High Carbon Chromium Bearing Steel
SUJ2 and GCr15 for bearings, steel balls, rollers, bushings and wear-resistant industrial applications
Hara Metal supplies high carbon chromium bearing steel bars for industrial applications requiring high wear resistance, high contact fatigue strength and stable dimensional performance. This category is suitable for bearing components, transmission parts and industrial uses where durability and hardness are critical.
and other grades
Product Details
Characteristics:
High Carbon Chromium Bearing Steel features a micro organization that, after heat treatment, is comparatively even and stable. It offers good abrasion resistance, high stress fatigue strength, excellent size stability, and strong anti-abrasion properties. This type of bearing steel can satisfy the requirements of working under general operating conditions.
Application:
Now high carbon chromium bearing steel SUJ2 and GCr15 with high hardenability have been developed its performance are superior than GCr15 and can be used as a substitute on the railway bearing, roll mill bearing and mine machinery bearing.
Features:
Good overall performance. After quenching and tempering, the hardness is high and uniform, and the wear resistance and contact fatigue strength are high. It has good hot workability and good processability after spheroidizing annealing.
Application:
Used in general plastic molds, automobiles, machine tool bearings, steel balls, rollers, bushings, etc.
Product specifications
| Specification range | Tensile strength Rm | Hardness |
| ≥Φ1 | 650~700 | HRB≤66 |
| Tolerance | The outer diameter tolerance can reach ≤0.04mm |
| Surface roughness | The drawing rod can reach ≤Ra0.6, the grinding rod can reach ≤Ra0.3, and there are no trachoma, threads or scratches on the surface. |
| Straightness | Bar length ≤3m, straightness up to 400mm≤0.04mm |
Characteristics:
GCr15 has good comprehensive properties, high and uniform hardness after quenching and tempering, high wear resistance and contact fatigue resistance, good hot working performance, and good processability after spheroidizing annealing.
Application:
Mainly used for manufacturing steel balls on transmission shafts of internal combustion engines, electric locomotives, machine tools, tractors, etc.
Product specifications
| Specification range | Tensile strength Rm | Hardness |
| ≥Φ1 | 650~700 | HRB≤66 |
| Tolerance | The outer diameter tolerance can reach ≤0.04mm |
| Surface roughness | The drawing rod can reach ≤Ra0.6, the grinding rod can reach ≤Ra0.3, and there are no trachoma, threads or scratches on the surface. |
| Straightness | Bar length ≤3m, straightness up to 400mm≤0.04mm |
| High Carbon Chromium Bearing Steel | ||||||||||
| Material | Chemical composition (mass fraction) % | |||||||||
| C | Si | Mn | P | S | Ni | Cr | Mo | Cu | Pb | |
| SUJ2 | 0.95~1.10 | 0.15~0.35 | 0≦0.5 | 0≦0.025 | 0≦0.025 | 0≦0.25 | 1.30-1.60 | 0≦0.08 | 0≦0.25 | – |
| GCr15 | 0.95~1.05 | 0.15~0.35 | 0.25~0.45 | ≤0.025 | ≤0.020 | ≤0.25 | 1.40-1.65 | ≤0.10 | ≦0.25 | – |
What Is High Carbon Chromium Bearing Steel?
High carbon chromium bearing steel is used for industrial parts that require high hardness, strong wear resistance, high contact fatigue strength and stable performance after heat treatment. It is suitable for bearings and other components that operate under demanding working conditions and require reliable durability in continuous use.
Available High Carbon Chromium Bearing Steel Grades
Hara Metal supplies key high carbon chromium bearing steel grades including SUJ2 and GCr15, with additional grades available on request. These grades are commonly selected for applications requiring wear resistance, size stability, fatigue performance and dependable service life in industrial use.
Why Choose High Carbon Chromium Bearing Steel from Hara Metal?
- High wear resistance for demanding industrial applications
- High contact fatigue strength for bearing-related use
- Good dimensional stability after heat treatment
- High and uniform hardness after quenching and tempering
- Tight dimensional tolerance up to ≤0.04 mm
- Surface roughness up to Ra0.6 for drawn bars and Ra0.3 for ground bars
- Straightness control for precision applications
Grade | Best For | Key Strength | Notes |
SUJ2 | Bearings, steel balls, rollers, bushings, plastic molds | High hardness, wear resistance and contact fatigue strength | Suitable for general bearing and wear-resistant applications |
GCr15 | Transmission shafts, bearings, machine tools, tractors | Good comprehensive properties and wear resistance | Suitable for bearing and transmission-related industrial parts |
Typical Applications
High carbon chromium bearing steel is widely used in industrial applications such as railway bearings, roll mill bearings, mine machinery bearings, steel balls, rollers, bushings, machine tool bearings, automobile parts and transmission-related components. It is suitable for parts that require wear resistance, hardness and stable performance under load.
How to Choose the Right High Carbon Chromium Bearing Steel Grade
Choose your grade based on the required hardness, wear resistance, fatigue performance and actual application. For general bearing parts, steel balls, rollers and bushings, SUJ2 is a strong starting point. For transmission-related applications and bearing components used in industrial machinery, GCr15 may be more suitable. If you are unsure which grade matches your drawing or production requirement, contact Hara Metal for grade guidance and quotation support.
Request a Quote for High Carbon Chromium Bearing Steel
Looking for SUJ2 or GCr15 for your production line? Send your requirement to Hara Metal through our quotation request form and our team will help you confirm the suitable grade, product details and quotation.
FAQs
What is high carbon chromium bearing steel used for?
High carbon chromium bearing steel is used for bearings, steel balls, rollers, bushings and other industrial parts that require high wear resistance, contact fatigue strength and stable hardness.
What grades of high carbon chromium bearing steel does Hara Metal supply?
Hara Metal supplies SUJ2 and GCr15, with additional grades available on request.
What tolerance can Hara Metal provide for high carbon chromium bearing steel bars?
Outer diameter tolerance can reach ≤0.04 mm, depending on the product specification.
Can Hara Metal supply drawn and ground bars?
Yes. Drawn bar surface roughness can reach Ra0.6, while ground bar surface roughness can reach Ra0.3.
How can I request a quote for high carbon chromium bearing steel?
You can submit your inquiry through Hara Metal’s quotation form or contact the sales team directly for grade guidance and pricing support.