EN8 Round Bar Supplier Mumbai for Shafts, Machinery and General Engineering
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Meta Description: EN8 Round Bar Supplier Mumbai supplying EN8 080M40 round bars for shafts, axles, gears, pins, machinery parts, automotive components and general engineering.
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Table of Contents
- What Is EN8 Round Bar?
- EN8 Steel 080M40 and Its Specification
- EN8 Chemical Composition
- EN8 Round Bar Mechanical Properties
- EN8 Steel Applications
- EN8 Round Bar Sizes and Finishes
- EN8 Heat Treatment
- EN8 Machining and Fabrication
- EN8 Round Bar Price Factors
- How to Buy EN8 Round Bar
- EN8 Round Bar Supplier in Mumbai
- Frequently Asked Questions
- Request a Quote
What Is EN8 Round Bar?
EN8 Round Bar is a medium-carbon steel round bar widely used for engineering components that require more strength than low-carbon mild steel.
EN8 is commonly associated with the designation 080M40 under the older BS 970 system. Published materials identify 080M40 as a medium-carbon steel used for general engineering applications, while the historical BS 970-1:1991 standard has since been withdrawn. (BSI)
In the market, buyers still frequently use terms such as EN8 Steel Round Bar, EN8 080M40 Round Bar and EN8 Carbon Steel Round Bar when specifying this material.
The grade is particularly useful for components that need a practical balance between strength, machinability and cost.
EN8 Steel 080M40 and Its Specification
When purchasing EN8 Round Bar, it is important to distinguish between the commercial grade name and the actual specification mentioned in the purchase order.
A typical enquiry may state:
Material: EN8
Grade: 080M40
Product: Round Bar
Diameter: As required
Length: As required
Condition: As required
Finish: As required
Quantity: As required
Historical BS 970 documentation identifies 080M40 among medium-carbon engineering steels and includes requirements relating to chemical composition, testing and mechanical properties. (BSI)
Because BS 970-1:1991 was withdrawn in 1996 and BS 970-1:1996 was later withdrawn in 2006, buyers should specify the exact current material requirement used by their project, drawing or customer specification rather than assuming that “EN8” alone defines every delivery condition. (BSI)
This is especially important for OEM and export orders.
EN8 Chemical Composition
EN8 is a medium-carbon engineering steel. Published 080M40 data commonly gives the following composition range:
| Element | Typical Composition |
|---|---|
| Carbon (C) | 0.36–0.44% |
| Silicon (Si) | 0.10–0.40% |
| Manganese (Mn) | 0.60–1.00% |
| Sulphur (S) | 0.05% max |
| Phosphorus (P) | 0.05% max |
| Iron (Fe) | Balance |
These values are consistent with commonly published EN8/080M40 product data. (Vishal Steel)
Carbon and manganese are particularly relevant to the strength and hardening response of this medium-carbon steel.
For a production requirement, the Mill Test Certificate (MTC) should be used to verify the chemistry of the supplied heat.
EN8 Round Bar Mechanical Properties
EN8 mechanical properties vary with section size and delivery condition.
Published BS 970 data for 080M40 in normalized condition gives a typical minimum tensile strength of around 550 MPa, with yield strength around 280 MPa for the specified section range in that table. Cold-worked material can achieve higher strength, while heat treatment can further alter the mechanical properties. (AZoM)
This means there is no single mechanical-property value that should be applied to every EN8 Round Bar.
The main engineering characteristics to consider are:
| Property | Importance |
|---|---|
| Tensile Strength | Overall load-bearing capability |
| Yield Strength | Resistance to permanent deformation |
| Hardness | Wear and machining considerations |
| Ductility | Ability to deform before fracture |
| Machinability | Important for turned and milled components |
| Hardenability | Relevant for selected heat-treatment applications |
For critical components, use the certified properties for the actual bar condition and section size rather than a generic website value.
EN8 Steel Applications
EN8 Round Bar is popular because it offers a practical combination of strength and machinability for general engineering.
Shafts
EN8 is widely used for machined shafts where medium strength and dimensional accuracy are required.
Axles
Axles and similar rotating or load-bearing components are common applications for medium-carbon engineering steels.
Gears
Depending on the design and required surface performance, EN8 can be used for selected gears and gear-related components.
Pins and Bushes
The material can be machined into pins, bushes and other cylindrical engineering components.
Bolts and Studs
EN8 can also be considered for selected fastener and stud applications where its mechanical characteristics are appropriate.
Automotive Components
The grade is commonly used for components in automotive and general engineering applications. Published EN8 product information identifies shafts, axles, machinery parts and automotive components among typical uses. (Vishal Steel)
General Machinery
Machine builders and fabrication companies can use EN8 Round Bar for various components where mild steel does not provide enough strength.
EN8 Round Bar Sizes and Finishes
Industrial buyers may require EN8 in different diameters, lengths and finishes depending on the manufacturing process.
Common requirements include:
- EN8 Black Round Bar
- EN8 Bright Round Bar
- Cold Drawn EN8 Round Bar
- Peeled EN8 Round Bar
- Ground EN8 Round Bar
- Cut-to-Length EN8 Bar
Published EN8 market specifications show supply in a broad range of diameters and finishes, including hot-rolled and cold-drawn forms. (TradeIndia)
For a machining application, surface finish and dimensional tolerance can be as important as the nominal diameter.
For example, a production component may require a bright or ground bar to reduce subsequent machining allowance.
You can also review Manan Steel & Metals’ broader Round Bar product range when preparing a requirement for EN-series or other engineering round bars.
EN8 Heat Treatment
One of the useful characteristics of EN8 is that its properties can be modified through suitable heat treatment.
Depending on the application and section size, EN8 may be supplied or processed in conditions such as:
Normalized condition:
Normalizing is used to refine the microstructure and produce a more uniform condition.
Hardening:
Heating followed by quenching can increase hardness and strength, although the achievable result depends on section size and processing conditions.
Tempering:
Tempering after hardening is used to adjust the balance between hardness, strength and toughness.
Induction or flame hardening:
Surface-hardening processes can be used for selected EN8 components where a harder surface is needed while retaining a tougher core.
Published EN8 data describes the use of heat treatment and induction or flame hardening for selected applications. (AZoM)
The exact heat-treatment cycle should be established for the required component, section size and final properties.
EN8 Machining and Fabrication
EN8 is commonly selected for machined engineering components because it provides a useful balance between strength and machinability.
Typical machining operations include:
- Turning
- Milling
- Drilling
- Boring
- Threading
- Grinding
The actual cutting parameters should be selected according to the bar condition, diameter, machine, tooling and required finish.
Welding requires more attention than low-carbon mild steel because EN8 has a higher carbon content. Published information on medium-carbon steels notes that increasing carbon content and hardenability can increase the risk of unfavorable structures in the weld heat-affected zone. (AZoM)
For welded assemblies, the applicable welding procedure should therefore be established according to the component design and service requirements.
EN8 Round Bar Price Factors
The EN8 Round Bar price depends on the complete purchase specification rather than simply the grade name.
Diameter
Larger-diameter bars contain more material and may have different processing costs.
Length
Standard bars and cut-to-length material can have different commercial pricing.
Finish
Black, bright, peeled and ground finishes involve different processing requirements.
Condition
As-rolled, normalized or cold-worked material may have different manufacturing costs and property requirements.
Quantity
Bulk industrial requirements and small quantities may be quoted differently.
Testing and Documentation
MTC, inspection, dimensional checks and other customer-specific requirements can affect the final quotation.
Market Conditions
Steel and raw-material market conditions also influence the final commercial price.
Therefore, buyers searching for EN8 Round Bar price in Mumbai should send the complete requirement for an accurate quotation.
How to Buy EN8 Round Bar
A good EN8 purchase enquiry should contain enough information for the supplier to identify the correct material and delivery condition.
Use this format:
Material: EN8 / 080M40
Product: Round Bar
Diameter: ___ mm
Length: ___ mm
Condition: As rolled / normalized / cold drawn / as specified
Finish: Black / bright / ground / as specified
Quantity: ___ kg / pieces
Testing: MTC / inspection / other
Application: Shaft / axle / gear / machinery part / other
If your requirement comes from an engineering drawing, include the drawing specification or material designation rather than relying only on the term “EN8.”
EN8 Round Bar Supplier in Mumbai
For companies searching for an EN8 Round Bar Supplier Mumbai, Manan Steel & Metals supplies round bars and specialty engineering materials for industrial requirements.
Manan’s published round-bar range covers multiple material families and engineering grades, with round-bar supply extending across a wide range of sizes and forms. (Manan Steel & Metals)
For an EN-series requirement, clearly mention the exact grade you need.
For EN8 Round Bar, the enquiry can specify:
EN8 / 080M40
Required diameter
Required length
Required condition
Finish
Quantity
Testing/documentation
Application
This makes it easier to distinguish EN8 from other EN-series materials and ensures the quotation is prepared against the correct requirement.
Frequently Asked Questions
What is EN8 Round Bar?
EN8 Round Bar is a medium-carbon steel round bar used for shafts, axles, pins, machinery parts, automotive components and other engineering applications.
What is the equivalent designation of EN8?
EN8 is commonly associated with 080M40 in the historical BS 970 designation system. Different specifications may use different designation systems, so the exact project requirement should be confirmed.
Is EN8 a stainless steel?
No. EN8 is a medium-carbon engineering steel, not a stainless steel. It is selected primarily for mechanical strength, machinability and suitability for engineering components.
Can EN8 Round Bar be heat treated?
Yes. EN8 can be subjected to heat-treatment processes such as normalizing, hardening and tempering. Surface-hardening methods such as induction hardening can also be used for selected components.
Where is EN8 Round Bar used?
Typical applications include shafts, axles, pins, gears, bolts, studs, machinery parts and selected automotive components. (Vishal Steel)
Is EN8 suitable for machining?
Yes. EN8 is widely used for machined engineering components and can be processed by turning, milling, drilling, boring and grinding, with cutting conditions selected for the material condition.
How can I get an EN8 Round Bar quotation in Mumbai?
Send the required diameter, length, quantity, condition, finish and testing requirements to Manan Steel & Metals for a quotation.
Request a Quote for EN8 Round Bar
Manan Steel & Metals
Shop No. 2, Hira Building, 97 Khetwadi Main Road (Nanubhai Desai Road), Girgaon, Mumbai – 400004, Maharashtra, India
Phone: 7977369869
Email: manansteel@gmail.com
Website: www.manansteel.com
For a faster quotation, send:
Material: EN8 / 080M40
Diameter: ___ mm
Length: ___ mm
Condition: ___
Finish: ___
Quantity: ___ kg / pieces
Testing: ___
Application: ___
For industrial procurement, specifying the complete requirement is the best way to receive a quotation for the correct EN8 Round Bar.