4140 Round Bars Stockist and Exporter
Super Metal Manufacturing Co. Since 1965 is an experienced 4140 Round Bars Stockist and Exporter offering chromium-molybdenum alloy steel round bars for industrial, engineering, automotive, construction, machinery, oil & gas, petrochemical, mining and fabrication applications.
As a specialized stockist, we cater to requirements for different diameters, lengths, finishes and material conditions. Customers can share their required grade, size, quantity and application so that the appropriate material can be offered according to specification and availability.
Our export supply service supports customers who require alloy steel round bars from India for international projects and manufacturing requirements. We can coordinate product preparation, cutting, inspection, documentation and export packing according to the purchase order.
What is 4140 Round Bar?
4140 Round Bar is a chromium-molybdenum alloy steel round bar commonly identified by AISI 4140, SAE 4140 and UNS G41400. It is recognized for its combination of strength, toughness and hardenability.
Chromium and molybdenum are important alloying elements in 4140 steel. They contribute to hardenability and allow the material to achieve different mechanical properties through suitable heat treatment.
4140 Round Bars can be processed by turning, drilling, milling, threading, grinding and other machining operations under appropriate material conditions. This makes the material useful for manufacturing precision mechanical components.
4140 is commonly associated with grades such as EN19, 42CrMo4 and DIN 1.7225. Exact grade equivalence should be confirmed against the applicable standard, chemical composition and mechanical property requirements.
Advantages of 4140 Round Bars
4140 Alloy Steel Round Bars provide a useful combination of mechanical properties for demanding engineering applications. Some of the major advantages include:
- High Strength: Suitable for components exposed to high mechanical loads.
- Good Toughness: Provides a balance of strength and toughness after appropriate heat treatment.
- Good Hardenability: Chromium and molybdenum improve hardenability characteristics.
- Wear Resistance: Heat-treated 4140 can provide improved resistance to mechanical wear.
- Fatigue Performance: Suitable for components subjected to repeated loading and stresses.
- Machinability: Can be machined into a wide range of engineering components.
- Heat Treatment Capability: Can be supplied in different conditions according to the required mechanical properties.
4140 Round Bars Manufacturing Process
The processing of 4140 Round Bars involves several controlled stages to achieve the required dimensions, surface condition and mechanical properties. The exact process depends on the product size, grade specification and required supply condition.
Raw Material Selection
Suitable chromium-molybdenum alloy steel is selected according to the required 4140 specification. Material identification and traceability can be maintained according to customer requirements.
Heating
The alloy steel is heated under controlled conditions before hot working. Proper heating supports consistent rolling or forging operations.
Hot Rolling
During hot rolling, heated steel is passed through rolling equipment to achieve the required round profile and approximate dimensions.
Forging
Forging can be used when forged 4140 material is required for specific heavy-duty engineering applications.
Heat Treatment
Depending on the specified condition, 4140 Round Bars can undergo annealing, normalizing, hardening, quenching and tempering.
Cutting and Straightening
Bars can be straightened and cut to standard or customer-specified lengths according to order requirements.
Surface Finishing
4140 Round Bars can be supplied with black, bright, turned, peeled, ground or forged surfaces depending on size and application.
Inspection
Inspection may include chemical analysis, dimensional inspection, surface inspection and mechanical testing according to the applicable specification and customer requirements.
4140 Round Bars Material Specification
| Grade | AISI 4140 / SAE 4140 |
|---|---|
| Material Type | Chromium Molybdenum Alloy Steel |
| Material Number | 1.7225 / 42CrMo4 |
| UNS | G41400 |
| Standards | ASTM, ASME, AISI, SAE, EN, DIN, JIS, BS |
| Diameter | 5 mm to 500 mm |
| Length | 1000 mm to 6000 mm |
| Finish | Bright, Black, Forged, Turned Bright |
| Form | Round, Billet, Ingot, Forging |
| Supply Condition | Annealed, Normalized, Hardened & Tempered, Quenched & Tempered |
AISI 4140 / SAE 4140 / EN19 / 42CrMo4 Round 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 Round Bars Chemical Composition
4140 alloy steel contains carbon, manganese, silicon, chromium and molybdenum. These elements contribute to the strength, hardenability and overall mechanical performance of the material.
The following represents commonly specified composition ranges. Actual chemistry should always be confirmed against the applicable material specification and Mill Test Certificate.
| 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 |
4140 Round Bars Mechanical Properties
Mechanical properties vary depending on the material condition, heat treatment, section size and applicable specification. Heat-treated 4140 can provide high strength and hardness while retaining suitable toughness.
| Property | Typical Value / Range |
|---|---|
| Tensile Strength | 850 – 1000 MPa |
| Hardness (Q&T) | 28 – 34 HRC |
| Material Condition | As Specified / Heat Treated |
4140 Round Bars Applications
4140 Round Bars are used for a wide range of components where strength, toughness and hardenability are important. The material is particularly suitable for mechanically loaded components subjected to impact, torsion, repeated loading and wear.
Automotive Industry
4140 Round Bars are used for suitable axles, shafts, gears, pins, crankshafts and other automotive components.
Oil & Gas Industry
The material can be selected for suitable shafts, pins, studs and other mechanical components used in oil and gas equipment according to the required specification.
Heavy Machinery
4140 alloy steel is widely used for shafts, gears, rollers, spindles, pins and other components subjected to substantial mechanical loads.
Construction Equipment
The material can be used for suitable pins, axles, shafts, rollers and other construction equipment components.
Mining Applications
4140 Round Bars can be used for selected mining and material-handling components where high strength and toughness are required.
General Engineering
Engineering and fabrication companies use 4140 Round Bars for manufacturing customized machine parts, shafts, studs, pins and other mechanical components.
4140 Round Bars Heat Treatment
Heat treatment is an important process for achieving the desired combination of strength, hardness and toughness in 4140 alloy steel. The selected heat-treatment process depends on the final application and required mechanical properties.
Annealing
Annealing produces a relatively softer material condition and can improve machinability and support subsequent processing.
Normalizing
Normalizing can provide a refined and uniform microstructure and is used as a suitable material conditioning process.
Hardening
Hardening increases the hardness and strength of 4140 through controlled heating followed by suitable cooling.
Quenching
Quenching is used as part of the hardening process to achieve the required hardness and mechanical characteristics.
Tempering
Tempering after hardening helps obtain an appropriate balance of strength, hardness and toughness.
4140 Round Bars Stockist
Super Metal Manufacturing Co. is a reliable 4140 Round Bars Stockist from Mumbai, India, supplying alloy steel round bars to manufacturers, engineering companies, fabricators, distributors, OEMs and industrial buyers.
We can support requirements for different diameters, lengths, finishes and material conditions, subject to stock availability and the applicable material specification.
Customers can provide their required grade, diameter, length, quantity, finish and heat-treatment condition for checking availability and commercial requirements.
4140 Round Bars Exporter
As an experienced 4140 Round Bars Exporter, Super Metal Manufacturing Co. supplies alloy steel round bars from India to international customers. Export orders can be prepared according to the required specifications, dimensions, quantity, packaging and documentation.
We supply AISI 4140, SAE 4140, EN19 and 42CrMo4 Round Bars for engineering, automotive, machinery, oil and gas, construction, mining, fabrication and general industrial applications.
4140 Round Bars Quality Assurance
Quality and traceability are important when supplying alloy steel products. Relevant documentation can be provided according to the applicable material specification and customer purchase order.
- Mill Test Certificate
- Chemical Composition Report
- Mechanical Test Report
- Dimensional Inspection Report
- Surface Inspection
- Material Traceability
- Third-Party Inspection on Request
4140 Round Bars Export Packing
4140 Round Bars can be packed according to product dimensions, quantity and transportation requirements. Depending on the order, packing may include steel bundles, wooden crates or skids, protective wrapping and waterproof packaging.
Export packing requirements can be discussed according to the customer's destination, transportation method and handling requirements.
MOQ, Lead Time & Payment
Minimum Order Quantity:
MOQ depends on diameter, quantity, stock availability and production
requirements.
Lead Time:
Lead time depends on stock availability, quantity, cutting,
inspection, heat treatment and documentation requirements.
Payment Terms:
Commercial payment terms can be discussed according to order
quantity, destination and customer requirements.
Why Choose Super Metal for 4140 Round Bars?
- Since 1965: Decades of experience in the metal industry.
- Reliable Stockist: 4140 Alloy Steel Round Bars in various sizes and conditions.
- Export Supply: Supply from Mumbai, India to international markets.
- Multiple Sizes: Different diameters and lengths according to specification and availability.
- Multiple Finishes: Bright, black, forged and turned finishes.
- Heat Treatment: Annealed, normalized and heat-treated conditions according to requirements.
- Quality Documentation: Relevant material and inspection documentation can be supplied.
- Customized Requirements: Cut-to-length and other requirements can be discussed.
Frequently Asked Questions (FAQs)
Who is a 4140 Round Bars Stockist and Exporter?
Super Metal Manufacturing Co. Since 1965 is an experienced 4140 Round Bars Stockist and Exporter from Mumbai, India, supplying 4140 Alloy Steel Round Bars to domestic and international customers.
What is 4140 Round Bar?
4140 Round Bar is a chromium-molybdenum alloy steel round bar commonly specified as AISI 4140, SAE 4140 and UNS G41400. It is widely used for high-strength mechanical and engineering components.
What are the equivalent grades of 4140 Round Bars?
Commonly associated designations include AISI 4140, SAE 4140, EN19, 42CrMo4 and DIN 1.7225. Exact equivalence should be verified against the applicable material standard and chemical composition.
What sizes of 4140 Round Bars are available?
4140 Round Bars can be supplied in different diameters and lengths according to the required specification, stock availability and customer requirements. Customers can contact us with their required size and quantity for availability.
What are 4140 Round Bars used for?
4140 Round Bars are used for shafts, gears, axles, pins, spindles, rollers, crankshafts, studs and other mechanically loaded components used in automotive, oil and gas, machinery, construction, mining and general engineering applications.
Can 4140 Round Bars be supplied heat treated?
Yes. Depending on the required specification, 4140 Round Bars can be supplied in annealed, normalized, quenched and tempered, or hardened and tempered conditions.
What surface finishes are available for 4140 Round Bars?
4140 Round Bars can be supplied in bright, black, forged, turned, peeled, ground and other specified finishes depending on size and customer requirements.
Do you provide Mill Test Certificates?
Yes. Relevant material and inspection documentation can be supplied according to the applicable material specification and purchase order requirements.
Where is Super Metal Manufacturing Co. located?
Super Metal Manufacturing Co. is located at 7, Kika Street, Gulalwadi, 2/1, Kikabhai Mansion, Mumbai - 400004, India.
How can I request a quotation for 4140 Round Bars?
You can send the required grade, diameter, length, quantity, finish and heat-treatment condition by email or WhatsApp to request availability and pricing.