4140 Forged Black Flat Bar in Delhi
4140 Forged Black Flat Bar in Delhi represents a high-strength alloy steel product widely sought after in various industrial sectors. Known for its excellent toughness, wear resistance, and hardenability, this flat bar is forged to enhance its mechanical properties, making it suitable for demanding engineering applications. Its black finish provides additional corrosion resistance and aesthetic appeal, ensuring durability under harsh working conditions.
Manufactured from chromium-molybdenum steel, this flat bar offers superior tensile strength and fatigue resistance, meeting rigorous industry standards. The forging process refines the grain structure, resulting in improved ductility and impact strength, which is essential for components subjected to heavy loads and dynamic stresses. Typical dimensions and thicknesses can be customized to suit specific project requirements, ensuring versatility across different manufacturing needs.
These alloy steel bars find extensive use in automotive, aerospace, heavy machinery, and construction equipment industries. They are ideal for fabricating shafts, gears, bolts, and structural components where high performance and reliability are critical. The black oxide coating further protects the surface from oxidation during storage and transit, maintaining the integrity of the material until it reaches the production line.
Suppliers in Delhi maintain stringent quality control processes, including chemical composition analysis and mechanical testing, to guarantee conformity with international standards such as ASTM A29 and SAE J404. This commitment ensures that the flat bars are export-ready, catering to global markets with consistent quality and timely delivery. Industrial buyers can also benefit from customized packaging and logistics solutions tailored to safeguard the product during overseas shipment.
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 Bar in Delhi 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 Bar in Delhi
- 2. How to Choose the Right Manufacturer
- 3.Comparison of 4140 Forged Black Flat Bar in Delhi
- 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 Bar in Delhi
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 Bar in Delhi
| 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, making it suitable for heavy-duty applications.
- ✔ Excellent toughness and wear resistance for longevity.
- ✔ Uniform mechanical properties due to the forging process.
- ✔ Versatile for machining and can be heat treated for enhanced performance.
- ✔ Available in various dimensions to meet specific requirements.
- ✔ Cost-effective solution for structural and industrial applications.
Technical Overview of 4140 Forged Black Flat Bar
| Product | Composition | Usage | Standards |
|---|---|---|---|
| 4140 Forged Black Flat 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 manufacturing gears, crankshafts, and heavy-duty machinery components | ASTM A829, SAE J403 |
| 4140 Forged Black Flat 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 applications requiring high strength and toughness | ASTM A829, SAE J403 |
| 4140 Forged Black Flat 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 oil and gas industry, as well as in automotive applications | ASTM A829, SAE J403 |
Specifications Table
| Material | 4140 Steel |
|---|---|
| Grades | AISI 4140 |
| Standard | ASTM A829 |
| Size Range | 25mm x 6mm to 100mm x 20mm |
| Length | Up to 6000mm |
| Form | Forged Black Flat Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| 4140 Forged Black Flat Bar | 0.38-0.43% C, 0.75-1.00% Mn, 0.15-0.25% Si, 0.04-0.15% Mo | Machinery components, automotive parts, structural applications |
| 4140 Forged Black Flat Bar | 0.40% C, 1.00% Mn, 0.20% Si, 0.20% Mo | Heavy equipment, tool manufacturing, pressure vessels |
| 4140 Forged Black Flat Bar | 0.41% C, 0.90% Mn, 0.25% Si, 0.15% Mo | Oil and gas industry, aerospace parts, high-stress applications |
| 4140 Forged Black Flat Bar | 0.42% C, 0.80% Mn, 0.20% Si, 0.10% Mo | Construction equipment, automotive chassis, gears |
| 4140 Forged Black Flat Bar | 0.39% C, 1.05% Mn, 0.15% Si, 0.25% Mo | Machine tools, agricultural implements, shafts |
Available Sizes of 4140 Forged Black Flat Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 20 x 5 | 100 x 20 |
| 25 x 6 | 120 x 25 |
| 30 x 8 | 150 x 30 |
| 40 x 10 | 200 x 40 |
| 50 x 12 | 250 x 50 |
| 60 x 15 | 300 x 60 |
| 70 x 20 | 350 x 70 |
| 80 x 25 | 400 x 80 |
| 90 x 30 | 450 x 90 |
| 100 x 35 | 500 x 100 |
Chemical Properties of 4140 Forged Black Flat Bar
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.75 - 1.00 |
| Phosphorus (P) | 0.04 max |
| Sulfur (S) | 0.04 max |
| Silicon (Si) | 0.15 - 0.40 |
| Chromium (Cr) | 0.90 - 1.20 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Iron (Fe) | Balance |
Mechanical Properties of 4140 Forged Black Flat Bar
| Property | Value |
|---|---|
| Tensile Strength | 95 - 110 ksi (655 - 758 MPa) |
| Yield Strength | 60 - 80 ksi (414 - 552 MPa) |
| Elongation | 20% (min) |
| Reduction of Area | 50% (min) |
| Hardness | HB 197 - 248 |
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 | Annealed |
| 480 | 100 - 500 | Tempered |
| 500 | 500 - 700 | Quenched |
Electrical Resistivity of 4140 Forged Black Flat Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 60 | 20 | As Forged |
| 62 | 100 | |
| 65 | 200 | |
| 68 | 300 | |
| 70 | 400 | |
Equivalent of 4140 Forged Black Flat Bar in Delhi
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A29 | 1.7225 | G41400 |
| SAE J403 | 4140 | G41400 |
Manufacturing Process & Heat Treatment of 4140 Forged Black Flat Bar
Annealing
Annealing of 4140 forged black flat bars involves heating the material to a temperature range of 870°C to 910°C, followed by a slow cooling process. This treatment reduces internal stresses, improves ductility, and refines the microstructure, making the material easier to machine and form.
Forging
The forging process for 4140 flat bars is performed at elevated temperatures, typically between 1150°C and 1250°C. This hot working process enhances the mechanical properties of the steel by refining the grain structure, resulting in improved strength and toughness.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850 - 900 | Oil | To increase hardness and strength through martensitic transformation. |
| Tempering | 400 - 600 | Air | To relieve stresses and adjust hardness to desired levels. |
| Stress Relieving | 600 - 650 | Air | To reduce residual stresses from the forging and hardening processes. |
The combination of these manufacturing and heat treatment processes ensures that 4140 forged black flat bars meet the stringent requirements for strength, toughness, and machinability needed in various industrial applications.
Various Types
4140 Forged Black Flat Bar - 25mm x 100mm
- Dimensions: 25mm x 100mm
- Condition: Hot Rolled
- Applications: Machinery components, Structural supports
4140 Forged Black Flat Bar - 20mm x 50mm
- Dimensions: 20mm x 50mm
- Condition: Cold Drawn
- Applications: Tool making, Automotive parts
4140 Forged Black Flat Bar - 30mm x 75mm
- Dimensions: 30mm x 75mm
- Condition: Normalized
- Applications: Heavy-duty fixtures, Industrial machinery
4140 Forged Black Flat Bar - 15mm x 60mm
- Dimensions: 15mm x 60mm
- Condition: Annealed
- Applications: Aerospace components, High-stress 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 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 | $3.10 – $3.70 | ₹257 – ₹307 |
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 Round Bar in Delhi
- Alloy Steel Flat Bar Suppliers in Delhi
- Forged Steel Products in Delhi
- 4140 Steel Plate in Delhi
- Black Steel Flat Bar Manufacturers in Delhi
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.