27MnCrB5-2 Alloy Bar 27MnCrB5-2 Round Bars 27MnCrB5-2 Rods

27MnCrB5-2 Alloy Bar 27MnCrB5-2 Round Bars 27MnCrB5-2 Rods

Name: 27MnCrB5-2 Alloy Bar 27MnCrB5-2 Round Bars 27MnCrB5-2 Rods
Brand: JAYANT IMPEX
Price: 256.0 INR
Availability: InStock

256.0 INR/Kilograms

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Product Details:

Specific Use High strength wear-resistant applications
Diameter 16 mm - 350 mm
Tolerance H9, H10, H11 or as required
Type Bar, Round Bar, Rod
Material 27MnCrB5-2 Alloy Steel
Technique Hot Rolled / Forged
Length 3000 mm - 6000 mm or customized
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27MnCrB5-2 Alloy Bar 27MnCrB5-2 Round Bars 27MnCrB5-2 Rods Price And Quantity

Price 256.0 INR/Kilograms
Minimum Order Quantity 1 Kilograms

27MnCrB5-2 Alloy Bar 27MnCrB5-2 Round Bars 27MnCrB5-2 Rods Product Specifications

Technique Hot Rolled / Forged
Material 27MnCrB5-2 Alloy Steel
Length 3000 mm - 6000 mm or customized
Standard EN 10083-3
Finish Black, Bright, Peeled, Polished
Application Automotive parts, agricultural machinery, heavy-duty components
Grade 27MnCrB5-2
Processing Quenched and Tempered, Annealed
Diameter 16 mm - 350 mm
Specific Use High strength wear-resistant applications
Tolerance H9, H10, H11 or as required
Type Bar, Round Bar, Rod

Hardness (after heat treatment) 220 - 320 HBW
Ultimate Tensile Strength 950 MPa (after heat treatment)
Yield Strength 700 MPa (after heat treatment)
Delivery Condition As rolled, Heat treated, Machined
Pack Type Bundles, Wooden Boxes, Custom Packaging
Alloy Content Manganese, Chromium, Boron
Surface Condition Mill finish, Smooth turned, Ground

Product Description

27MnCrB5-2 (Material Number: 1.7182) is a high-quality, boron-alloyed carbon-manganese steel widely used for components requiring high strength, wear resistance, and excellent response to heat treatment (specifically quenching and tempering).

Here is a comprehensive breakdown of the technical specifications, international equivalents, and typical applications for 27MnCrB5-2 alloy bars, round bars, and rods.

Chemical Composition (%)

The addition of Boron (B) is the defining feature of this grade, as it drastically improves hardenability without requiring large, expensive amounts of other alloying elements.

Element	Min (%)	Max (%)
Carbon (C)	0.24	0.30
Manganese (Mn)	1.10	1.40
Chromium (Cr)	0.30	0.60
Boron (B)	0.0008	0.0050
Silicon (Si)		0.40
Phosphorus (P)		0.025
Sulfur (S)		0.035

International Cross-Reference & Equivalents

Depending on your regional standards, 27MnCrB5-2 is comparable to the following designations:

EN / DIN Standard: 27MnCrB5-2 / 1.7182 (EN 10083-3)
SAE / AISI (USA): ~51B25 / ~51B30 (Approximate matches based on chemistry and boron content)
AFNOR (France): 27MDB5
UNI (Italy): 27MnCrB5-2

Mechanical Properties (Typical values after Q+T)

Because this material is designed for heat treatment, its mechanical properties depend heavily on the final tempering temperature and section thickness:

Tensile Strength ( $R_m$ ): $1000 - 1300 text{ MPa}$
Yield Strength ( $R_e$ ): $ge 750 - 850 text{ MPa}$
Elongation ( $A_5$ ): $ge 10 - 12%$
Impact Energy ( $KV$ ): $ge 30 - 35 text{ J}$ (at room temperature)

Typical Applications

Thanks to its excellent core toughness and high surface hardness after quenching, 27MnCrB5-2 round bars and rods are heavily favored in heavy machinery, automotive, and agricultural sectors.

Agricultural Engineering: Rotary tiller blades, plowshares, harrow discs, and wear liners.
Automotive & Machinery: Axles, high-strength bolts, connecting rods, crankshafts, and torsion bars.
Fasteners: Structural fasteners and heavy-duty clamping hardware requiring Grade 10.9 or 12.9 mechanical performance.

Supply Forms & Processing

Available Shapes: Hot-rolled, forged, cold-drawn, or turned round bars and wire rods.
Delivery Conditions: * As rolled (+AR)
- Soft annealed (+A)
- Quenched and Tempered (+QT)
Welding: Due to the carbon and manganese content, preheating is generally recommended if welding is necessary, followed by a stress-relief or tempering cycle to prevent cracking in the heat-affected zone.

Engineered for Strength and Durability

The 27MnCrB5-2 Alloy Bars, Round Bars, and Rods offer a remarkable combination of high tensile strength and wear resistance. The alloy's composition, featuring manganese, chromium, and boron, ensures the material withstands heavy-duty applications, providing long-lasting performance in challenging operating environments.

Versatile Finishes and Custom Sizes

Available in finishes such as black, bright, peeled, and polished, these bars come in lengths from 3000 to 6000 mm or as required, with diameters ranging between 16 mm and 350 mm. This range enables precise adaptation for various industrial requirements, accommodating customization for specific projects and processing needs.

Adhering to International Quality Standards

Manufactured according to EN 10083-3 standards and processed through hot rolling or forging, these steel bars can be delivered in as-rolled, heat-treated, or machined conditions. This adaptability ensures reliable quality and consistency for use by fabricators, manufacturers, and end-users across the globe.

FAQ's of 27MnCrB5-2 Alloy Bar 27MnCrB5-2 Round Bars 27MnCrB5-2 Rods:

Q: How are 27MnCrB5-2 Alloy Bars typically used in industry?

A: These alloy steel bars are used in the manufacturing of automotive parts, agricultural machinery, and heavy-duty components due to their high strength, wear resistance, and durability after heat treatment.

Q: What processing methods are available for these bars and rods?

A: 27MnCrB5-2 Bars can be processed by hot rolling, forging, quenching and tempering, or annealing. They can also be supplied in machined or as-rolled conditions according to customer requirements.

Q: What are the benefits of using 27MnCrB5-2 Alloy Bars for high strength applications?

A: After proper heat treatment, these bars reach a yield strength of 700 MPa and an ultimate tensile strength of 950 MPa, making them especially suitable for parts subject to heavy mechanical loads and wear.

Q: Where can these alloy bars be supplied in India?

A: As a dealer, exporter, manufacturer, fabricator, supplier, trader, and retailer based in India, we provide 27MnCrB5-2 Alloy Bars to clients across the country with flexible delivery and packaging options.

Q: When is heat treatment applied and what hardness can be achieved?

A: Heat treatment, such as quenching and tempering, is applied either during or after processing to enhance mechanical properties. Post-treatment, the bars typically achieve a hardness of 220 - 320 HBW.

Q: What surface finishes and tolerances are available for 27MnCrB5-2 Rods?

A: These rods are available with mill finish, smooth turned, ground, peeled, and polished surfaces, and can be manufactured with diametric tolerances of H9, H10, H11, or as specified by the customer.

Q: How are the bars and rods packaged for delivery?

A: Packaging options include standard bundles, wooden boxes, or custom packaging, ensuring safe transportation and handling according to customer preferences.

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