
AISI 4140 Round Bar exporter in Qatar plays a crucial role in supplying high-strength alloy steel bars to various industrial sectors. Known for its excellent toughness, wear resistance, and fatigue strength, AISI 4140 is a chromium-molybdenum alloy steel widely used in manufacturing components that demand durability and performance. The round bar form offers versatility for machining, forging, and fabrication, making it an essential raw material for heavy-duty applications.
This grade of steel typically features a balanced chemical composition that enhances hardenability and mechanical properties. With tensile strengths ranging from 655 to 850 MPa and good impact resistance, these bars are ideal for parts subjected to high stress and dynamic loads. Precision dimensional tolerances and surface finish quality ensure compatibility with stringent engineering requirements, catering to the needs of automotive, aerospace, and construction industries.
Industries in Qatar benefit from the strategic export capabilities of suppliers who maintain consistent stock levels and offer customized sizing options. Whether it is for manufacturing shafts, gears, bolts, or crankshafts, the availability of heat-treated and normalized AISI 4140 round bars supports diverse fabrication processes. Export readiness is further enhanced by adherence to international standards such as ASTM A29 and ISO certifications, ensuring reliable quality and traceability.
Furthermore, logistical expertise in handling, packaging, and timely delivery underpins the export operations, allowing industrial buyers to integrate these alloy steel bars seamlessly into their supply chains. The focus on export compliance, including documentation and customs facilitation, makes sourcing from Qatar a competitive choice for global manufacturers seeking robust engineering materials.
Overall, suppliers specializing in this alloy steel round bar offer technical support and material test reports, enabling engineers and procurement teams to make informed decisions. The combination of superior material characteristics and efficient export processes underscores the value proposition for businesses requiring high-performance steel components from Qatar.
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 4140 Round 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 4140 Round Bar exporter in Qatar
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4140 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 4140 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 4140 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 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 4140 Round Bar
- ✔ High tensile strength and toughness
- ✔ Excellent hardenability for various heat treatment processes
- ✔ Good machinability and weldability
- ✔ Corrosion-resistant surface treatments available
- ✔ Versatile applications in automotive and machinery components
- ✔ Adherence to international quality standards
Technical Overview of AISI 4140 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| AISI 4140 Round Bar | C: 0.38-0.43%, Cr: 0.9-1.2%, Mo: 0.15-0.25%, Fe: Balance | Used in the manufacturing of gears, axles, and various structural applications requiring high strength and toughness. | ASTM A29, ASTM A322, AMS 6345 |
| AISI 4140 Round Bar | C: 0.38-0.43%, Cr: 0.9-1.2%, Mo: 0.15-0.25%, Fe: Balance | Ideal for applications in oil and gas drilling, automotive components, and heavy machinery. | SAE J403, ISO 683-17 |
| AISI 4140 Round Bar | C: 0.38-0.43%, Cr: 0.9-1.2%, Mo: 0.15-0.25%, Fe: Balance | Commonly utilized for heat-treated applications requiring high wear resistance. | ASTM A829 |
Specifications Table
| Material | AISI 4140 |
|---|---|
| Grades | 4140 |
| Standard | ASTM A829 |
| Size Range | 10 mm to 300 mm diameter |
| Length | Up to 6000 mm |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| AISI 4140 Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Used in manufacturing gears, crankshafts, and other high-stress applications. |
| AISI 4140QT Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Ideal for high-strength applications where toughness and wear resistance are needed. |
| AISI 4140 Prehard Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Commonly used in hydraulic cylinders, shafts, and axles. |
| AISI 4140 Normalized Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Suitable for applications requiring good machinability and strength. |
| AISI 4140 Alloy Steel Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Utilized in the manufacture of high-load components and tool manufacturing. |
Available Sizes of AISI 4140 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 20 | 25 |
| 30 | 35 |
| 40 | 45 |
| 50 | 55 |
| 60 | 65 |
| 70 | 75 |
| 80 | 90 |
| 100 | 110 |
| 120 | 130 |
| 140 | 150 |
Chemical Properties of AISI 4140
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.75 - 1.00 |
| Silicon (Si) | 0.15 - 0.40 |
| Chromium (Cr) | 0.80 - 1.10 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.04 max |
| Iron (Fe) | Balance |
Mechanical Properties of AISI 4140
| Property | Value |
|---|---|
| Tensile Strength (MPa) | 655 - 850 |
| Yield Strength (MPa) | 415 - 620 |
| Elongation (%) | 20 - 30 |
| Reduction of Area (%) | 50 - 60 |
| Hardness (HB) | 207 - 285 |
AISI 4140 Round Bar – Physical & Thermal Properties
Density of AISI 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
Melting Point of AISI 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1420 - 1540 °C | 2600 - 2800 °F |
Specific Heat of AISI 4140 Round Bar
| Specific Heat of AISI 4140 Round Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 486 | 20 - 100 | Annealed |
| 460 | 100 - 300 | Tempered |
| 500 | 300 - 600 | Quenched |
Electrical Resistivity of AISI 4140 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | Quenched and Tempered |
| 80 | 100 | |
| 85 | 200 | |
| 90 | 300 | |
| 95 | 400 | |
Equivalent of AISI 4140
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A829 | 41Cr4 | G41400 |
| EN 10083-3 | 42CrMo4 | 1.7225 |
Manufacturing Process & Heat Treatment of AISI 4140 Round Bar
Annealing
The annealing process for AISI 4140 round bars involves heating the material to a temperature of approximately 850-900°C, followed by slow cooling in the furnace. This process relieves internal stresses, refines the grain structure, and improves machinability, making it easier to work with during subsequent manufacturing operations.
Forging
Forging of AISI 4140 round bars is typically performed at temperatures ranging from 1100-1250°C. This hot working process enhances the mechanical properties of the steel by refining the grain structure and achieving a uniform distribution of carbides. The forged bars are then allowed to cool in air or in a controlled environment to prevent warping.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 820-860 | Oil or Water | To increase hardness and strength |
| Tempering | 400-600 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 600-650 | Air | To relieve internal stresses after hardening |
The manufacturing and heat treatment processes of AISI 4140 round bars are critical in achieving the desired mechanical properties for various industrial applications, ensuring reliability and performance in demanding environments.
Various Types
AISI 4140 Round Bar - Hot Rolled
- Diameter: 20mm to 300mm
- Condition: Hot Rolled
- Applications: Automotive components, Gear shafts, Axles
AISI 4140 Round Bar - Cold Drawn
- Diameter: 10mm to 200mm
- Condition: Cold Drawn
- Applications: Precision machining, Structural components
AISI 4140 Round Bar - Annealed
- Diameter: 25mm to 150mm
- Condition: Annealed
- Applications: Welding, Fabrication, Heat treatment
AISI 4140 Round Bar - Quenched and Tempered
- Diameter: 15mm to 250mm
- Condition: Quenched and Tempered
- Applications: High-stress applications, Tooling, Machinery
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 4140 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| AISI 4140 | 3 mm | $2.50 – $2.70 | ₹207 – ₹223 |
| AISI 4140 | 6 mm | $2.45 – $2.65 | ₹202 – ₹218 |
| AISI 4140 | 10 mm | $2.40 – $2.60 | ₹198 – ₹214 |
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 4140 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 4140 Steel Suppliers in Qatar
- 4140 Round Bar Price in Qatar
- Heat Treatment of AISI 4140
- 4140 Steel Properties and Applications
- Best AISI 4140 Exporters in Middle East
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.