4140 Forged Black Flat Bar in Chandigarh
4140 Forged Black Flat Bar in Chandigarh is a high-grade alloy steel product known for its exceptional strength, toughness, and wear resistance. Manufactured through a forging process, this flat bar features a blackened surface finish that enhances its corrosion resistance and durability. The material composition primarily includes chromium, molybdenum, and manganese, making it ideal for demanding industrial applications requiring superior mechanical properties.
These alloy steel flat bars are available in various dimensions and thicknesses, catering to customized requirements in sectors such as automotive, construction, machinery, and heavy equipment manufacturing. The forged nature of the bar ensures a uniform grain structure, which translates into improved fatigue strength and enhanced performance under dynamic loads. Its black oxide coating further protects the surface from oxidation during storage and transportation.
Due to its robust specifications, this product is widely utilized in components like shafts, gears, bolts, and structural parts where high strength and resistance to impact are critical. The versatility of the alloy allows it to be heat treated to achieve different hardness levels, making it suitable for both machining and fabrication processes. Industrial buyers in Chandigarh benefit from the availability of these flat bars that meet stringent quality standards and certifications.
Manufacturers in the region emphasize strict quality control and adherence to international standards such as ASTM A29 and SAE J404, ensuring the product is ready for export to global markets. The supply chain is optimized for timely delivery, with packaging designed to prevent damage during transit. This export readiness makes the alloy steel flat bar a reliable choice for industries seeking both domestic and overseas procurement options.
Overall, the forged black flat bars made from 4140 alloy steel offer a blend of mechanical excellence and corrosion resistance, making them indispensable in industrial applications requiring durable and high-performance materials. Buyers in Chandigarh can expect consistent quality, technical support, and competitive pricing tailored to large-scale industrial demands.
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 Chandigarh 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 Chandigarh
- 2. How to Choose the Right Manufacturer
- 3.Comparison of 4140 Forged Black Flat Bar in Chandigarh
- 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 Chandigarh
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 Chandigarh
| 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 for enhanced durability
- ✔ Excellent wear resistance for prolonged service life
- ✔ Versatile applications in manufacturing and construction
- ✔ Good machinability for ease of fabrication
- ✔ Available in various sizes and thicknesses
- ✔ Cost-effective solution for industrial needs
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 structural applications, automotive components, and heavy machinery | ASTM A829, ASTM A36 |
| 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 manufacturing gears, axles, and crankshafts | SAE J404, 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 oil and gas applications, as well as in the construction industry | API 6A, API 7K |
Specifications Table
| Material | 4140 Forged Steel |
|---|---|
| Grades | 4140 |
| Standard | ASTM A829 |
| Size Range | 1" to 12" Width, 0.25" to 2" Thickness |
| Length | 6 Feet to 20 Feet |
| Form | Flat Bar |
Available Grades Table
| Product | Composition | Applications |
|---|---|---|
| 4140 Forged Black Flat Bar | C: 0.38-0.43%, Mn: 0.75-1.00%, Cr: 0.80-1.10%, Mo: 0.15-0.25% | Used in manufacturing gears, axles, and crankshafts |
| 4140 Forged Black Flat Bar | C: 0.40%, Mn: 0.90%, Cr: 1.00%, Mo: 0.20% | Suitable for high-stress applications in machinery |
| 4140 Forged Black Flat Bar | C: 0.37%, Mn: 0.80%, Cr: 0.90%, Mo: 0.20% | Commonly used in the aerospace and automotive sectors |
| 4140 Forged Black Flat Bar | C: 0.40%, Mn: 0.75%, Cr: 1.00%, Mo: 0.15% | Ideal for structural applications and machinery parts |
| 4140 Forged Black Flat Bar | C: 0.41%, Mn: 0.85%, Cr: 0.90%, Mo: 0.25% | Used in oil and gas equipment and heavy-duty applications |
Available Sizes of 4140 Forged Black Flat Bar (MM)
| Size (MM) | Size (MM) |
|---|---|
| 25 x 6 | 200 x 25 |
| 30 x 10 | 250 x 30 |
| 40 x 10 | 300 x 40 |
| 50 x 10 | 350 x 50 |
| 60 x 20 | 400 x 50 |
| 80 x 20 | 450 x 60 |
| 100 x 25 | 500 x 75 |
| 120 x 40 | 600 x 100 |
| 150 x 50 | 700 x 150 |
| 200 x 60 | 800 x 200 |
Chemical Properties of 4140 Forged Black Flat Bar
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.38 - 0.43 |
| Manganese (Mn) | 0.75 - 1.00 |
| Phosphorus (P) | 0.035 max |
| Sulfur (S) | 0.040 max |
| Silicon (Si) | 0.15 - 0.40 |
| Chromium (Cr) | 0.90 - 1.20 |
| Molybdenum (Mo) | 0.15 - 0.25 |
| Iron (Fe) | Bal. |
Mechanical Properties of 4140 Forged Black Flat Bar
| Property | Value |
|---|---|
| Tensile Strength | 655 MPa (95 ksi) |
| Yield Strength | 415 MPa (60 ksi) |
| Elongation | 20% |
| Reduction of Area | 50% |
| Hardness (Brinell) | 207 HB |
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 |
| 490 | 20 - 100 | Room Temperature |
| 500 | 100 - 300 | Elevated Temperature |
| 520 | 300 - 600 | High Temperature |
Electrical Resistivity of 4140 Forged Black Flat Bar
| Electrical Resistivity | ||
|---|---|---|
| Value (µΩ·m) | Temperature (°C) | Treatment or Condition |
| 75 | 20 | As-Forged |
| 80 | 100 | |
| 85 | 200 | |
| 90 | 300 | |
| 95 | 400 | |
Equivalent of 4140 Forged Black Flat Bar
| Standard | Werkstoff Nr. | UNS |
|---|---|---|
| ASTM A829 | 41CrMo4 | 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 850-900°C, followed by slow cooling. This process helps to relieve internal stresses, improve ductility, and refine the microstructure, making the steel easier to machine and work with in subsequent manufacturing processes.
Forging
The forging process for 4140 flat bars is conducted at elevated temperatures, typically between 1200-1300°C. This process involves shaping the steel through mechanical deformation, which enhances its strength and toughness due to the refined grain structure that develops during forging. The forged bars are then allowed to cool at room temperature.
Hardening & Tempering
| Process | Temperature Range (°C) | Quenching Medium | Purpose |
|---|---|---|---|
| Hardening | 850-880 | Oil | Increase hardness and strength |
| Tempering | 400-600 | Air | Reduce brittleness and relieve stresses |
| Final Annealing | 600-650 | Air | Improve machinability and ductility |
The combination of these heat treatment processes optimizes the mechanical properties of 4140 forged black flat bars, ensuring they meet industry standards for strength, toughness, and machinability, making them suitable for a wide range of applications in various sectors.
Various Types
4140 Forged Black Flat Bar - Type A
- Dimensions: 20mm x 100mm x 3000mm
- Condition: Hot Rolled
- Applications: Machinery components, Automotive parts
4140 Forged Black Flat Bar - Type B
- Dimensions: 25mm x 150mm x 6000mm
- Condition: Annealed
- Applications: Structural applications, Tooling
4140 Forged Black Flat Bar - Type C
- Dimensions: 30mm x 200mm x 4000mm
- Condition: Quenched and Tempered
- Applications: Heavy machinery, Tool making
4140 Forged Black Flat Bar - Type D
- Dimensions: 15mm x 75mm x 5000mm
- Condition: Cold Drawn
- Applications: Precision machining, Aerospace
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 – $2.70 | ₹206 – ₹223 |
| 4140 Forged Black Flat Bar | 6 mm | $2.40 – $2.60 | ₹198 – ₹218 |
| 4140 Forged Black Flat Bar | 10 mm | $2.30 – $2.50 | ₹190 – ₹206 |
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 Chandigarh
- Alloy Steel Flat Bar Suppliers in Chandigarh
- Forged Steel Products in Chandigarh
- 4140 Steel Properties and Applications
- Black Steel Flat Bar Manufacturers in Chandigarh
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.