4140 Flat Bars Manufacturer in India
Super Metal Manufacturing Co. is a trusted supplier and stockist of 4140 Flat Bars for industrial and engineering applications. Since 1965, the company has supported customers requiring alloy steel products for machinery, manufacturing, automotive, construction and other demanding industries.
4140 Flat Bars are manufactured and supplied for applications where a flat cross-section is required for machining, fabrication or manufacturing of mechanical components. The chromium-molybdenum composition provides the material with useful hardenability and strength characteristics.
As a 4140 Flat Bars Manufacturer and Stockist, we support requirements for different widths, thicknesses and lengths. Depending on the specification, the material may be supplied in annealed, normalized, hardened and tempered, or quenched and tempered conditions.
What are 4140 Flat Bars?
4140 Flat Bars are rectangular-section alloy steel bars manufactured from AISI 4140 / SAE 4140 chromium-molybdenum steel. Unlike round bars, flat bars have a flat rectangular profile, making them suitable for components requiring a broad working surface, controlled thickness or easy machining.
4140 Flat Bars are commonly used for brackets, machine parts, tooling components, base plates, structural mechanical parts, clamps, fixtures, shafts, connecting components and other high-strength fabricated or machined products.
The material is frequently compared with EN19 and 42CrMo4 / 1.7225. These grades are commonly used in similar engineering applications, but exact material equivalence should always be confirmed against the applicable standard, chemical composition and mechanical properties.
4140 Flat Bars Manufacturing Process
The manufacturing process for 4140 Flat Bars depends on the required dimensions, production route, surface finish and material condition. Typical processing includes raw material selection, controlled heating, rolling or forging, heat treatment, cutting, straightening, finishing and inspection.
Raw Material Selection
Suitable chromium-molybdenum alloy steel is selected according to the required 4140 grade and applicable specification. Heat identification and material traceability can be maintained according to customer quality requirements.
Heating
The selected material is heated under controlled conditions before hot working. Controlled heating helps achieve consistent deformation and suitable metallurgical characteristics.
Rolling or Forging
Depending on the required thickness and width, the material may be hot rolled or forged into flat bar sections. Forged flat bars can be considered for applications requiring forged stock.
Heat Treatment
Heat treatment may include annealing, normalizing, hardening, quenching and tempering according to the required material condition and mechanical properties.
Cutting and Straightening
4140 Flat Bars can be supplied in standard or customized lengths. Straightening and cutting operations can be performed according to customer requirements.
Surface Finishing
Additional machining operations such as milling, grinding or surface finishing may be carried out where closer dimensional accuracy or improved surface condition is required.
Inspection
Inspection may include chemical analysis, dimensional inspection, surface inspection and mechanical testing according to the applicable specification and purchase requirements.
Material Specification Chart
| Grade | AISI 4140 / SAE 4140 |
|---|---|
| Material Type | Chromium Molybdenum Alloy Steel |
| Material Number | 1.7225 / 42CrMo4 |
| Standards | ASTM, ASME, AISI, SAE, EN, DIN, JIS, BS |
| Width | 10 mm to 300 mm |
| Thickness | 3 mm to 100 mm |
| Length | 1000 mm to 6000 mm |
| Finish | Black, Bright, Forged, Machined, Ground |
| Form | Flat Bar, Forged Flat Bar, Machined Flat Bar |
| Supply Condition | Annealed, Normalized, Hardened & Tempered, Quenched & Tempered |
SAE 4140 / EN19 / 42CrMo4 Flat Bars Grade
| Country names | USA | German | British | Japan | China | Australia | |
|---|---|---|---|---|---|---|---|
| Country standards | UNS | AISI / ASTM | DIN | BS | JIS | GB/T | AS |
| Grades | G41400 | 4140 | 1.7225 / 42CrMo4 | EN19 / 817M40 | SCM440 | 42CrMo | 4140 |
4140 Flat Bars Chemical Composition
The chemical composition of 4140 Alloy Steel gives the material its characteristic combination of strength, toughness and hardenability. Carbon contributes to hardness and strength, while chromium and molybdenum improve hardenability and mechanical performance.
| Element | Typical Composition |
|---|---|
| Carbon (C) | 0.38 – 0.43% |
| Manganese (Mn) | 0.75 – 1.00% |
| Silicon (Si) | 0.15 – 0.35% |
| Chromium (Cr) | 0.80 – 1.10% |
| Molybdenum (Mo) | 0.15 – 0.25% |
| Phosphorus (P) | As per applicable specification |
| Sulfur (S) | As per applicable specification |
Actual chemical composition should be confirmed against the applicable material specification and Mill Test Certificate for the supplied material.
Advantages of 4140 Flat Bars
- High Strength: Suitable for demanding mechanical and engineering components.
- Good Toughness: Provides a useful balance between strength and toughness when properly processed.
- Good Hardenability: Chromium and molybdenum contribute to the hardenability of the alloy.
- Wear Resistance: Properly heat-treated 4140 can provide useful resistance to mechanical wear.
- Heat Treatment Capability: Can be supplied in different material conditions according to application requirements.
- Good Machining Capability: Suitable conditions can be machined into precision engineering components.
- Versatile Industrial Grade: Used across automotive, machinery, construction, mining, agriculture and general engineering industries.
4140 Flat Bars Applications
4140 Flat Bars are used for components requiring a strong and machinable rectangular steel section. The material is particularly useful for applications where a flat profile is required for machining, fabrication, fastening or structural mechanical assembly.
Automotive Industry
Applications can include brackets, mounting components, machine parts, fixtures, connecting components and other high-strength automotive parts.
Heavy Machinery
4140 Flat Bars are used for machinery components, supports, fabricated parts, clamps, tooling components and high-load mechanical assemblies.
Construction Equipment
The material can be used for brackets, mounting plates, pins, fabricated mechanical parts and other components used in heavy equipment.
Mining Equipment
4140 alloy steel flat sections can be used for wear-prone mechanical components, brackets, supports and high-strength machined parts.
Agricultural Machinery
Applications include machinery brackets, mounting components, shafts, fixtures and other agricultural equipment parts.
General Engineering
4140 Flat Bars are used for tooling, fixtures, machine parts, base components, clamps, brackets and fabricated engineering components.
4140 Flat Bars Heat Treatment
Heat treatment allows 4140 Alloy Steel Flat Bars to achieve different combinations of hardness, strength and toughness. The appropriate treatment depends on the final application and required mechanical properties.
Annealing
Annealing can produce a softer material condition and improve machinability for subsequent manufacturing operations.
Normalizing
Normalizing can be used to obtain a suitable microstructure and mechanical condition before further processing.
Quenching
Quenching is part of the hardening process and is used to increase hardness and strength.
Tempering
Tempering after hardening can provide a practical balance between hardness, strength and toughness.
Our 4140 Flat Bars are supplied with attention to dimensional accuracy, surface condition and material traceability. Customized widths, thicknesses and cut-to-length requirements can be discussed for OEM, engineering and fabrication applications.
Super Metal Manufacturing Co. combines long-standing experience with flexible supply options to support customers looking for 4140 Alloy Steel Flat Bars Manufacturer and stockist services in India and international markets.
Alloy Steel 4140 Flat Bars Dimensions Standard
|
Width (mm) |
Thickness | Approx. Area | Form |
| mm | cm² | Flat | |
| 10 | 3 | 0.30 | Flat Bar |
| 15 | 5 | 0.75 | Flat Bar |
| 20 | 5 | 1.00 | Flat Bar |
| 25 | 6 | 1.50 | Flat Bar |
| 30 | 6 | 1.80 | Flat Bar |
| 40 | 8 | 3.20 | Flat Bar |
| 50 | 10 | 5.00 | Flat Bar |
| 60 | 10 | 6.00 | Flat Bar |
| 75 | 12 | 9.00 | Flat Bar |
| 100 | 15 | 15.00 | Flat Bar |
| 125 | 20 | 25.00 | Flat Bar |
| 150 | 25 | 37.50 | Flat Bar |
| 200 | 30 | 60.00 | Flat Bar |
| 250 | 40 | 100.00 | Flat Bar |
| 300 | 50 | 150.00 | Flat Bar |
Why Choose Super Metal Manufacturing Co.?
- Since 1965: Long-standing experience in industrial metal products and supply.
- Quality & Traceability: Material Test Certificates and batch traceability according to customer requirements.
- Custom Services: Cut-to-length, customized widths and thicknesses, and machining-ready supply.
- Heat Treatment: Different material conditions can be supplied according to specification and availability.
- Industrial Supply: Suitable for OEMs, fabricators, engineering companies, machinery manufacturers and distributors.
- Export Support: International packing and documentation support for overseas industrial requirements.
Certifications & Quality Assurance
We maintain quality-focused inspection procedures and can provide relevant documentation according to customer and purchase requirements.
- Mill Test Certificate
- Chemical Composition Report
- Mechanical Test Report
- Dimensional Inspection
- Third-party inspection reports available on request
Export Packing & Shipping
Typical export packing for 4140 Flat Bars includes steel bundling, wooden crates or skids, waterproof wrapping and suitable protective packaging. Fumigated wood can be arranged where required. Shipping and documentation can be coordinated according to destination and buyer requirements.
MOQ, Lead Time & Payment
Minimum Order Quantity (MOQ):
Contact us for exact MOQ according to size, grade and quantity.
Lead Time:
Stock availability, inspection, cutting, documentation and order
quantity determine delivery time.
Payment Terms:
Payment terms can be discussed according to order quantity,
destination and commercial requirements.
HS Code & Export Documentation
The applicable HS classification should be confirmed according to the exact product form and destination. Export documentation may include Commercial Invoice, Packing List, Bill of Lading / AWB, Mill Test Certificate and Certificate of Origin where applicable.
Typical Applications
4140 Flat Bars are commonly used for brackets, fixtures, machine parts, tooling components, mounting plates, clamps, supports, fabricated mechanical parts and other high-strength engineering components.
Export Destinations
Super Metal Manufacturing Co. supports export enquiries from international markets including Europe, the Middle East, North America, Southeast Asia and Africa, subject to commercial and shipping requirements.
Frequently Asked Questions (FAQs)
Who is a 4140 Flat Bars Manufacturer in India?
Super Metal Manufacturing Co. Since 1965 supplies 4140 Alloy Steel Flat Bars for industrial and engineering applications. Different widths, thicknesses, lengths, finishes and material conditions can be supplied according to requirements and availability.
What are 4140 Flat Bars?
4140 Flat Bars are rectangular-section chromium-molybdenum alloy steel bars manufactured from AISI 4140 / SAE 4140 steel. They are used for high-strength mechanical, fabricated and machined components.
What is AISI 4140 Flat Bar used for?
AISI 4140 Flat Bars are used for brackets, fixtures, machine parts, tooling components, mounting plates, clamps, supports and other engineering components requiring strength and toughness.
Is 4140 the same as 42CrMo4?
4140 and 42CrMo4 are commonly compared chromium-molybdenum alloy steels used for similar engineering applications. Exact equivalence should be confirmed against the applicable standard, chemical composition and mechanical requirements.
Is 4140 equivalent to EN19?
4140 and EN19 are commonly used for similar engineering applications, but exact grade equivalence should be verified against the applicable standard and required material properties before substitution.
Can 4140 Flat Bars be heat treated?
Yes. 4140 Flat Bars can be supplied in suitable heat-treated conditions such as annealed, normalized, hardened and tempered, or quenched and tempered, depending on the required specification.
What sizes are available in 4140 Flat Bars?
4140 Flat Bars can be supplied in different widths, thicknesses and lengths. Customized dimensions can be discussed according to production capability, stock availability and customer requirements.
What surface finishes are available for 4140 Flat Bars?
4140 Flat Bars can be supplied in black, bright, forged, machined and ground finishes depending on the required application and available manufacturing route.
Do you provide Mill Test Certificates for 4140 Flat Bars?
Yes. Mill Test Certificates and relevant inspection documentation can be provided according to the applicable purchase specification and customer quality requirements.
How can I request a quotation for 4140 Flat Bars?
Share the required grade, width, thickness, length, quantity, surface finish, heat-treatment condition and delivery location with Super Metal Manufacturing Co. through email or WhatsApp for an availability and quotation enquiry.