4140 Alloy Steel Manufacturer
As a professional 4140 Manufacturer, we understand the importance of producing alloy steel material with consistent dimensions, surface quality and material characteristics. 4140 steel contains chromium and molybdenum as alloying elements and is widely used where higher strength and toughness are required compared with conventional carbon steel.
Our 4140 Round Bars are suitable for manufacturers, engineering companies, OEMs, fabricators, machinery manufacturers, stockists and distributors requiring alloy steel for demanding mechanical applications. The material can be supplied according to the required diameter, length, surface condition and heat-treatment requirement.
The selection of 4140 steel depends on the application and required mechanical properties. Heat-treated 4140 can be used for components exposed to significant mechanical loads, while suitable softer conditions can be selected when machining requirements are important.
Super Metal Manufacturing Co. combines manufacturing experience with customer-focused industrial supply. We assist customers with specification identification, product dimensions, material condition, documentation, packing and shipment requirements.
Material Specification Chart
| Specifications | ASTM A182, ASME SA182 |
|---|---|
| Standards | EN, DIN, JIS, ASTM, BS, ASME, AISI |
| Range of Diameter | 5mm to 500mm |
| Finish | Bright, Black, Forged, Turned Bright |
| Length | 1000 mm Long To 6000 mm Long |
| Form | Round, Billet, Ingot, Forging Etc. |
SAE 4140 / EN19 / 42CrMo4 Round Bars Grade
| Country names | Poland | USA | German | British | Japan | China | Australia | |
|---|---|---|---|---|---|---|---|---|
| Country standards | UNS | AISI | ASTM A29 | DIN 17200 | BS 970 | JIS G4105 | GB/T 3077 | AS 1444 |
| Grades | G41400 | 4140 | 4140 | 1.7225/ 42CrMo4 | EN 19 / 42CrMo4 | SCM440 | 42CrMo | 4140 |
What is 4140 Round Bar?
4140 Round Bar is a chromium-molybdenum alloy steel bar manufactured in a circular cross-section for use in engineering and mechanical applications. It is valued for its combination of strength, toughness, hardness and wear resistance, particularly when the material is processed and heat treated according to the intended application.
The round-bar form is particularly useful because it can be machined into shafts, gears, axles, pins, studs, crankshafts, hydraulic components, fasteners and other precision-engineered parts. The required diameter and length depend on the component design and manufacturing process.
As an experienced 4140 Round Bar Manufacturer, Super Metal Manufacturing Co. supports customers requiring different sizes and conditions. Customers can provide drawings, specifications or dimensional requirements for evaluation before placing an order.
4140 Round Bar Manufacturing Process
The manufacturing process for 4140 Round Bar consists of controlled processing stages intended to achieve the required product form, dimensions, surface condition and material properties. The precise process can vary according to the product size, specification, manufacturing route and customer's requirements.
1. Raw Material Selection
Suitable alloy steel raw material is selected according to the specified 4140 grade and applicable material requirements. Material identification and composition requirements are considered before processing.
2. Heating
The steel is heated under controlled conditions to prepare it for the required hot-working operation. Controlled heating supports uniform processing and helps maintain consistency throughout the manufacturing cycle.
3. Forging or Rolling
Depending on the required product form and manufacturing route, the heated material can undergo forging or rolling to produce the required round-bar profile and approximate dimensions. Controlled deformation helps achieve the desired product structure and dimensional characteristics.
4. Heat Treatment
4140 alloy steel can be heat treated according to the required application and material condition. Common conditions include annealed, normalized, hardened and tempered, and quenched and tempered. The selected treatment depends on the required hardness, strength, toughness and machining requirements.
5. Surface Finishing
Following forming and heat treatment, the material can be supplied in a suitable surface condition. Available finishes include bright, black, forged and turned bright, subject to the product specification.
6. Straightening and Cutting
Where required, round bars can be straightened and cut to specified lengths. Cut-to-length supply can help customers reduce additional preparation work before machining and fabrication.
7. Inspection
The finished product can be checked according to the applicable order requirements. Dimensional checks, surface inspection and material documentation support can be provided as applicable.
Advantages of 4140 Alloy Steel
4140 alloy steel is widely selected for demanding engineering applications because of its balanced mechanical characteristics. The major advantages of 4140 Round Bar include:
- High Strength: Suitable heat treatment can provide high strength for heavily loaded mechanical components.
- Good Toughness: 4140 provides a useful combination of strength and toughness for demanding engineering applications.
- Wear Resistance: Appropriately processed 4140 steel can provide good resistance to mechanical wear.
- Heat-Treatment Capability: The material can be supplied in different conditions to meet application-specific requirements.
- Machining Capability: Suitable material conditions allow 4140 to be machined into a wide range of engineering components.
- Versatile Applications: The material is used in automotive, machinery, construction, agriculture, mining, oil & gas and general engineering.
- Multiple Surface Finishes: Bright, black, forged and turned bright finishes can be supplied according to requirements.
- Wide Size Availability: Different diameters and lengths can be supplied subject to manufacturing capability and availability.
4140 Round Bar Applications
4140 Round Bar is used for manufacturing components that require a suitable combination of strength, toughness and wear resistance. Its applications extend across several industrial sectors.
Automotive Applications
4140 steel can be used for shafts, axles, gears, crankshafts, pins and other automotive components requiring suitable mechanical properties.
Industrial Machinery
Machine manufacturers use 4140 Round Bar for shafts, gears, rollers, drive components, pins and other mechanical parts exposed to operational loads.
Construction Equipment
4140 can be used for selected pins, shafts, axles and mechanical components in construction and heavy equipment where strength and toughness are required.
Oil & Gas Equipment
4140 alloy steel is used for selected mechanical components and equipment parts in oil and gas applications. The exact material condition and specification should be selected according to the operating requirements.
Mining Equipment
Mining equipment operates under demanding mechanical conditions. 4140 Round Bar can be used for suitable shafts, pins, gears and other high-strength components.
Agricultural Machinery
4140 steel can be used in agricultural machinery for shafts, axles, pins, gears and other components exposed to repeated mechanical loading.
General Engineering
The material is also used extensively for general engineering components, fabricated parts and machined components where appropriate strength and toughness are required.
4140 Round Bar Heat Treatment
Heat treatment plays an important role in achieving the required mechanical properties of 4140 alloy steel. Depending on the application, 4140 Round Bar can be supplied in different conditions such as annealed, normalized, hardened and tempered or quenched and tempered.
Annealed 4140 is generally selected when a softer material condition is required for machining. Normalized 4140 can provide a suitable material structure and mechanical condition. Quenched and tempered 4140 can be selected when higher strength and hardness are required together with controlled toughness.
The appropriate heat-treatment condition should be determined according to the component design, required mechanical properties, hardness, machining process and operating environment.
4140 Round Bar Surface Finishes
As a 4140 Manufacturer, we support different surface requirements depending on the product specification and customer application.
- Bright Finish: A cleaner and more controlled surface condition suitable for specified engineering requirements.
- Black Finish: A commonly supplied hot-worked surface condition.
- Forged Finish: Used for forged product requirements and heavy engineering applications.
- Turned Bright Finish: A machined surface condition offering improved dimensional and surface control.
4140 Manufacturer for Customized Requirements
Different industries require different dimensions and material conditions. Super Metal Manufacturing Co. supports customized requirements based on diameter, length, quantity, surface finish, heat-treatment condition and applicable specification.
Customers can provide technical drawings, purchase specifications or dimensional details for review. Depending on the requirement, material can be prepared as standard-length bars or cut-to-length products.
Our services are suitable for OEMs, engineering companies, machinery manufacturers, fabricators, distributors, stockists and industrial buyers requiring 4140 alloy steel products.
4140 Quality Assurance and Material Documentation
Quality control is an important part of alloy steel manufacturing and supply. Super Metal Manufacturing Co. focuses on product identification, dimensional consistency, surface quality and applicable documentation throughout the supply process.
A Mill Test Certificate (MTC) can be supplied according to the applicable order requirement. Third-party inspection can also be coordinated when specifically requested by the customer.
Available Quality Documents
- Mill Test Certificate
- Quality Certificate
- Inspection Reports
- Third-Party Inspection Reports on Request
- Material Traceability Documentation as Applicable
4140 Manufacturer with Export Support
In addition to manufacturing and supply, Super Metal Manufacturing Co. supports international customers requiring 4140 alloy steel products. Export orders can be prepared with suitable industrial packing and shipping documentation according to the destination and buyer's requirements.
Products may be packed in steel bundles, wooden crates, skids and waterproof protective wrapping depending on the product and transportation requirements. Appropriate identification and packing instructions can be followed for international shipments.
Alloy Steel 4140 Round Bars Dimensions Standard
|
Diameter or Width (mm) |
Weight per meter | Sectional Area | Perimeter |
|
Round (kg) |
Round (cm²) |
Round (cm) |
|
| 5.0 | 0.15 | 0.20 | 1.57 |
| 5.5 | 0.19 | 0.24 | 1.78 |
| 6.0 | 0.22 | 0.28 | 1.88 |
| 7.0 | 0.30 | 0.38 | 2.20 |
| 8.0 | 0.39 | 0.50 | 2.51 |
| 9.0 | 0.50 | 0.64 | 2.83 |
| 10 | 0.63 | 0.79 | 3.14 |
| 11 | 0.75 | 0.95 | 3.46 |
| 12 | 0.89 | 1.13 | 3.77 |
| 14 | 1.21 | 1.54 | 4.40 |
| 16 | 1.58 | 2.01 | 5.03 |
| 18 | 2.00 | 2.54 | 5.65 |
| 20 | 2.47 | 3.14 | 6.28 |
| 22 | 2.98 | 3.80 | 6.91 |
| 25 | 3.85 | 4.91 | 7.85 |
| 28 | 4.83 | 6.16 | 8.80 |
| 32 | 6.31 | 8.04 | 10.05 |
| 36 | 7.99 | 10.18 | 11.31 |
| 40 | 9.86 | 12.57 | 12.57 |
| 45 | 12.49 | 15.90 | 14.14 |
| 50 | 15.41 | 19.64 | 15.71 |
| 56 | 19.34 | 24.63 | 17.59 |
| 63 | 24.47 | 31.17 | 19.79 |
| 71 | 31.08 | 39.59 | 22.31 |
| 80 | 39.46 | 50.27 | 25.13 |
Why Choose Super Metal Manufacturing Co. as Your 4140 Manufacturer?
- Established Since 1965: Long-standing experience in metal products and industrial supply.
- 4140 Manufacturing Expertise: Support for 4140 alloy steel round bars and related product requirements.
- Customized Supply: Different sizes, lengths, finishes and material conditions can be discussed.
- Quality Documentation: MTC and applicable inspection documents can be provided according to customer requirements.
- Export Support: Industrial packing, documentation and shipment coordination for international customers.
- Industrial Applications: Suitable supply support for automotive, machinery, construction, mining, oil & gas and general engineering requirements.
Certifications & Quality Assurance
We maintain quality-focused processes for alloy steel products and can provide applicable documentation according to customer requirements. Third-party inspection can be arranged when requested.
- Mill Test Certificate
- Quality Management / ISO Certificate
- Third-Party Inspection Reports Available on Request
Export Packing & Shipping
4140 Round Bars can be packed according to the requirements of the product, destination and transportation method. Typical export packing can include steel bundles, wooden crates, skids and waterproof protective wrapping. Fumigated wooden packing can be arranged where required for international shipments.
MOQ, Lead Time & Payment
Minimum Order Quantity (MOQ): Contact us for the applicable MOQ based on grade, size, quantity and availability.
Lead Time: Lead time depends on stock availability, quantity, customization, inspection and manufacturing requirements. The confirmed delivery schedule can be provided with the quotation.
Payment Terms: Payment terms can be discussed according to order quantity, destination and commercial requirements.
HS Code & Export Documentation
The applicable HS classification depends on the exact product form and destination country's customs requirements. Export documentation can include Commercial Invoice, Packing List, Bill of Lading / AWB, Mill Test Certificate and Certificate of Origin (COO), where applicable.
Typical Applications
4140 Round Bars are commonly used for shafts, gears, axles, crankshafts, pins, studs, fasteners, hydraulic components and other mechanical parts. Industries include automotive, engineering, construction, agriculture, mining, oil & gas and industrial machinery.
Export Destinations
Super Metal Manufacturing Co. supports international enquiries for 4140 alloy steel products from customers in Europe, the Middle East, North America, Southeast Asia, Africa and other global markets. Product specifications, packing and documentation can be discussed according to the destination requirements.
Frequently Asked Questions About 4140 Manufacturer
What is 4140 Round Bar?
4140 Round Bar is a chromium-molybdenum alloy steel product supplied in a circular cross-section. It is commonly used for shafts, gears, axles, pins, crankshafts and other mechanical components requiring suitable strength, toughness and wear resistance.
Who is a 4140 Manufacturer?
A 4140 Manufacturer produces or processes 4140 alloy steel products according to specified dimensions, material conditions, surface finishes and applicable standards. Super Metal Manufacturing Co. supplies 4140 Round Bars and related alloy steel products for industrial requirements.
What are the common equivalent designations of 4140?
Commonly associated designations include AISI 4140, SAE 4140 and UNS G41400. Other international designations such as EN 41Cr4 and 42CrMo4 may be specified depending on the applicable standard and customer requirement. Equivalence should be confirmed against the specific material specification before ordering.
What are the applications of 4140 Round Bar?
4140 Round Bar is commonly used for shafts, gears, axles, crankshafts, pins, studs, fasteners, hydraulic components and other engineered mechanical parts. It is used across automotive, machinery, construction, agriculture, mining and general engineering sectors.
What heat-treatment conditions are available for 4140?
Depending on the requirement, 4140 can be supplied in conditions such as annealed, normalized, hardened and tempered, or quenched and tempered. The appropriate condition depends on the required hardness, strength, toughness and machining requirements.
Can 4140 Round Bar be supplied in custom sizes?
Yes. Customers can discuss customized diameters, lengths, quantities, surface finishes and material conditions. Cut-to-length requirements can also be discussed depending on the order and manufacturing capability.
Do you provide a Mill Test Certificate for 4140 steel?
Yes. A Mill Test Certificate can be provided according to the applicable purchase requirement. Third-party inspection and additional quality documentation can also be coordinated when requested.
How can I request a quotation for 4140 Round Bar?
Send your required diameter, length, quantity, surface finish, heat-treatment condition, applicable standard and delivery location to Super Metal Manufacturing Co. by email or WhatsApp. Our team can review the requirement and provide availability and pricing information.