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GCr15 Alloy Steel Round Bar with Polished Surface High Hardenability and OD 6-630mm for Bearing Applications
Product Details
| Model Number | GCr15 | Material Type | Alloy Steel |
|---|---|---|---|
| Diameter Range | 6-630mm | Round Bar Diameter | 16-280mm |
| Round Bar Length | 4000-10000mm | Flat Steel Thickness | 8-200mm |
| Flat Steel Length | 3000-4000mm | Carbon Content | 0.95-1.05% |
| Silicon Content | 0.15-0.35% | Manganese Content | 0.2-0.4% |
| Chromium Content | 1.3-1.65% | Quenching Temperature | 830-850°C |
| Quenching Hardness | 62-65 HRC | Tempering Temperature | 150-190°C |
| Tempering Hardness | 58-62 HRC | ||
| Highlight | Polished Surface Alloy Steel Round Bar,High Hardenability Bearing Steel Round Bar,OD 6-630mm GCr15 Steel Round Bar |
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Product Description
GCr15 / SAE52100 / EN31 Alloy Steel Round Bar for Bearing
Product Overview
GCr15 is a high carbon chromium bearing steel with optimized alloy content. After quenching and low temperature tempering, it delivers high hardness, uniform microstructure, excellent wear resistance, and superior contact fatigue performance.
Key Features
- Widely used high carbon chromium bearing steel with excellent performance and minimal alloy content
- High hardenability and comprehensive mechanical properties
- Excellent machinability after spheroidizing annealing
- High hardness, uniform structure, superior wear resistance, and high contact fatigue performance after heat treatment
- Outstanding hot working performance
International Standards Comparison
| Chinese | American | German | Japanese |
|---|---|---|---|
| GB GCr15 | AISI SAE52100 | DIN 100Cr6/EN31 | JIS SUJ2 |
Chemical Composition (%)
| Grades | C | Si | Mn | P | S | Cr | Mo | Cu | Ni |
|---|---|---|---|---|---|---|---|---|---|
| GCr15/52100 | 0.95-1.05 | 0.15-0.35 | 0.2-0.4 | ≤0.027 | ≤0.02 | 1.3-1.65 | ≤0.1 | ≤0.25 | ≤0.3 |
| 100Cr6 | 0.95-1.05 | 0.15-0.35 | 0.25-0.45 | ≤0.025 | ≤0.025 | 1.4-1.65 | ≤0.08 | ≤0.25 | ≤0.3 |
Heat Treatment Parameters
| Quenching | Tempering | ||||
|---|---|---|---|---|---|
| Heating Temperature/ºC | Cooling | Hardness/HRC | Heating Temperature/ºC | Cooling | Hardness/HRC |
| 830-850 | Oil | 62-65 | 150-190 | Air | 58-62 |
Typical Applications
- Manufacturing bearing rings and rolling elements for internal combustion engines, electric motors, automotive systems, tractors, machine tools, rolling mills, boring machines, mining equipment, and general machinery
- High-load, high-speed rotating mechanical transmission bearings
- Tool manufacturing including punching dies and precision measuring instruments
Available Stock Sizes
Round Bar
Diameter: 16-280mm
Length: 4000-10000mm
Flat Steel
Thickness: 8-200mm
Length: 3000-4000mm
Quality Assurance & Service
Premium Material Sourcing
We source materials exclusively from government-certified steel mills to ensure consistent quality and reliability in all our bearing steel products.
Reliable Delivery
We prioritize timely delivery for all orders, whether raw materials or finished products with machining or heat treatment, ensuring shortest possible lead times.
Quality Commitment
Our ISO 9001 certified quality management system undergoes regular audits and continuous improvement to meet customer demands and quality standards.
Comprehensive Services
- Quality specialty steel for all industrial applications
- Orders of any size or length with fast shipping
- Unique inventory of specialty steel products
- Value-added services: metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment
- Sawing services for small or large quantities, including sawing-to-size
- Excellent customer service and technical support
Contact us for the latest pricing and detailed specifications NOW!
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