DIN 100Cr6 Bearing Steel, Material Number:1.3505
PRODUCT DESCRIPTION
DIN 100Cr6 (1.3505) is a high-carbon chromium steel, known for excellent wear resistance and high hardness, ideal for bearings, gears, and automotive components.PRODUCT TYPES
Overview of DIN 100Cr6, 1.3505 Bearing Steel
DIN 100Cr6, also known as 1.3505, is a high-carbon chromium alloy steel widely used in the production of rolling bearings, gears, and other high-performance components. This steel is known for its high hardness, wear resistance, and fatigue strength, making it an ideal material for bearings subjected to high loads and stress. Its ability to maintain its hardness and strength even under high temperatures is one of its key advantages.
The primary alloying element in 100Cr6 is chromium, which enhances its hardenability, corrosion resistance, and wear resistance. It can be hardened to very high levels, which is why it is commonly used in applications that require a high level of durability, such as in bearing manufacturing.
Chemical Composition (in %)
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.95 – 1.05 |
| Silicon (Si) | 0.15 – 0.35 |
| Manganese (Mn) | 0.40 – 0.70 |
| Phosphorus (P) | 0.025 max |
| Sulfur (S) | 0.025 max |
| Chromium (Cr) | 1.30 – 1.60 |
| Nickel (Ni) | 0.30 max |
Physical Properties
- Density: 7.85 g/cm³
- Tensile Strength (Rm): 850 – 1000 MPa
- Yield Strength (Rp0.2): 700 – 850 MPa
- Elongation (A): ≥ 12%
- Hardness (HB): 200 – 250
Machinability
100Cr6 steel offers good machinability, but its high hardness after heat treatment can make it more challenging to machine. Using carbide tools or high-speed steel (HSS) with appropriate cutting speeds and coolants can help maintain tool life during machining operations like turning, drilling, and grinding.
Machining Tips:
- Use carbide tools or HSS for efficient machining.
- Moderate cutting speeds should be used to reduce tool wear.
- Apply proper cooling during machining to avoid heat buildup.
Weldability
100Cr6 has relatively low weldability due to its high carbon and chromium content. If welding is required, preheating and post-weld heat treatment are recommended to avoid cracking and to reduce residual stresses. For best results, use low hydrogen electrodes and make sure to apply proper cooling methods.
Welding Tips:
- Preheat the steel before welding to avoid cracking.
- Use low hydrogen electrodes to ensure high-quality welds.
- Post-weld heat treatment is essential to relieve stresses.
Applications
- Rolling bearings
- Gears
- High-performance shafts
- Tooling components
- Automotive components
- Industrial machine parts
Heat Treatment
- Annealing: Reduces hardness and increases machinability.
- Quenching and Tempering: Enhances hardness and wear resistance, especially for bearing applications.
Advantages
- Excellent wear resistance and hardness.
- High fatigue strength, ideal for bearings and gears.
- Good machinability with proper tooling.
- Retains hardness even at high operating temperatures.