4140 Round Bar exporter in Thailand
4140 Round Bar exporter in Thailand plays a crucial role in supplying high-strength alloy steel products to global industrial markets. Known for its excellent toughness, wear resistance, and fatigue strength, 4140 steel round bars are widely used in manufacturing components that demand durability and precision. The bars undergo rigorous quality checks to meet international standards, ensuring consistent mechanical properties suitable for heavy-duty applications.
These alloy steel bars typically feature a balanced composition of chromium, molybdenum, and manganese, providing enhanced hardenability and resistance to abrasion. Available in various diameters and lengths, they are often supplied in hot-rolled or normalized conditions, allowing for further machining or heat treatment to achieve desired hardness and tensile strength. Such versatility makes them ideal for producing shafts, gears, bolts, and other critical parts in automotive, aerospace, and construction industries.
Thailandβs strategic location and robust manufacturing infrastructure enable efficient handling and shipping of these steel round bars to international buyers. Exporters ensure compliance with global trade regulations and offer customized solutions, including certifications like ASTM, DIN, and JIS, to meet the specific requirements of diverse industrial sectors. Packaging is designed to protect the material during transit, maintaining its integrity upon arrival.
Industrial purchasers seeking reliable 4140 alloy steel bars benefit from the countryβs advanced metallurgical expertise and competitive pricing. The ability to source high-quality, export-ready products with consistent chemical and mechanical properties makes Thailand a preferred supplier for businesses requiring durable and precision-engineered steel components. Ongoing investments in quality control and logistics further enhance the export capabilities of local manufacturers.
Our Approvals | Third Party Inspection
Lead Time
2β7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why 4140 Round Bar exporter in Thailand 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 4140 Round Bar exporter in Thailand
- 2. How to Choose the Right Manufacturer
- 3.Comparison of 4140 Round Bar exporter in Thailand
- 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 4140 Round Bar exporter in Thailand
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 4140 Round Bar exporter in Thailand
| 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 4140 Round Bar
- β High tensile strength for demanding applications
- β Excellent wear resistance, ideal for tooling and machinery
- β Good machinability, facilitating easy fabrication
- β Versatile alloy suitable for various industries
- β Heat treatable for enhanced properties
- β Available in various sizes and finishes to meet specific requirements
Technical Overview of 4140 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| 4140 Round Bar | C: 0.38-0.43%, Cr: 0.9-1.2%, Mo: 0.15-0.25%, Fe: Balance | Used in high-stress applications such as shafts, gears, and automotive components | ASTM A829, AISI 4140 |
| 4140 Round Bar | C: 0.38-0.43%, Cr: 0.9-1.2%, Mo: 0.15-0.25%, Fe: Balance | Ideal for manufacturing machinery parts and structural components | SAE J403, AMS 6345 |
| 4140 Round Bar | C: 0.38-0.43%, Cr: 0.9-1.2%, Mo: 0.15-0.25%, Fe: Balance | Commonly used in oil and gas industry for drill rods and casing | API 5CT, API 5L |
Specifications Table
| Material | 4140 Alloy Steel |
|---|---|
| Grades | 4140, 4140H |
| Standard | ASTM A829, ASME SA829 |
| Size Range | 0.5 inch to 12 inch diameter |
| Length | Up to 20 feet |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| 4140 Round Bar | Carbon: 0.38-0.43%, Chromium: 0.8-1.1%, Molybdenum: 0.15-0.25% | Manufacturing of high-stress components, such as gears and shafts |
| 4140 HT Round Bar | Carbon: 0.38-0.43%, Chromium: 0.8-1.1%, Molybdenum: 0.15-0.25% | Used in high-strength applications, including aerospace and automotive |
| 4140 Q&T Round Bar | Carbon: 0.38-0.43%, Chromium: 0.8-1.1%, Molybdenum: 0.15-0.25% | Ideal for heavy-duty machinery and structural components |
| 4140 Annealed Round Bar | Carbon: 0.38-0.43%, Chromium: 0.8-1.1%, Molybdenum: 0.15-0.25% | Suitable for components requiring machining and forming |
| 4140 Modified Round Bar | Carbon: 0.38-0.43%, Chromium: 0.8-1.1%, Molybdenum: 0.15-0.25% | Used in applications demanding enhanced toughness and wear resistance |
Available Sizes of 4140 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 20 |
| 25 | 30 |
| 35 | 40 |
| 45 | 50 |
| 55 | 60 |
| 65 | 70 |
| 75 | 80 |
| 90 | 100 |
| 110 | 120 |
| 130 | 140 |
Chemical Properties of 4140 Round Bar
| 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) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Iron (Fe) | Balance |
Mechanical Properties of 4140 Round Bar
| Property | Value |
|---|---|
| Tensile Strength | 655 MPa (95 ksi) |
| Yield Strength | 415 MPa (60 ksi) |
| Elongation | 21% |
| Hardness (Rockwell C) | 28 - 32 HRC |
| Modulus of Elasticity | 200 GPa (29,000 ksi) |
4140 Round Bar β Physical & Thermal Properties
Density of 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cmΒ³ | 0.284 lb/inΒ³ |
Melting Point of 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1420 - 1540 Β°C | 2600 - 2800 Β°F |
Specific Heat of 4140 Round Bar
| Specific Heat of 4140 Round Bar | ||
|---|---|---|
| Specific Heat (J/kgΒ·K) | Temperature Range (Β°C) | Condition |
| 460 | 20 - 100 | Room Temperature |
| 500 | 100 - 500 | Heat Treatment |
| 520 | 500 - 700 | High Temperature |
Electrical Resistivity of 4140 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (¡Ω·m) | Temperature (°C) | Treatment or Condition |
| 70 | 20 | As-rolled |
| 75 | 100 | |
| 80 | 200 | |
| 85 | 300 | |
| 90 | 400 | |
Equivalent of 4140 Round Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 1.7225 | G41400 |
| EN 10083-3 | 42CrMo4 | 1.7225 |
Manufacturing Process & Heat Treatment of 4140 Round Bar
Annealing
Annealing of 4140 round bars involves heating the steel to a temperature range of 850Β°C to 900Β°C, followed by slow cooling in a furnace. This process reduces hardness, relieves internal stresses, and improves machinability, making the steel easier to work with in subsequent manufacturing operations.
Forging
The forging process for 4140 round bars is conducted at temperatures between 1100Β°C and 1250Β°C. This hot working process enhances the mechanical properties of the steel, including strength and toughness, by refining the grain structure and promoting a uniform distribution of microstructural phases.
Hardening & Tempering
| Process | Temperature Range (Β°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850 - 900 | Oil | To increase hardness and strength through martensitic transformation. |
| Tempering | 400 - 700 | Air | To reduce brittleness and relieve stresses while maintaining hardness. |
| Stress Relieving | 600 - 650 | Furnace | To eliminate residual stresses from the manufacturing process. |
The combination of these processes ensures that 4140 round bars possess the desired mechanical properties for high-performance applications, making them suitable for various industrial uses.
Various Types
4140 Round Bar - Standard
- Diameter: 25mm to 300mm
- Condition: Hot Rolled, Annealed
- Applications: Machinery components, Automotive parts
4140 Round Bar - Hardened
- Diameter: 20mm to 200mm
- Condition: Quenched and Tempered
- Applications: High-stress applications, Tooling
4140 Round Bar - Cold Drawn
- Diameter: 15mm to 150mm
- Condition: Cold Drawn
- Applications: Shafts, Pins, and Structural components
4140 Round Bar - Custom Sizes
- Diameter: Customizable
- Condition: Based on requirements
- Applications: Specialized engineering 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 4140 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| 4140 Round Bar | 3 mm | $2.50 β $3.00 | βΉ207 β βΉ248 |
| 4140 Round Bar | 6 mm | $2.40 β $2.90 | βΉ199 β βΉ241 |
| 4140 Round Bar | 10 mm | $2.30 β $2.80 | βΉ192 β βΉ232 |
Note: Prices are indicative and may vary based on size, quantity, raw material cost, and delivery location. Contact us for the latest quotation for 4140 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
- 4140 Steel Round Bar Suppliers in Thailand
- 4140 Alloy Steel Round Bar Price in Thailand
- 4140 Round Bar Manufacturers in Thailand
- 4140 Steel Round Bar Specifications
- 4140 Round Bar Importers in Thailand
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.