4140 Hollow Bar Exporter
4140 Hollow Bar Exporter Super Metal Manufacturing Co. supplies high-strength AISI 4140 hollow bars for engineering, automotive, hydraulic, machinery, construction, oil and gas, mining and industrial applications. AISI 4140 is a chromium-molybdenum alloy steel known for its high strength, toughness, hardenability and good wear resistance. Our 4140 Hollow Bars are available in different outside diameters, inside diameters, wall thicknesses and lengths according to customer requirements.
4140 Hollow Bars are suitable for applications where a strong alloy steel hollow section is required. The hollow construction can provide material efficiency and reduced weight in suitable component designs while maintaining the required mechanical performance. The material can also be supplied in different heat-treated conditions depending on the application and technical specification.
As an experienced 4140 Hollow Bar Exporter, Super Metal Manufacturing Co. serves international manufacturers, engineering companies, OEMs, fabricators, distributors and industrial buyers. We support standard and customized requirements, including specified outside diameter, inside diameter, wall thickness, length, quantity, surface finish and heat-treatment condition.
Our export supply process is designed to support international buyers with product documentation, inspection arrangements, suitable export packing and shipping coordination. Customers can provide their complete technical requirements to receive product availability, commercial quotation and delivery information.
Our 4140 Hollow Bars are supplied with attention to dimensional accuracy, surface finish and material quality. Depending on customer requirements, products can be supplied in annealed, normalized, hardened and tempered or quenched and tempered conditions. Customized sizes and cut-to-length services can also be discussed.
Super Metal Manufacturing Co. supports customers requiring machining-ready alloy steel hollow bars for demanding engineering applications. Our team can assist customers in selecting suitable dimensions and material conditions based on the intended application, manufacturing process and technical specification.
As a global 4140 Hollow Bar Exporter, we supply products to customers across the Middle East, Europe, Africa, Asia and North America. Export orders can be arranged according to required grade, dimensions, quantity, inspection requirements, packing method and delivery destination.
What is a 4140 Hollow Bar?
A 4140 Hollow Bar is a hollow alloy steel product manufactured from AISI 4140 chromium-molybdenum steel. It contains an internal bore and is used in engineering applications where a combination of strength, toughness, machinability and material efficiency is required.
AISI 4140 is commonly identified as UNS G41400 and is frequently associated with EN 19, 42CrMo4 and SCM440 depending on the applicable standard. The exact equivalent grade should always be confirmed against the required material specification and purchasing standard.
The chromium and molybdenum content of 4140 steel contributes to its hardenability and mechanical performance. The material is suitable for heat treatment when higher strength, hardness and wear resistance are required for specific applications.
4140 Hollow Bar Exporter and Supplier
Super Metal Manufacturing Co. is a reliable 4140 Hollow Bar Exporter and Supplier serving industrial customers requiring high-strength alloy steel hollow products. We supply material for machinery manufacturers, automotive companies, hydraulic equipment manufacturers, engineering companies, fabricators and distributors.
Our 4140 Hollow Bars can be supplied in standard and customized dimensions. Buyers can specify outside diameter, inside diameter, wall thickness, length, quantity, heat-treatment condition and surface finish when requesting a quotation.
We can also coordinate inspection and material documentation requirements for export orders. This helps international buyers receive products according to their agreed technical and commercial specifications.
Advantages of 4140 Hollow Bars
4140 Hollow Bars offer a combination of alloy steel strength and hollow geometry, making them suitable for selected high-performance engineering applications. The material can be heat treated to obtain the desired mechanical properties according to component requirements.
- High tensile strength
- Good yield strength
- Excellent hardenability
- Good toughness
- Good wear resistance
- Suitable for heat treatment
- Good mechanical load resistance
- Suitable for heavy-duty engineering applications
- Suitable for machining applications
- Reduced material weight in suitable component designs
- Available in customized dimensions
- Suitable for international export requirements
4140 Hollow Bar Standards and Equivalent Grades
| 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 |
4140 Hollow Bar Chemical Composition
4140 alloy steel contains carbon, silicon, manganese, chromium and molybdenum. These elements contribute to the strength, hardenability, toughness and wear resistance of the material.
| Element | Composition |
|---|---|
| Carbon (C) | 0.38 – 0.43% |
| Silicon (Si) | 0.15 – 0.35% |
| Manganese (Mn) | 0.75 – 1.00% |
| Chromium (Cr) | 0.80 – 1.10% |
| Molybdenum (Mo) | 0.15 – 0.25% |
| Phosphorus (P) | 0.035% Max |
| Sulfur (S) | 0.040% Max |
4140 Hollow Bar Mechanical Properties
The mechanical properties of 4140 Hollow Bars depend on the section size and material condition. Heat treatment can be used to obtain a suitable balance between strength, hardness and toughness.
| Property | Typical Condition |
|---|---|
| Tensile Strength | Depending on heat-treatment condition |
| Yield Strength | Depending on section size and condition |
| Elongation | Depending on material condition |
| Hardness | Depending on heat treatment |
| Impact Toughness | Depending on material condition |
4140 Hollow Bar Manufacturing Process
The manufacturing process of 4140 Hollow Bars begins with alloy steel material having the required chemical composition. Controlled heating and forming operations are used to produce the required hollow geometry and dimensions.
Depending on the required product specification, suitable hot working, piercing, forging, machining or other controlled manufacturing processes may be used. The outside diameter, inside diameter and wall thickness are controlled during production to meet the specified dimensional requirements.
After forming, 4140 Hollow Bars can undergo heat treatment such as annealing, normalizing, hardening and tempering or quenching and tempering. The selected condition depends on the required mechanical properties and intended application.
Final manufacturing operations may include straightening, cutting, machining and surface finishing. Quality inspection can include dimensional checks, surface inspection, chemical analysis, hardness testing and mechanical testing according to customer requirements.
4140 Hollow Bar Applications
4140 Hollow Bars are used in demanding industrial and engineering applications where high strength and toughness are required. Their hollow construction can provide material efficiency for suitable component designs.
- Automotive Components: Shafts, axles, sleeves and other high-strength components.
- Hydraulic Equipment: Hydraulic components, sleeves and selected cylinder components.
- Industrial Machinery: Machine components, couplings, shafts and mechanical parts.
- Oil & Gas: Selected high-strength equipment and machinery components.
- Construction Equipment: Components exposed to heavy mechanical loads.
- Mining Equipment: Selected heavy-duty machinery components.
- Power Transmission: Shafts, sleeves and selected mechanical components.
- General Engineering: Machined and fabricated high-strength components.
- Manufacturing: Components requiring high-strength alloy steel material.
4140 Hollow Bar Heat Treatment
4140 alloy steel is suitable for heat treatment processes designed to modify hardness and mechanical properties. Depending on the application, the material may be supplied annealed, normalized, hardened and tempered or quenched and tempered.
Quenching and tempering can be used when higher strength and hardness are required while maintaining suitable toughness. The final material condition should be specified according to the applicable standard and application requirements.
Alloy Steel 4140 Hollow Bars Dimensions Standard
| Outside Diameter | Inside Diameter | Wall Thickness | Length |
|---|---|---|---|
| As per requirement | As per requirement | As per requirement | 1000 mm to 6000 mm |
| Custom OD | Custom ID | Custom Thickness | Cut-to-Length Available |
4140 Hollow Bars can be supplied in different outside diameters, inside diameters, wall thicknesses and lengths according to stock availability and customer requirements. Customized dimensions and cut-to-length services can be discussed for specific engineering applications.
Certifications & Quality Assurance
We maintain robust quality processes and can provide the following documents with shipments:
- Mill Test Certificate
- Quality Management: ISO certificate
- Third-party inspection reports (TPI) available on request
- Chemical Composition Report
- Mechanical Test Report
- Dimensional Inspection Report
Export Packing & Shipping
Typical export packing includes steel bundles, wooden crates or skids, waterproof wrapping and fumigated wood where required. We ship from the nearest major port and can handle CIF, FOB, EXW and other agreed delivery terms depending on buyer preference.
MOQ, Lead Time & Payment
Minimum Order Quantity (MOQ): Contact us for exact MOQ per size and grade.
Lead Time: In-stock items: 1–3 weeks, subject to inspection and documentation. Mill-direct and custom production: 3–8 weeks depending on order size and specifications.
Payment Terms: Contact us to choose suitable payment terms.
HS Code & Export Documentation
HS classification for alloy steel hollow products may vary according to the exact product form and destination-country customs requirements. Documents supplied can include Commercial Invoice, Packing List, Bill of Lading / AWB, Mill Test Certificate and Certificate of Origin (COO), where required.
Typical Applications
4140 Hollow Bars are commonly used for shafts, sleeves, axles, hydraulic components, machine parts, automotive components, construction equipment, mining machinery, oil and gas equipment and other high-strength engineering components.
Export Destinations (Selected)
We export 4140 Hollow Bars to international markets across Europe, the Middle East, Africa, Asia and North America. Export requirements can be arranged according to destination country, product dimensions, quantity, inspection requirements and delivery terms.
Frequently Asked Questions
What are 4140 Hollow Bars?
4140 Hollow Bars are high-strength chromium-molybdenum alloy steel hollow bars used for engineering, automotive, hydraulic, machinery, construction, oil and gas and industrial applications.
What is the equivalent grade of 4140 Hollow Bar?
AISI 4140 is identified as UNS G41400 and is commonly compared with 42CrMo4, 1.7225, EN19 and SCM440 depending on the applicable material standard.
Can 4140 Hollow Bars be heat treated?
Yes. 4140 Hollow Bars can be supplied in suitable heat-treated conditions including annealed, normalized, hardened and tempered and quenched and tempered conditions.
What are 4140 Hollow Bars used for?
They are commonly used for shafts, sleeves, axles, hydraulic components, automotive parts, industrial machinery, construction equipment, mining machinery and other high-strength engineering components.
Can you supply customized 4140 Hollow Bar sizes?
Yes. Customized outside diameter, inside diameter, wall thickness and cut-to-length requirements can be discussed according to customer drawings and technical specifications.
How can I request a price quotation?
You can share your grade, outside diameter, inside diameter, wall thickness, quantity and delivery location via WhatsApp, email or our Request a Quote form.
What details do you need to provide a quotation?
Please provide the required grade, dimensions, quantity, preferred standard, heat-treatment condition and delivery location.
What payment terms do you offer?
We accept bank transfer (TT), LC and advance payment depending on order size, buyer requirements and agreed commercial terms.
How long does delivery take?
Stock items can generally be dispatched within the agreed lead time after order confirmation, while custom manufacturing may require additional time depending on specifications, quantity, heat treatment and inspection.
Can I get a sample before ordering?
Yes. Sample requirements can be discussed with our sales team depending on product dimensions, quantity and application.
How do you pack 4140 Hollow Bars for export?
We use suitable export packing such as steel bundles, wooden boxes or pallets, waterproof HDPE wrapping and proper product identification for safe transportation.
Do you offer bulk order discounts?
Yes. Competitive pricing can be discussed for bulk quantities, repeat buyers and long-term supply contracts.