4140 Round Bar exporter in Hubli
4140 Round Bar exporter in Hubli offers high-quality alloy steel bars known for their excellent strength, toughness, and wear resistance. These bars are manufactured from chromium-molybdenum steel, making them ideal for heavy-duty industrial applications requiring enhanced mechanical properties and durability. Precision-engineered to meet international standards, the round bars provide consistent performance across various sectors.
The alloy steel round bars are available in multiple diameters and lengths, catering to diverse engineering requirements. With a balanced composition of carbon, chromium, and molybdenum, these bars deliver superior hardenability and fatigue resistance. Typical specifications include tensile strength ranging from 95,000 to 110,000 psi and yield strength around 60,000 psi, ensuring robust performance under high stress.
Widely used in the manufacturing of automotive components, machinery parts, shafts, gears, and heavy equipment, these 4140 bars are favored for their machinability and ability to withstand wear and impact. Their versatility makes them suitable for both heat-treated and tempered conditions, providing flexibility depending on the application needs. Industries such as construction, oil and gas, and aerospace rely heavily on these alloy bars for their critical structural requirements.
Export readiness is a key aspect of these products, with strict quality control measures and certifications aligning with global standards like ASTM A29 and EN 10083. Packaging is designed to protect the integrity of the steel during transit, ensuring timely and safe delivery to international clients. Additionally, logistical support and documentation are streamlined to facilitate smooth export operations from Hubli.
For industrial buyers seeking reliable and high-performance alloy steel round bars, sourcing from a reputable supplier in this region guarantees access to premium materials tailored to stringent engineering demands. The combination of material excellence, precise manufacturing, and export expertise positions these round bars as a preferred choice for global industrial applications.
Our Approvals | Third Party Inspection
Lead Time
2–7 weeks depending on size
Delivery Terms
FOB, CIF, DDP
Shipping Modes
Sea / Air / Express
Why 4140 Round Bar exporter in Hubli 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 4140 Round Bar exporter in Hubli
- 2. How to Choose the Right Manufacturer
- 3.Comparison of 4140 Round Bar exporter in Hubli
- 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 Hubli
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 Hubli
| 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 4140 Round Bar
- ✔ High tensile strength for demanding applications
- ✔ Excellent toughness and wear resistance
- ✔ Good machinability and formability
- ✔ Versatile for use in various industries
- ✔ Available in various diameters and lengths
- ✔ Conforms to ASTM A829 specifications
Technical Overview of 4140 Round Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| 4140 Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.80-1.10% Cr, 0.15-0.30% Mo | Used in high-stress applications such as gears, axles, and crankshafts | ASTM A829, SAE J403 |
| 4140 Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.80-1.10% Cr, 0.15-0.30% Mo | Ideal for manufacturing components that require high fatigue strength | AMS 6345, ASTM A572 |
| 4140 Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.80-1.10% Cr, 0.15-0.30% Mo | Commonly used in the automotive and aerospace industries | DIN 1.7225, ISO 683-1 |
Specifications Table
| Material | 4140 Steel |
|---|---|
| Grades | ASTM A829, AISI 4140 |
| Standard | ASTM A29/A29M |
| Size Range | 10 mm to 500 mm Diameter |
| Length | Up to 6 meters |
| Form | Round Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| 4140 Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.04-0.08% S, 0.15-0.25% Cr | Used in automotive components, machinery, and aerospace applications. |
| 4140 HT Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.04-0.08% S, 0.80-1.10% Cr | Ideal for higher strength applications such as gears and axles. |
| 4140 QT Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.04-0.08% S, 0.15-0.25% Cr | Excellent for applications requiring enhanced toughness and wear resistance. |
| 4140 Prehard Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.04-0.08% S, 0.15-0.25% Cr | Used in applications where minimal machining is desired after heat treatment. |
| 4140 Alloy Round Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.04-0.08% S, 0.15-0.25% Cr | Commonly used in manufacturing of structural components and tools. |
Available Sizes of 4140 Round Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 12 |
| 14 | 16 |
| 18 | 20 |
| 22 | 25 |
| 28 | 30 |
| 32 | 35 |
| 40 | 45 |
| 50 | 55 |
| 60 | 65 |
| 70 | 75 |
Chemical Properties of 4140 Round Bar
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.75 - 1.00 |
| Chromium (Cr) | 0.80 - 1.10 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Silicon (Si) | 0.15 - 0.40 |
| Iron (Fe) | Balance |
Mechanical Properties of 4140 Round Bar
| Property | Value |
|---|---|
| Tensile Strength | 655 MPa (95 ksi) |
| Yield Strength | 415 MPa (60 ksi) |
| Elongation | 20% |
| Hardness | 28-34 HRC |
| Modulus of Elasticity | 210 GPa (30,000 ksi) |
4140 Round Bar – Physical & Thermal Properties
Density of 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
Melting Point of 4140 Round Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1420 - 1540 °C | 2600 - 2800 °F |
Specific Heat of 4140 Round Bar
| Specific Heat of 4140 Round Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 460 | 20 - 400 | Room Temperature |
| 500 | 400 - 800 | High Temperature |
| 540 | 800 - 1000 | Near Melting |
Electrical Resistivity of 4140 Round Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 70 | 20 | Annealed |
| 75 | 100 | |
| 80 | 200 | |
| 85 | 300 | |
| 90 | 400 | |
Equivalent of 4140 Round Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| AISI | 1.7225 | G41400 |
| ASTM | A29 | 4140 |
Manufacturing Process & Heat Treatment of 4140 Round Bar
Annealing
Annealing of 4140 round bars involves heating the material to a temperature range of 850-900°C, followed by slow cooling in the furnace. This process relieves internal stresses, improves machinability, and refines the microstructure, resulting in a more uniform and stable material.
Forging
The forging process for 4140 round bars is conducted at elevated temperatures between 1100-1250°C. This hot working process enhances the mechanical properties of the steel by refining the grain structure and increasing strength and toughness. Forged bars are typically shaped into the desired dimensions using dies or hammers.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 830-870 | Oil or Water | To increase hardness and strength by transforming the microstructure to martensite. |
| Tempering | 400-600 | Air | To reduce brittleness and relieve stresses induced during hardening. |
| Stress Relieving | 600-650 | Air | To minimize residual stresses and stabilize the dimensions of the bar. |
The manufacturing and heat treatment processes for 4140 round bars are critical in achieving the desired mechanical properties and performance characteristics, making them suitable for a wide range of industrial applications.
Various Types
4140 Round Bar (Standard)
- Diameter: 20mm to 300mm
- Condition: Hot Rolled, Cold Drawn
- Applications: Machinery components, Automotive parts, Tooling
4140 Round Bar (Stress Relieved)
- Diameter: 25mm to 250mm
- Condition: Stress Relieved
- Applications: High-stress applications, Forging, Machining
4140 Round Bar (Quenched and Tempered)
- Diameter: 30mm to 200mm
- Condition: Quenched and Tempered
- Applications: Heavy-duty machinery, Structural components
4140 Round Bar (Pre-Hardened)
- Diameter: 15mm to 150mm
- Condition: Pre-Hardened
- Applications: Tooling, Jigs and fixtures, High-strength 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 4140 Round Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| 4140 Round Bar | 3 mm | $2.50 – $2.70 | ₹207 – ₹224 |
| 4140 Round Bar | 6 mm | $2.40 – $2.60 | ₹199 – ₹220 |
| 4140 Round Bar | 10 mm | $2.30 – $2.50 | ₹192 – ₹207 |
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: 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
- 4140 Steel Round Bar Suppliers in Hubli
- Alloy Steel Round Bar Exporters in Hubli
- 4140 Round Bar Price in Hubli
- 4140 Round Bar Manufacturers in Hubli
- 4140 Steel Round Bar Stockists in Hubli
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.