What is 15NiCr1Mo12 Case Hardening Steel Round Bar?
15NiCr1Mo12 Case Hardening Steel Round Bar is a low-carbon alloy steel containing nickel, chromium, and molybdenum, specifically developed for carburizing and case hardening applications. The alloy composition improves the steel’s toughness, strength, and hardenability. After carburizing and heat treatment, the steel forms a hardened outer layer while maintaining a tough core capable of withstanding heavy mechanical stresses.
Due to its excellent fatigue strength and shock resistance, 15NiCr1Mo12 steel is widely used in automotive and heavy engineering components. The round bar form provides easy machinability and uniform stress distribution, making it suitable for rotating and load-bearing parts. 15NiCr1Mo12 Case Hardening Steel Round Bar is available in both bright and black finish conditions depending on application requirements.
The product range generally varies from 10 mm to 400 mm in diameter and 3 meters to 6 meters in length as standard. Customized sizes and cut lengths can also be supplied according to specific industrial requirements.
Chemical Composition of 15NiCr1Mo12 Case Hardening Steel Round Bar
The chemical composition of 15NiCr1Mo12 Case Hardening Steel Round Bar provides excellent hardenability, strength, and wear resistance.
| Element | Content (%) |
|---|---|
| C | 0.12 – 0.18 |
| Si | 0.10 – 0.40 |
| Mn | 0.40 – 0.70 |
| Cr | 0.75 – 1.25 |
| Ni | 1.00 – 1.40 |
| Mo | 0.08 – 0.15 |
| P | 0.035 Max |
| S | 0.035 Max |
The presence of nickel enhances toughness and impact strength, while chromium and molybdenum improve hardenability and wear resistance, making this steel suitable for high-performance case hardened components.
Equivalent Grades of 15NiCr1Mo12 Case Hardening Steel Round Bar
15NiCr1Mo12 steel is recognized internationally and has comparable grades used in different standards:
| Standard | Equivalent Grade |
|---|---|
| DIN | 1.5752 |
| AISI / SAE | Similar Case Hardening Alloy Steel |
| BS | Nickel Chromium Molybdenum Case Hardening Steel |
| EN | 15NiCr1Mo12 |
These equivalent grades allow manufacturers to source comparable materials globally while maintaining similar chemical and mechanical properties.
Applications of 15NiCr1Mo12 Case Hardening Steel Round Bar
The 15NiCr1Mo12 Case Hardening Steel Round Bar is widely used in engineering industries due to its excellent wear resistance and strong core strength after carburizing and heat treatment.
Typical applications include:
- Heavy-duty gears and pinions
- Automotive transmission shafts
- Camshafts and crankshafts
- High-strength fasteners and bolts
- Industrial machinery components
- Precision mechanical parts requiring wear resistance
The round bar shape ensures uniform stress distribution and good machinability, making it suitable for rotating parts and high-load engineering applications.
Availability and Customization
The 15NiCr1Mo12 Case Hardening Steel Round Bars are available in diameters ranging from 10 mm to 400 mm. Standard lengths generally vary between 3 meters to 6 meters, although customized cut lengths and sizes can be supplied based on project requirements.
Customized supply options help reduce material wastage and improve machining efficiency during manufacturing operations.
Industry Applications
- Engineering Industry 15NiCr1Mo12 Case Hardening Steel Round Bars are widely used in engineering industries for manufacturing gears, shafts, and precision mechanical parts. After carburizing and heat treatment, the hardened outer layer improves wear resistance and durability, making it suitable for heavy-duty mechanical applications.
- Automobile Industry In the automobile sector, 15NiCr1Mo12 steel is used for transmission components, gear systems, and drive shafts. The hardened surface offers excellent resistance to friction and wear, while the tough internal core provides strength under continuous mechanical stress.
- Machinery Manufacturing Industry Machinery manufacturers use 15NiCr1Mo12 Case Hardening Steel Round Bars to produce couplings, shafts, gears, and other high-strength mechanical components. The steel provides excellent fatigue strength and durability, ensuring long service life in demanding industrial environments.
Key Features of 15NiCr1Mo12 Case Hardening Steel Round Bar
- Excellent hardenability for case hardening applications
- High strength and toughness due to alloy composition
- Superior wear resistance after carburizing
- Excellent fatigue resistance under cyclic loads
- Suitable for heavy-duty engineering components
Why Choose STEEL MART for 15NiCr1Mo12 Case Hardening Steel Round Bar?
STEEL MART is a reliable supplier of 15NiCr1Mo12 Case Hardening Steel Round Bar with more than four decades of experience in the steel industry. Our commitment to quality manufacturing and strict inspection procedures ensures that every product meets international industrial standards.
All materials supplied by STEEL MART undergo strict quality testing and are delivered with Material Test Certificates (MTC) to ensure reliability and compliance. We supply 15NiCr1Mo12 Case Hardening Steel Round Bars in a wide range of sizes and specifications suitable for engineering, automotive, and machinery industries. Because of our consistent product quality and dependable service, we receive regular repeat orders from customers.
Conclusion
15NiCr1Mo12 Case Hardening Steel Round Bar is a high-quality alloy steel widely used in applications that require a hard wear-resistant surface combined with a strong and tough internal core. Its excellent fatigue strength, durability, and wear resistance make it suitable for manufacturing gears, shafts, transmission components, and heavy-duty engineering parts.
15NiCr1Mo12 Case Hardening Steel Round Bar supplied by STEEL MART is manufactured according to strict industrial standards and is available in multiple diameters and lengths to meet diverse engineering requirements. Its superior mechanical properties make it a preferred material for engineering, automotive, and machinery manufacturing industries.
FAQs
(1)What is 15NiCr1Mo12 Case Hardening Steel Round Bar mainly used for?
It is mainly used for manufacturing gears, shafts, pinions, and other high-strength engineering components.
(2)Why is 15NiCr1Mo12 steel suitable for case hardening applications?
Its nickel-chromium-molybdenum alloy composition allows the steel to develop a hard outer surface while maintaining a tough internal core.
(3)Is 15NiCr1Mo12 Case Hardening Steel Round Bar suitable for heavy-duty applications?
Yes, it offers excellent fatigue strength and wear resistance, making it ideal for demanding engineering and industrial applications.
(4)What sizes are available for 15NiCr1Mo12 Case Hardening Steel Round Bars?
They are typically available in diameters from 10 mm to 400 mm and standard lengths from 3 m to 6 m.
(5)Do you provide test certificates with 15NiCr1Mo12 Case Hardening Steel Round Bar?
Yes, all 15NiCr1Mo12 Case Hardening Steel Round Bars are supplied with Material Test Certificates (MTC) to ensure quality and compliance.
