4140 Forged Black Flat Barin Noida
4140 Forged Black Flat Barin Noida is a high-strength alloy steel product widely used in various industrial applications. Known for its toughness, excellent fatigue strength, and wear resistance, this flat bar is manufactured through a forging process that enhances its mechanical properties. The black finish typically indicates a protective oxide layer that offers corrosion resistance and an improved surface for further processing or coating.
Constructed from 4140 alloy steel, this flat bar boasts a balanced composition of chromium, molybdenum, and manganese, providing superior hardenability and durability. The forging process refines the grain structure, resulting in a component that can withstand heavy loads and high-stress environments. These bars are available in multiple sizes and thicknesses to meet the precise requirements of fabricators and engineers.
Industries such as automotive, aerospace, heavy machinery, and construction rely heavily on these flat bars for manufacturing shafts, gears, and structural components. The material's excellent machinability and heat-treating capabilities make it ideal for parts requiring high strength and resistance to wear and impact. Additionally, the black oxide finish helps reduce friction during assembly and prolongs service life.
Suppliers in Noida ensure that these forged flat bars comply with international quality standards, making them suitable for export markets. Rigorous testing protocols, including tensile strength, hardness, and chemical composition analysis, guarantee consistent performance. Packaging and logistics are optimized to preserve the integrity of the product during transit, supporting global supply chains efficiently.
For industrial buyers seeking reliable, high-performance flat bars, these forged alloy steel products offer a robust solution. Their adaptability across demanding applications and readiness for export make them a preferred choice for manufacturers aiming to enhance the durability and quality of their end products.
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 Forged Black Flat Barin Noida 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 Forged Black Flat Barin Noida
- 2. How to Choose the Right Manufacturer
- 3.Comparison of 4140 Forged Black Flat Barin Noida
- 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 Forged Black Flat Barin Noida
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 Forged Black Flat Barin Noida
| 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 Forged Black Flat Bar
- ✔ High tensile strength and durability
- ✔ Excellent machinability for various applications
- ✔ Superior wear and impact resistance
- ✔ Ideal for structural and mechanical components
- ✔ Available in various sizes and thicknesses
- ✔ Treated for enhanced performance and longevity
Technical Overview of 4140 Forged Black Flat Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| 4140 Forged Black Flat Bar | Carbon: 0.38-0.43%, Manganese: 0.75-1.00%, Chromium: 0.90-1.20%, Molybdenum: 0.15-0.25% | Used in manufacturing high-stress components such as gears, shafts, and axles. | ASTM A829, ASTM A36, SAE J403 |
| 4140 Forged Black Flat Bar | Carbon: 0.38-0.43%, Manganese: 0.75-1.00%, Chromium: 0.90-1.20%, Molybdenum: 0.15-0.25% | Commonly utilized in the automotive and aerospace industries for its strength and toughness. | API 5CT, ASME SA105 |
| 4140 Forged Black Flat Bar | Carbon: 0.38-0.43%, Manganese: 0.75-1.00%, Chromium: 0.90-1.20%, Molybdenum: 0.15-0.25% | Ideal for applications requiring high fatigue strength and wear resistance. | ISO 683-2, DIN 17200 |
Specifications Table
| Material | 4140 Steel |
|---|---|
| Grades | ASTM A29, AISI 4140 |
| Standard | ASTM A36, ASTM A572 |
| Size Range | 1" x 3" to 4" x 12" |
| Length | Up to 20 feet |
| Form | Forged Flat Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| 4140 Forged Black Flat Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Si: 0.15-0.40%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Used in high-stress applications like gears, axles, and shafts |
| 4140HT Forged Black Flat Bar | C: 0.40-0.45%, Mn: 0.75-1.00%, Si: 0.15-0.40%, Cr: 0.80-1.10%, Mo: 0.20-0.30% | Ideal for heavy-duty machinery and components requiring high toughness |
| 4140 Prehard Forged Black Flat Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Si: 0.15-0.40%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Suitable for applications where wear resistance and strength are critical |
| 4140 Alloy Steel Forgings | C: 0.40-0.45%, Mn: 0.75-1.00%, Si: 0.15-0.40%, Cr: 0.90-1.20%, Mo: 0.15-0.25% | Commonly used for military and aerospace applications |
| 4140 Mod Forged Black Flat Bar | C: 0.40-0.45%, Mn: 0.75-1.00%, Si: 0.15-0.40%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Used in high-performance automotive and industrial applications |
Available Sizes of 4140 Forged Black Flat Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 10 | 20 |
| 30 | 40 |
| 50 | 60 |
| 70 | 80 |
| 90 | 100 |
| 110 | 120 |
| 130 | 140 |
| 150 | 160 |
| 170 | 180 |
| 190 | 200 |
Chemical Properties of 4140 Forged Black Flat 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 |
| Silicon (Si) | 0.15 - 0.40 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Iron (Fe) | Balance |
Mechanical Properties of 4140 Forged Black Flat Bar
| Property | Value |
|---|---|
| Tensile Strength | 655 MPa |
| Yield Strength | 415 MPa |
| Elongation | 21% |
| Reduction of Area | 50% |
| Hardness | 28-34 HRC |
4140 Forged Black Flat Bar – Physical & Thermal Properties
Density of 4140 Forged Black Flat Bar
| Property | Metric | Imperial |
|---|---|---|
| Density | 7.85 g/cm³ | 0.284 lb/in³ |
Melting Point of 4140 Forged Black Flat Bar
| Property | Metric | Imperial |
|---|---|---|
| Melting Point | 1420 - 1540 °C | 2600 - 2800 °F |
Specific Heat of 4140 Forged Black Flat Bar
| Specific Heat of 4140 Forged Black Flat Bar | ||
|---|---|---|
| Specific Heat (J/kg·K) | Temperature Range (°C) | Condition |
| 460 | 20 - 100 | Room Temperature |
| 500 | 100 - 300 | Heat Treated |
| 520 | 300 - 600 | High Temperature |
Electrical Resistivity of 4140 Forged Black Flat Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 0.0030 | 20 | As Forged |
| 0.0031 | 100 | |
| 0.0032 | 200 | |
| 0.0033 | 300 | |
| 0.0034 | 400 | |
Equivalent of 4140 Forged Black Flat Bar in Noida
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| AISI | 1.7225 | G41400 |
| ASTM | A29 | A4140 |
Manufacturing Process & Heat Treatment of 4140 Forged Black Flat Bar
Annealing
Annealing of 4140 forged black flat bars involves heating the steel to a temperature range of 820-860°C followed by slow cooling. This process helps in relieving internal stresses, refining the grain structure, and improving machinability.
Forging
The forging process for 4140 involves heating the steel to approximately 1200°C and then shaping it through mechanical deformation. This method enhances the material's strength and toughness by aligning the grain structure along the direction of the applied force.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-900 | Oil | To increase hardness and strength of the material. |
| Tempering | 400-600 | Air | To reduce brittleness and improve toughness. |
| Stress Relieving | 600-650 | Air | To relieve residual stresses from the hardening process. |
The combination of these processes ensures that 4140 forged black flat bars achieve optimal mechanical properties suitable for a variety of industrial applications, providing both strength and ductility.
Various Types
4140 Forged Black Flat Bar - Standard
- Width: 2 inches, Thickness: 0.25 inches, Length: 12 feet
- Condition: Hot Rolled
- Applications: Manufacturing, Automotive Components
4140 Forged Black Flat Bar - Heavy Duty
- Width: 4 inches, Thickness: 0.5 inches, Length: 10 feet
- Condition: Quenched and Tempered
- Applications: Heavy Machinery, Structural Applications
4140 Forged Black Flat Bar - Custom Sizes
- Customizable Dimensions Available
- Condition: Annealed
- Applications: Tooling, Fixtures, Jigs
4140 Forged Black Flat Bar - Precision Cut
- Width: 3 inches, Thickness: 0.375 inches, Length: 8 feet
- Condition: Cold Finished
- Applications: Precision Engineering, Aerospace 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 Forged Black Flat Bar
| Material Grade | Thickness | Price (USD / Kg) | Price (INR / Kg) |
|---|---|---|---|
| 4140 Forged Black Flat Bar | 3 mm | $2.50 – $3.00 | ₹207 – ₹248 |
| 4140 Forged Black Flat Bar | 6 mm | $2.80 – $3.30 | ₹232 – ₹273 |
| 4140 Forged Black Flat Bar | 10 mm | $3.00 – $3.50 | ₹248 – ₹290 |
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 Forged Black Flat 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 Properties
- Forged Steel Bar Suppliers in Noida
- Black Flat Bar Applications
- 4140 Alloy Steel Specifications
- Metal Fabrication Services in Noida
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.