English
Spanish
French
German
Italian
Chinese (Simplified)
Japanese
Korean
Arabic
Portuguese
Call Us : 08045800544
Call Us : 08045800544
Get a Quote
30CrNiMo8 Alloy Steel Rods/ 30CrNiMo8 Flat Bars / 30CrNiMo8 Round Bar/Rings
288.0 INR/Kilograms
Product Details:
- Specific Use Heavy-duty mechanical parts, high-stress components, power transmission, axle parts
- Finish Bright, Black, Peeled, Polished, Rough Turned
- Processing Annealed, Hardened & Tempered, Normalized
- Technique Hot Rolled / Cold Drawn / Forged
- Diameter 16 mm to 300 mm
- Grade 30CrNiMo8
- Type Round Bar, Flat Bar, Rod, Rings
- Click to view more
X
30CrNiMo8 Alloy Steel Rods/ 30CrNiMo8 Flat Bars / 30CrNiMo8 Round Bar/Rings Price And Quantity
- 100 Kilograms
- 288.0 INR/Kilograms
30CrNiMo8 Alloy Steel Rods/ 30CrNiMo8 Flat Bars / 30CrNiMo8 Round Bar/Rings Product Specifications
- Engineering, Construction, Automotive, Machinery Parts, Gears, Shafts
- 100 mm to 6000 mm (custom lengths available)
- 16 mm to 300 mm
- Hot Rolled / Cold Drawn / Forged
- H9, H11, H13 or as required
- Annealed, Hardened & Tempered, Normalized
- EN 10083-3, DIN 1.6580, AISI 4340 (approx)
- 30CrNiMo8 Alloy Steel
- Bright, Black, Peeled, Polished, Rough Turned
- Heavy-duty mechanical parts, high-stress components, power transmission, axle parts
- Round Bar, Flat Bar, Rod, Rings
- 30CrNiMo8
- 1000-1200 MPa
- 250-320 HB (in tempered condition)
- As rolled, as forged, pre-machined, or as per customer requirement
- Quenched and tempered, Normalized, Annealed
- 35 J (at -20C)
- As per EN 10228 or customer specification
- 850 MPa (in quenched and tempered condition)
- 12-15% (in 5d)
- C: 0.26-0.34%, Si: 0.40 max, Mn: 0.50-0.80%, Cr: 1.80-2.20%, Ni: 1.80-2.20%, Mo: 0.30-0.50%
- Free from scale, cracks, and surface defects
Product Description
30CrNiMo8 (Material Number 1.6580) is a high-performance, heat-treatable alloy steel known for its exceptional toughness and high tensile strength. It is often considered the "big brother" to 4340 or EN24, offering even better hardenability and fatigue resistance, particularly in large cross-sections.
1. Technical Profile
This grade belongs to the Chromium-Nickel-Molybdenum family. The high Nickel ($Ni$) and Molybdenum ($Mo$) content ensures that the material achieves uniform mechanical properties even when through-hardened in large diameters.
-
Key Strength: Excellent resistance to "temper brittleness."
-
Performance: Maintains high impact strength at low temperatures.
-
Standards: Commonly specified under EN 10083-3 and DIN 17200.
2. Chemical Composition (Typical)
The chemical "recipe" for 30CrNiMo8 is designed for maximum depth of hardening:
| Element | Percentage (%) |
| Carbon (C) | 0.26 0.34 |
| Chromium (Cr) | 1.80 2.20 |
| Nickel (Ni) | 1.80 2.20 |
| Molybdenum (Mo) | 0.30 0.50 |
| Manganese (Mn) | 0.50 0.80 |
| Silicon (Si) | max 0.40 |
3. Mechanical Properties (Quenched & Tempered)
When supplied in the QT (Quenched and Tempered) condition, 30CrNiMo8 reaches impressive benchmarks:
-
Tensile Strength ($R_m$): $1100 1300 text{ MPa}$
-
Yield Strength ($R_{e}$): $900 text{ MPa}$ (Minimum)
-
Elongation ($A$): $10% 12%$
-
Impact Energy ($KV$): $30 45 text{ J}$ (at room temp)
4. Available Forms & Applications
Because of its reliability under extreme torque and stress, it is available in several heavy-duty formats:
-
Round Bars & Rods: Used for heavy-duty drive shafts, axle spindles, and high-load bolts.
-
Flat Bars: Often used for specialized structural plates and high-stress machinery frames.
-
Rings (Forged): Critical for large-diameter gears, wind turbine components, and aircraft engine parts.
Common Industries:
-
Aerospace: Landing gear and actuator components.
-
Power Gen: Turbine shafts and heavy-duty connectors.
-
Automotive: High-performance crankshafts and steering knuckles.
5. Heat Treatment Guidance
To get the most out of 30CrNiMo8, precise thermal processing is required:
-
Forging: $1050circtext{C}$ to $1150circtext{C}$ (Slow cooling in sand or ash is recommended).
-
Annealing: $650circtext{C}$ to $700circtext{C}$ (Soft annealing for machinability).
-
Hardening: $830circtext{C}$ to $860circtext{C}$ followed by an oil quench.
-
Tempering: $540circtext{C}$ to $660circtext{C}$ depending on the final strength required.
Comparison: 30CrNiMo8 vs. 34CrNiMo6 (EN24)
| Property | 34CrNiMo6 | 30CrNiMo8 |
| Hardenability | High | Very High (Better for larger sections) |
| Toughness | Excellent | Superior |
| Typical Use | General Gear/Shafts |
Engineered to Withstand Extreme Loads
30CrNiMo8 Alloy Steel Bars are designed for high-stress applications, guaranteeing reliability in critical environments. Their superior combination of high strength, impact resistance, and excellent elongation makes them suitable for demanding sectors such as power transmission, heavy-duty mechanics, and automotive engineering.
Customizable to Your Project Needs
Available in custom lengths (100 mm to 6000 mm), diameters (16 mm to 300 mm), and multiple finishing options-these bars can be tailored to precise requirements. Choose from hot rolled, forged, or cold drawn techniques, and select hardness, tolerance, and surface finishes to match your application specifications.
FAQ's of 30CrNiMo8 Alloy Steel Rods/ 30CrNiMo8 Flat Bars / 30CrNiMo8 Round Bar/Rings:
Q: How are 30CrNiMo8 alloy steel rods and bars processed to achieve their mechanical properties?
A: 30CrNiMo8 alloy steel rods and bars undergo heat treatment processes such as quenching and tempering, normalization, or annealing. These treatments enhance their mechanical properties-resulting in hardness between 250-320 HB, yield strength of 850 MPa, and tensile strength of 1000-1200 MPa. The final condition may be as-rolled, as-forged, pre-machined, or as per the customer's specification.Q: What applications are ideal for 30CrNiMo8 alloy steel products?
A: These alloy steel products are commonly utilized in engineering, construction, automotive components, gears, shafts, machinery parts, heavy-duty mechanical items, and high-stress power transmission parts. Their superior strength and toughness make them reliable choices for demanding industrial environments.Q: When should ultrasonic testing be performed on 30CrNiMo8 steel bars?
A: Ultrasonic testing should be conducted as part of the quality assurance process, either according to EN 10228 standards or as specified by the customer. It verifies internal soundness, ensuring bars are free from cracks and internal defects before they are dispatched for use in critical applications.Q: Where are 30CrNiMo8 alloy steel bars manufactured and supplied?
A: These products are manufactured, exported, and supplied widely in India by recognized dealers, fabricators, manufacturers, retailers, and traders. They are available for both domestic and international markets, customized to client requirements.Q: What are the available finishes and tolerances for 30CrNiMo8 bars and rods?
A: Finishes include bright, black, peeled, polished, and rough turned surfaces. Tolerance classes such as H9, H11, and H13 can be provided, or tailored per customer specifications. These options enable precise adaptation to a wide range of high-precision engineering needs.Q: How does the chemical composition of 30CrNiMo8 benefit its performance?
A: With controlled percentages of carbon (0.26-0.34%), chromium (1.80-2.20%), nickel (1.80-2.20%), and molybdenum (0.30-0.50%), this alloy delivers enhanced toughness, hardenability, and wear resistance. These properties extend the lifespan of components even under high mechanical loads and harsh operating conditions.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
