AISI 4140 Round Bar exporter in Singapore
AISI 4140 Round Bar exporter in Singapore plays a crucial role in supplying high-quality alloy steel bars to various industrial sectors. Known for its excellent strength, toughness, and wear resistance, AISI 4140 is a chromium-molybdenum steel that is widely used in manufacturing components requiring durability and reliability. The round bar form provides versatility, making it suitable for machining into shafts, gears, bolts, and other precision parts.
This particular grade of alloy steel boasts a balanced composition that includes chromium, molybdenum, and manganese, which enhances hardenability and fatigue strength. Typically available in multiple diameters and lengths, these bars are supplied with precise dimensional tolerances and surface finishes to meet stringent engineering standards. Heat treatment options such as quenching and tempering further improve the mechanical properties, ensuring optimal performance under demanding conditions.
Industries such as automotive, aerospace, construction, and heavy machinery rely heavily on these alloy steel bars for critical applications. Their ability to withstand high stress and resist corrosion makes them ideal for manufacturing components like crankshafts, connecting rods, hydraulic parts, and fasteners. Additionally, their machinability allows for cost-effective production without compromising structural integrity.
Export readiness is a key consideration for suppliers based in Singapore, ensuring that the round bars meet international quality certifications and packaging standards. This facilitates smooth logistics and timely delivery to global markets, reinforcing Singaporeβs position as a strategic hub for steel exports. Industrial buyers can expect consistent quality assurance, traceability, and compliance with industry norms, which are essential for maintaining operational efficiency.
Choosing a reliable supplier in this region guarantees access to premium AISI 4140 alloy steel products tailored to specific project requirements. With a focus on technical support and supply chain reliability, exporters in Singapore are well-equipped to serve demanding clients across various sectors, providing solutions that enhance performance and longevity of critical components.
Our Approvals | Third Party Inspection
Lead Time
2β7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why AISI 4140 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 4140 Round Bar exporter in Singapore
- 2. How to Choose the Right Manufacturer
- 3.Comparison of AISI 4140 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 4140 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 4140 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 4140 Round Bar
- β High tensile strength for demanding applications
- β Excellent wear resistance for longevity
- β Good machinability for ease of fabrication
- β Commonly used in automotive and aerospace industries
- β Versatile heat treatment options available
- β Compliance with international quality standards
Technical Overview of AISI 4140 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| AISI 4140 Round Bar | Carbon 0.38-0.43%, Manganese 0.75-1.00%, Chromium 0.80-1.10%, Molybdenum 0.15-0.25% | Used in manufacturing gears, shafts, and heavy-duty machinery components due to its high tensile strength and toughness. | ASTM A829, ASTM A36, SAE J403 |
| AISI 4140 Round Bar | Carbon 0.38-0.43%, Manganese 0.75-1.00%, Chromium 0.80-1.10%, Molybdenum 0.15-0.25% | Ideal for applications requiring high wear resistance and strength in oil and gas industries. | AMS 6346, ASME SA-829 |
| AISI 4140 Round Bar | Carbon 0.38-0.43%, Manganese 0.75-1.00%, Chromium 0.80-1.10%, Molybdenum 0.15-0.25% | Commonly used in automotive and aerospace applications where high strength is essential. | ASTM AISI 4140, SAE J404 |
Specifications Table
| Material | AISI 4140 |
|---|---|
| Grades | 4140, 4140HT |
| Standard | ASTM A829, ASTM A29 |
| Size Range | 5/8" to 12" diameter |
| Length | Up to 20 feet |
| 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 automotive parts, gears, and high-stress applications |
| AISI 4140 HT Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Suitable for high tensile strength applications |
| 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% | Ideal for parts requiring high hardness and strength |
| AISI 4140 QT Round Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Used in applications requiring good wear resistance |
| 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% | Commonly used in structural applications and machinery |
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 | 85 |
| 90 | 95 |
| 100 | 110 |
| 120 | 130 |
Chemical Properties of AISI 4140
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.75 - 1.00 |
| Phosphorus (P) | Max 0.04 |
| Sulfur (S) | Max 0.04 |
| Silicon (Si) | 0.15 - 0.40 |
| Chromium (Cr) | 0.80 - 1.10 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Iron (Fe) | Balance |
Mechanical Properties of AISI 4140
| Property | Value |
|---|---|
| Tensile Strength | 655 MPa (95 ksi) |
| Yield Strength | 415 MPa (60 ksi) |
| Elongation | 20% |
| Reduction of Area | 50% |
| Hardness (Brinell) | 207 HB |
AISI 4140 Round Bar β Physical & Thermal Properties
Density of AISI 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7850 kg/mΒ³ | 490 lb/ftΒ³ |
Melting Point of AISI 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1420 - 1540 Β°C | 2600 - 2800 Β°F |
Specific Heat of AISI 4140 Round Bar
| Specific Heat of AISI 4140 Round Bar | ||
|---|---|---|
| Specific Heat (J/kgΒ·K) | Temperature Range (Β°C) | Condition |
| 500 | 20 - 100 | Room Temperature |
| 460 | 100 - 300 | Heat Treated |
| 420 | 300 - 600 | High Temperature |
Electrical Resistivity of AISI 4140 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (¡Ω·m) | Temperature (°C) | Treatment or Condition |
| 73 | 20 | Normalized |
| 75 | 100 | |
| 78 | 200 | |
| 80 | 300 | |
| 82 | 400 | |
Equivalent of AISI 4140 Round Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 1.7225 | G41400 |
| SAE J403 | 4140 | G41400 |
Manufacturing Process & Heat Treatment of AISI 4140 Round Bar
Annealing
The annealing process for AISI 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 helps to relieve internal stresses, improve machinability, and refine the microstructure, resulting in a more uniform grain structure.
Forging
Forging of AISI 4140 round bars is typically performed at temperatures between 1100Β°C and 1250Β°C. This process enhances the mechanical properties of the steel by aligning the grain structure and improving strength and toughness. The forged bars are then allowed to cool at room temperature.
Hardening & Tempering
| Process | Temperature Range (Β°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 830 - 870 | Oil | To increase hardness and strength |
| Tempering | 400 - 700 | Air | To reduce brittleness and improve toughness |
| Stress Relieving | 600 - 650 | Air | To relieve residual stresses from hardening |
The combination of these processes ensures that AISI 4140 round bars meet the stringent requirements for various industrial applications, providing excellent wear resistance and durable performance.
Various Types
AISI 4140 Round Bar - Heat Treated
- Diameter: 20mm to 300mm
- Condition: Quenched and Tempered
- Applications: Automotive components, Machinery parts
AISI 4140 Round Bar - Cold Drawn
- Diameter: 10mm to 100mm
- Condition: Cold Drawn
- Applications: Shafts, Pins, Fasteners
AISI 4140 Round Bar - Hot Rolled
- Diameter: 25mm to 150mm
- Condition: Hot Rolled
- Applications: Structural components, Heavy machinery
AISI 4140 Round Bar - Annealed
- Diameter: 15mm to 200mm
- Condition: Annealed
- Applications: Machining, Fabrication
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 β $3.00 | βΉ205 β βΉ246 |
| AISI 4140 | 6 mm | $2.40 β $2.90 | βΉ198 β βΉ239 |
| AISI 4140 | 10 mm | $2.30 β $2.80 | βΉ192 β βΉ233 |
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: 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 4140 Steel Round Bar Suppliers in Singapore
- 4140 Alloy Steel Round Bar Price in Singapore
- AISI 4140 Round Bar Importers in Singapore
- 4140 Steel Round Bar Specifications
- Heat Treatment of AISI 4140 Round Bar
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.