English
Spanish
French
German
Italian
Chinese (Simplified)
Japanese
Korean
Arabic
Portuguese
Call Us : 08045800544
Call Us : 08045800544
Get a Quote
Alloy Steel 27MnCrB5 Round Bar 27MnCrB5 Bars 27MnCrB5 Rods
199.0 INR/Kilograms
Product Details:
- Material Alloy Steel 27MnCrB5
- Type Round Bar, Rod, Bar
- Tolerance H8, H9, H10 or as specified
- Diameter 10 mm to 350 mm
- Technique Hot Rolled, Annealed
- Standard EN 10083-3, ISO, ASTM, DIN
- Finish Black, Bright, Peeled, Polished
- Click to view more
X
Alloy Steel 27MnCrB5 Round Bar 27MnCrB5 Bars 27MnCrB5 Rods Price And Quantity
- 199.0 INR/Kilograms
- 1 Kilograms
Alloy Steel 27MnCrB5 Round Bar 27MnCrB5 Bars 27MnCrB5 Rods Product Specifications
- 10 mm to 350 mm
- Hot Rolled, Annealed
- EN 10083-3, ISO, ASTM, DIN
- Black, Bright, Peeled, Polished
- H8, H9, H10 or as specified
- Round Bar, Rod, Bar
- Alloy Steel 27MnCrB5
- Heat Treatment, Cutting, Grinding
- 27MnCrB5
- Engineering, Construction, Automotive, Machinery, Forging Parts
- Wear Resistant Parts, Agricultural Machinery
- 2 to 6 meters or customized
- 8-15% (as per standard)
- Free from scale and cracks
- 1200-1500 MPa (after heat treatment)
- As rolled, as forged, quenched and tempered
- Moderate, preheating recommended
- 200-250 HBW (as supplied), can be heat treated to higher values
- Rounded, as rolled or as processed
- Bundles, Loose, Wooden Box, or Customized
- 7.85 g/cm3
- Min. 950 MPa (after quenching and tempering)
- Good (in normalized condition)
- High, suitable for dynamic loading
Product Description
27MnCrB5 (specifically 27MnCrB5-2, Werkstoffnummer 1.7182) is a European standard (EN ISO 683-2 / EN 10083-3) boron-alloyed, heat-treatable low alloy engineering steel. It is highly valued for its exceptional wear resistance, hardenability, and mechanical strength, making it an excellent material for heavy-duty round bars, rods, and structural components exposed to high stress and abrasive wear.
Technical Specifications & Chemical Composition
The defining characteristic of 27MnCrB5 is the precise addition of Boron (B). Even in minute quantities, boron significantly boosts the steels hardenability during quenching without compromising cold formability or machinability in the annealed state. Manganese (Mn) and Chromium (Cr) further enhance depth-hardening and tensile strength.
Chemical Composition (Weight %)
| Element | Carbon (C) | Silicon (Si) | Manganese (Mn) | Phosphorus (P) | Sulfur (S) | Chromium (Cr) | Boron (B) |
| Min | 0.24% | 1.10% | 0.30% | 0.0008% | |||
| Max | 0.30% | 0.40% | 1.40% | 0.025% | 0.035% | 0.60% | 0.0050% |
Note: Titanium (Ti) is typically added in small amounts (0.02-0.06%) to fix nitrogen and ensure the boron remains effective.
Mechanical Properties (Quenched & Tempered Condition)
When supplied or heat-treated to the +QT (Quenched and Tempered) condition, 27MnCrB5 exhibits excellent core strength and uniform hardness across varying bar cross-sections.
Typical Properties by Round Bar Diameter ($d$)
| Dimension (d) | Yield Strength (Rp0.2) | Tensile Strength (Rm) | Elongation (A5) | Impact Energy (ISO-V) |
| 16 mm | 700 MPa | 900 - 1100 MPa | 12% | 41 J |
| 16mm <40 mm | 650 MPa | 850-1000 MPa | 13% | 48 J |
| 40mm < 100 mm | 600 MPa | 800 - 950 MPa | 14% | 48 J |
-
Core Hardness: Achieves a highly resilient core hardness of ~38 HRC (after 80% martensite transformation).
-
Density: 7.85 text{g/cm}^3
-
Modulus of Elasticity: 210 GPa
Heat Treatment Guidelines
-
Forging / Hot Rolling: 1200- 850
-
Normalizing: 860- 890
-
Soft Annealing (+A): 650- 700 (yields a hardness typically $le$ 250 HBW for optimal machinability)
-
Hardening: 840-880
-
Quenching Medium: Water (recommended for diameters up to 52 mm) or Oil (recommended for diameters up to 43 mm to minimize distortion).
Key Applications of 27MnCrB5 Round Bars & Rods
Because it combines high tensile strength with superb wear performance at a more cost-effective price point than highly alloyed Ni-Cr-Mo steels, 27MnCrB5 round bars are prominently used in:
-
Heavy-Duty Fasteners: High-tensile bolts, clamping hardware, and structural studs.
-
Agricultural Engineering: Plowshares, harrow discs, and rototiller shafts that undergo continuous abrasion.
-
Automotive & Suspension Systems: Axles, crankshafts, steering links, shift forks, and torsion bars.
-
Mechanical Components: Drive shafts, sprocket gears, heavy-duty chain wheels, and wear-strips for yellow-goods (dredger buckets, earthmovers).
Supply & Processing Forms
-
Round Bars / Rods: Available in hot-rolled (+AR), cold-drawn, or turned finishes.
-
Machinability & Weldability: Excellent tool life in the soft-annealed state. Due to the medium carbon content and manganese levels, preheating is advisable if structural welding is required on hardened components to eliminate the risk of cold cracking.
Superior Mechanical Performance
The 27MnCrB5 alloy steel bars offer impressive mechanical strength, adaptability to heat treatment, and resistance to dynamic stress. This makes them particularly suitable for applications requiring high durability and reliability, such as machinery, automotive parts, and agricultural wear-resistant components.
Versatile Processing Options
These alloy steel products are available in various surface conditions, finishes (black, bright, peeled, polished), and can be tailored through processes like cutting, grinding, or heat treatment. Packing and delivery are customizable, ensuring safe and convenient handling for both local and international clients.
FAQ's of Alloy Steel 27MnCrB5 Round Bar 27MnCrB5 Bars 27MnCrB5 Rods:
Q: How can Alloy Steel 27MnCrB5 round bars be used in engineering and construction?
A: These alloy steel bars are regularly utilized in engineering, construction, and automotive industries for their superior strength, high wear resistance, and impact durability. Their ability to withstand dynamic loading and provide reliable performance in forging parts and structural elements makes them highly suitable for demanding mechanical applications.Q: What heat treatment processes are applicable to 27MnCrB5 bars to enhance their properties?
A: 27MnCrB5 bars can undergo quenching and tempering to achieve a minimum yield strength of 950 MPa and a tensile strength up to 1500 MPa. These processes increase both hardness and toughness, optimizing the bars for high-impact and wear-resistant applications such as agricultural machinery components.Q: When is it necessary to preheat 27MnCrB5 bars for welding?
A: Preheating is recommended when welding 27MnCrB5 bars due to their moderate weldability. Preheating helps to relieve thermal stress, minimize cracking, and ensure a sound weld, especially in thicker sections or when subsequent heat treatment is required.Q: Where can clients source 27MnCrB5 round bars, rods, and bars?
A: Clients can purchase these products worldwide from suppliers, manufacturers, exporters, and distributors based in Hungary and other major manufacturing hubs. Various delivery and packing options, including bundles, loose, or wooden boxes, are available to suit specific requirements.Q: What quality standards do 27MnCrB5 alloy steel bars comply with?
A: 27MnCrB5 alloy steel bars conform to respected industry standards such as EN 10083-3, ISO, ASTM, and DIN. These certifications guarantee consistent quality, mechanical properties, and material traceability for various international and domestic applications.Q: How does the surface condition of 27MnCrB5 bars benefit end-users?
A: The surface condition of the bars-free from scale and cracks-ensures enhanced performance, longevity, and safety in critical applications. Rounded edges and a choice of finishes (black, bright, peeled, polished) also contribute to efficient processing and meeting specific project requirements.Tell us about your requirement
Price:
Quantity
Select Unit
- 50
- 100
- 200
- 250
- 500
- 1000+
Additional detail
Mobile number
Email
Other Products in 'Steel Bar' category
JAYANT IMPEX
GST : 27AAQFJ5764L1ZJ
GST : 27AAQFJ5764L1ZJ
- 6th, 605, Majestic Shopping Center, Jagannath Shankarseth Road, Girgaon,Mumbai - 400004, Maharashtra, India
- Phone : 08045800544
- Mr Shrenik Prakash Mehta (Director)
- Mobile : 08045800544
-
jayantimpex12@gmail.com
-
Share to
Send Inquiry
Send SMS
Call Me Free
JAYANT IMPEX PVT. LTD. All Rights Reserved.(Terms of Use)
Developed and Managed by Infocom Network Private Limited. Terms of use | Returns Policy Member
Developed and Managed by Infocom Network Private Limited. Terms of use | Returns Policy Member
