AISI 4340 Round Bar exporter in Singapore
AISI 4340 Round Bar exporter in Singapore specializes in supplying high-strength alloy steel bars known for their excellent toughness and fatigue resistance. This nickel-chromium-molybdenum steel grade is widely used in demanding industrial applications that require superior mechanical properties and reliability. The round bars are manufactured under stringent quality controls to meet international standards, ensuring consistent performance across diverse sectors.
The product typically features a tensile strength ranging from 1080 to 1390 MPa and offers excellent hardenability, making it suitable for heat treatment processes like quenching and tempering. With a balanced composition of carbon, manganese, nickel, chromium, and molybdenum, these bars provide enhanced wear resistance and impact strength. Dimensions are available in various diameters and lengths to accommodate custom machining and fabrication requirements.
Industries such as aerospace, automotive, heavy machinery, and oil & gas extensively utilize these alloy steel bars due to their ability to withstand high stress and harsh operational environments. Typical applications include aircraft landing gear, crankshafts, gears, and structural components where durability and performance are critical. The materialβs versatility also allows for machining into precision parts that demand dimensional stability and toughness.
Export readiness is a key focus for suppliers in Singapore, with comprehensive certification and documentation provided to comply with international trade regulations. Packaging is designed to protect the bars during transit, ensuring delivery in optimal condition. Logistics partners are carefully selected to facilitate timely and secure shipments, supporting global customers with consistent supply chains.
For industrial buyers seeking reliable sources of premium alloy steel bars, partnering with a reputable exporter in Singapore offers access to high-quality materials backed by technical expertise and responsive customer service. This ensures that project specifications are met with precision, enabling manufacturers to maintain production efficiency and product excellence.
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 Singapore 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 Singapore
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4340 Round Bar exporter in Singapore
- 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 Singapore
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 Singapore
| 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 Good weldability and machinability
- β Suitable for heavy-duty applications
- β Excellent hardenability
- β Available in various diameters and lengths
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 (1.50-1.80%), Molybdenum (0.15-0.25%) | Used in applications requiring high tensile strength and toughness, such as aircraft components, gear shafts, and heavy machinery. | ASTM A29, ASTM A322, SAE J403 |
| AISI 4340 Round Bar | Carbon (0.38-0.43%), Manganese (0.60-0.90%), Chromium (0.70-0.90%), Nickel (1.50-1.80%), Molybdenum (0.15-0.25%) | Ideal for heat-treated applications, providing excellent hardenability and fatigue resistance. | AMS 6414, ASTM A829 |
| AISI 4340 Round Bar | Carbon (0.38-0.43%), Manganese (0.60-0.90%), Chromium (0.70-0.90%), Nickel (1.50-1.80%), Molybdenum (0.15-0.25%) | Commonly used in the automotive and aerospace industries for structural components. | SAE J404, ISO 683-1 |
Specifications Table
| Material | AISI 4340 |
|---|---|
| Grades | Alloy Steel |
| Standard | ASTM A29/A29M |
| Size Range | 10 mm to 300 mm diameter |
| Length | Up to 6 meters |
| 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 (1.50-1.75%), Molybdenum (0.15-0.25%) | High-strength applications, automotive components, aerospace, heavy machinery |
| AISI 4340 Normalized Round Bar | Carbon (0.38-0.43%), Manganese (0.60-0.90%), Chromium (0.70-0.90%), Nickel (1.50-1.75%), Molybdenum (0.15-0.25%) | Applications requiring improved toughness, gears, shafts, fasteners |
| AISI 4340 Quenched and Tempered Round Bar | Carbon (0.38-0.43%), Manganese (0.60-0.90%), Chromium (0.70-0.90%), Nickel (1.50-1.75%), Molybdenum (0.15-0.25%) | High-stress applications, tooling, heavy-duty machinery |
| AISI 4340 Alloy Steel Round Bar | Carbon (0.38-0.43%), Manganese (0.60-0.90%), Chromium (0.70-0.90%), Nickel (1.50-1.75%), Molybdenum (0.15-0.25%) | Engineering structures, aircraft components, construction equipment |
| AISI 4340 Heat Treated Round Bar | Carbon (0.38-0.43%), Manganese (0.60-0.90%), Chromium (0.70-0.90%), Nickel (1.50-1.75%), Molybdenum (0.15-0.25%) | Applications needing enhanced hardness and strength, automotive industry |
Available Sizes of AISI 4340 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 20 | 25 |
| 30 | 35 |
| 40 | 45 |
| 50 | 55 |
| 60 | 70 |
| 80 | 90 |
| 100 | 110 |
| 120 | 130 |
| 140 | 150 |
| 160 | 170 |
Chemical Properties of AISI 4340
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.60 - 0.80 |
| 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
| Property | Value |
|---|---|
| Tensile Strength | 745 MPa (108,000 psi) |
| Yield Strength | 415 MPa (60,000 psi) |
| Elongation | 15% |
| Reduction of Area | 50% |
| Hardness (Brinell) | 207 HB |
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 - 200 | Annealed |
| 420 | 200 - 300 | Annealed |
Electrical Resistivity of AISI 4340 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (¡Ω·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | Normalized |
| 80 | 100 | |
| 85 | 200 | |
| 90 | 300 | |
| 95 | 400 | |
Equivalent of AISI 4340
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A829 | 34CrNiMo6 | G43400 |
| DIN 1.6582 | 34CrNiMo6 | G43400 |
Manufacturing Process & Heat Treatment of AISI 4340
Annealing
The annealing process for AISI 4340 involves heating the steel to a temperature range of 850-900Β°C, followed by a slow cooling process. This treatment softens the steel, relieves internal stresses, and improves its machinability, making it easier to work with in subsequent manufacturing processes.
Forging
Forging of AISI 4340 is typically performed at temperatures between 1100-1250Β°C. This process shapes the steel into round bars while improving its mechanical properties through deformation and grain refinement. The forged bars exhibit enhanced strength and toughness, crucial for high-performance applications.
Hardening & Tempering
| Process | Temperature Range (Β°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 800-850 | Oil or Water | To increase hardness and strength. |
| Tempering | 400-600 | Air | To reduce brittleness and relieve stresses. |
| Stress Relieving | 600-650 | Air | To further reduce residual stresses after hardening. |
The combination of these processes ensures that AISI 4340 round bars possess optimal mechanical properties for various industrial applications, including automotive and aerospace components.
Various Types
AISI 4340 Round Bar (Hot Rolled)
- Diameter: 20mm to 300mm
- Condition: Hot Rolled
- Applications: Aerospace, Automotive, Heavy Machinery
AISI 4340 Round Bar (Cold Drawn)
- Diameter: 5mm to 100mm
- Condition: Cold Drawn
- Applications: Precision Machining, Tooling
AISI 4340 Round Bar (Normalized)
- Diameter: 10mm to 150mm
- Condition: Normalized
- Applications: Structural Components, Gear Manufacturing
AISI 4340 Round Bar (Quenched and Tempered)
- Diameter: 20mm to 200mm
- Condition: Quenched and Tempered
- Applications: High-Strength Applications, Automotive 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 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| AISI 4340 Round Bar | 3 mm | $3.50 β $4.00 | βΉ290 β βΉ330 |
| AISI 4340 Round Bar | 6 mm | $3.20 β $3.80 | βΉ260 β βΉ310 |
| AISI 4340 Round Bar | 10 mm | $3.00 β $3.50 | βΉ240 β βΉ290 |
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 Supplier in Singapore
- AISI 4340 Round Bar Price in Singapore
- AISI 4340 Round Bar Manufacturer
- 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.