EN9 Round Bar Supplier Mumbai for Shafts, Gears and Wear-Resistant Components
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Meta Description: EN9 Round Bar Supplier Mumbai supplying EN9 070M55 round bars for shafts, gears, sprockets, cams, axles, machine parts and wear-resistant applications.
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Table of Contents
- What Is EN9 Round Bar?
- EN9 070M55 Steel Grade
- EN9 Chemical Composition
- EN9 Round Bar Mechanical Properties
- Why EN9 Is Used for Wear-Resistant Components
- EN9 Round Bar Applications
- EN9 Heat Treatment
- EN9 Machining and Weldability
- EN9 Round Bar Sizes and Finishes
- EN9 Round Bar Price Factors
- How to Buy EN9 Round Bar
- EN9 Round Bar Supplier in Mumbai
- Frequently Asked Questions
- Request a Quote
What Is EN9 Round Bar?
EN9 Round Bar is a medium-to-high-carbon unalloyed engineering steel commonly identified as 070M55. It is selected for components where strength, hardness and wear resistance are more important than maximum toughness or weldability.
The material contains approximately 0.50–0.60% carbon, which gives EN9 a higher hardening potential than lower-carbon engineering steels. Published grade references identify EN9 as 070M55, with C55 (1.0535) commonly cited as the closest continental designation. (Laxcon Steels)
EN9 is frequently used in shafts, gears, sprockets, cams, axles and other machinery components where resistance to mechanical wear is important.
For industrial purchasing, it is useful to specify both the commercial grade and the material designation, such as:
EN9 / 070M55
EN9 070M55 Steel Grade
EN9 is associated with the historical British steel designation 070M55 under the BS 970 system.
The designation 070M55 is still widely used commercially even though the older BS 970 specifications themselves are no longer current standards. This is why an engineering drawing or purchase order should be checked carefully before selecting the applicable modern specification.
For procurement, a typical requirement may include:
Material: EN9
Designation: 070M55
Product: Round Bar
Diameter: Required size
Length: Required length
Condition: Normalized / hardened and tempered / as specified
Finish: Bright / turned / ground / as specified
Quantity: Required quantity
T.S.M. Steel’s technical datasheet identifies 070M55 as EN9 and describes it as a medium-carbon engineering steel with approximately 0.55% carbon. (TSM Steel)
EN9 Chemical Composition
The chemistry of EN9 is important because its carbon content influences hardness, strength and heat-treatment response.
Commonly published composition limits for EN9 / 070M55 are:
| Element | Composition |
|---|---|
| Carbon (C) | 0.50–0.60% |
| Silicon (Si) | 0.05–0.35% |
| Manganese (Mn) | 0.50–0.80% |
| Sulphur (S) | 0.06% max |
| Phosphorus (P) | 0.06% max |
| Iron (Fe) | Balance |
These values correspond to commonly referenced 070M55/EN9 specifications. (Laxcon Steels)
Another 070M55 technical datasheet gives a similar range, with carbon at 0.50–0.60%, manganese at 0.50–0.90% and silicon at 0.10–0.40%, illustrating why the exact applicable specification should be confirmed for a particular purchase. (TSM Steel)
For production orders, the supplied Mill Test Certificate should be used to verify the actual heat chemistry.
EN9 Round Bar Mechanical Properties
There is no single mechanical-property value that applies to every EN9 Round Bar.
The final properties depend on:
- Bar diameter
- Delivery condition
- Normalizing
- Hardening
- Tempering
- Surface-hardening treatment
Published 070M55 data shows that normalized EN9 can have tensile strength in the region of 700–850 MPa, with the actual specified properties depending on section size and condition. (TSM Steel)
Another published reference for BS 970-1:1983 lists minimum normalized tensile strength of approximately 700 MPa for sections up to 63 mm and approximately 600 MPa for larger sections up to 250 mm, demonstrating the effect of section size on specified properties. (H2ABC)
For this reason, buyers should avoid specifying EN9 only by a generic tensile-strength figure.
A more useful purchase specification includes the grade, diameter and required heat-treatment condition.
Why EN9 Is Used for Wear-Resistant Components
The relatively high carbon content of EN9 gives it a useful response to hardening and surface-hardening processes.
Compared with lower-carbon engineering steels, EN9 can provide higher attainable hardness and wear resistance.
This makes it relevant where components experience:
- Repeated mechanical contact
- Sliding or rolling contact
- Surface wear
- Moderate-to-high loading
- Repeated rotation
- Impact that is not excessive
The trade-off is that increasing carbon content can reduce ductility, toughness and weldability compared with lower-carbon steels. (Laxcon Steels)
This is why EN9 should be selected according to the actual service conditions rather than simply choosing the highest-carbon material available.
EN9 Round Bar Applications
Shafts
EN9 Round Bar is commonly used for shafts where strength and wear resistance are important.
Round bar is particularly suitable for machining cylindrical components with controlled dimensions.
Gears
EN9 can be used for selected gears and gear-related components where suitable hardness and wear resistance are required.
Sprockets
The material is frequently associated with sprockets and other mechanical components exposed to repeated contact.
Cams
EN9 is used in selected cams where surface hardness and resistance to repeated mechanical contact are important.
Axles
Medium-carbon engineering steel such as EN9 can be used for selected axles and mechanical components.
Crankshafts and Machine Components
Published EN9 references list crankshafts, connecting rods, machine tools and automotive components among applications for the grade. (Steelmet Industries)
General Engineering
Industrial machinery manufacturers can use EN9 for components requiring a combination of machinability, strength and wear resistance.
EN9 Heat Treatment
Heat treatment is one of the most important considerations when specifying EN9.
Normalizing
Normalizing is commonly used to produce a more uniform microstructure and suitable balance of strength and toughness.
Published 070M55 data gives normalized mechanical-property requirements that vary with section size. (H2ABC)
Hardening
EN9 can be hardened by appropriate heating followed by quenching.
This increases hardness and strength but can also increase the risk of distortion or cracking, particularly with inappropriate process control.
Tempering
Tempering after hardening is used to obtain the required balance of hardness, strength and toughness.
Induction and Flame Hardening
EN9 is also suitable for selected surface-hardening processes.
This can be useful when a component requires a hard wear-resistant surface while maintaining a more suitable core condition.
The heat-treatment process should be selected according to the component’s dimensions, required hardness, service loads and manufacturing procedure.
EN9 Machining and Weldability
EN9 is generally machinable in suitable delivery conditions, particularly when supplied in a normalized or otherwise appropriate condition.
Typical operations include:
- Turning
- Milling
- Drilling
- Boring
- Threading
- Grinding
As hardness increases after heat treatment, machining becomes more demanding and the tooling and cutting parameters should be adjusted accordingly.
Welding EN9
Welding requires greater care than welding low-carbon steel because of EN9’s relatively high carbon content.
The higher carbon level can increase hardening in the heat-affected zone and therefore increase the risk of cracking if the welding procedure is not properly controlled.
For welded components, appropriate preheating, controlled heat input and post-weld treatment where required should be established by the responsible welding engineer.
EN9 is therefore generally a better choice for machined or forged components than for applications where extensive welding is expected.
EN9 Round Bar Sizes and Finishes
EN9 Round Bar can be sourced in different diameters and surface conditions depending on the application.
Common commercial forms include:
Black / Hot Rolled Round Bar
Suitable when machining allowance is acceptable.
Bright Round Bar
Useful where improved surface finish and dimensional accuracy are required.
Turned or Peeled Bar
Used when improved dimensional control is required before final machining.
Ground Round Bar
Suitable for precision requirements demanding tighter surface and dimensional control.
Cut-to-Length Bar
Useful for production requirements where standard bar lengths create unnecessary machining or material wastage.
When ordering, specify the required diameter, tolerance, length and surface finish.
Manan Steel & Metals’ published round-bar range includes multiple bar forms such as cold-drawn, hot-rolled, bright, forged, peeled, turned and centre-ground products. (Manan Steel & Metals)
EN9 Round Bar Price Factors
The EN9 Round Bar price depends on the complete specification and quantity.
Important pricing factors include:
Diameter
Larger diameters contain more steel and may involve different production requirements.
Length
Standard-length material and cut-to-length requirements can have different commercial costs.
Finish
Bright, peeled, turned and ground bars involve different processing stages.
Condition
Normalized, hardened and tempered or specially heat-treated material can have different processing costs.
Quantity
Bulk production requirements may receive a different commercial quotation from small quantities.
Testing and Documentation
MTC, dimensional inspection, hardness testing and other customer-specific requirements may affect the final price.
Steel Market Conditions
The underlying steel market and availability of the required size can influence the quotation.
For an accurate EN9 Round Bar price in Mumbai, buyers should provide the complete technical requirement instead of requesting only a per-kg price.
How to Buy EN9 Round Bar
A well-prepared purchase enquiry should include:
Material: EN9 / 070M55
Product: Round Bar
Diameter: ___ mm
Length: ___ mm
Condition: Normalized / Hardened & Tempered / As required
Finish: Black / Bright / Ground / Turned
Quantity: ___ kg / pieces
Testing: MTC / Hardness / Mechanical Test / Other
Application: Shaft / Gear / Sprocket / Cam / Other
If the requirement comes from an OEM drawing, include the exact material designation and heat-treatment condition shown on the drawing.
This is particularly important for EN9 because mechanical properties are strongly dependent on the supplied condition.
EN9 Round Bar Supplier in Mumbai
For companies searching for an EN9 Round Bar Supplier Mumbai, Manan Steel & Metals supplies round bars and engineering materials for industrial requirements.
Manan’s published round-bar range includes engineering materials in different sizes, grades and supply forms, including bright, cold-drawn, hot-rolled, forged and other bar conditions. (Manan Steel & Metals)
For an EN9 requirement, send the complete specification rather than only writing “EN9.”
A useful enquiry format is:
EN9 / 070M55
Diameter: ___ mm
Length: ___ mm
Condition: ___
Finish: ___
Quantity: ___
Testing: ___
Application: ___
This allows the requirement to be evaluated according to the actual engineering use.
Frequently Asked Questions
What is EN9 Round Bar?
EN9 Round Bar is a medium-to-high-carbon engineering steel commonly identified as 070M55. It is used for shafts, gears, sprockets, cams, axles and other components requiring strength and wear resistance.
What is the carbon content of EN9?
EN9 / 070M55 is commonly specified with approximately 0.50–0.60% carbon. (Laxcon Steels)
What is the equivalent of EN9 steel?
EN9 is commonly associated with 070M55. C55 / material number 1.0535 is also commonly cited as a close continental designation. Exact equivalency should be confirmed against the applicable project specification. (Laxcon Steels)
Is EN9 suitable for shafts and gears?
Yes. EN9 is commonly used for engineering components such as shafts, gears, sprockets and cams where strength and wear resistance are important.
Can EN9 Round Bar be heat treated?
Yes. EN9 can be normalized, hardened and tempered, and can also be considered for selected induction or flame-hardening applications.
Is EN9 easy to weld?
EN9 has higher carbon content than low-carbon steels, so welding requires more control and an appropriate welding procedure. For heavily welded structures, another grade may be more suitable depending on the application.
What affects EN9 Round Bar price?
Diameter, length, surface finish, delivery condition, heat treatment, quantity, testing and prevailing steel-market conditions all influence the final quotation.
How can I buy EN9 Round Bar in Mumbai?
Send the required EN9/070M55 grade, diameter, length, condition, finish, quantity and testing requirements to Manan Steel & Metals for a quotation.
Request a Quote for EN9 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: EN9 / 070M55
Diameter: ___ mm
Length: ___ mm
Condition: ___
Finish: ___
Quantity: ___ kg / pieces
Testing: ___
Application: ___
For industrial procurement, specifying the complete requirement helps ensure that the correct EN9 material and delivery condition are quoted.