gcr15 rolling bearing steel
gcr15 round steel
gcr15 steel wire
gcr15 steel plate
GCr15 is a high carbon chromium bearing steel, which is widely used in bearing manufacturing for its excellent wear resistance, high contact fatigue strength and good dimensional stability. This steel can obtain high and uniform hardness after quenching and low-temperature tempering, and is suitable for a variety of mechanical parts and precision gauges that are subject to high loads and require high wear resistance.
The chemical composition of GCr15 is as follows:
- Carbon (C): 0.95% ~ 1.05%
- Silicon (Si): 0.15% ~ 0.35%
- Manganese (Mn): 0.20% to 0.40%
- Phosphorus (P): ≤ 0.025 per cent
- Sulfur (S): ≤ 0.025%
- Chromium (Cr): 1.30%~1.65
- Molybdenum (Mo): ≤ 0.10 per cent
- Nickel (Ni): ≤ 0.30%
- Copper (Cu): ≤0.25%
- Ni+Cu≤0.50%.
3. Physical properties
The physical properties of GCr15 include:
- Density: 7.8 g/cm³
- Coefficient of thermal expansion: 11×10-K (20°C to between)
- Modulus of elasticity: 208 GPa
- Poisson's ratio: 0.3.
4. Mechanical properties
The mechanical properties of GCr15 are as follows:
- Hardness in supplied state (HRC): 25.8
- Tensile strength (MPa): 861.3
- Yield strength (MPa): 518.42
- Elongation after break(%): 27.95
- Flexural strength (MPa): 1821.61.
5. Processing and welding performance
GCr15 cold working plasticity is medium, cutting performance is general, welding performance is poor, the formation of white point sensitivity can be large, tempering brittleness.
The heat treatment system of GCr15 is:
- Ordinary annealing: 790-810 degrees heating, furnace cooling to 650 degrees, air cooling - HB170-207
- Isothermal annealing: 790-810 degrees heating, 710-720 degrees isothermal, air cooling - HB207-229
- Normalising: 900-920 degrees heating, air cooling - HB270-390
- High temperature tempering: 650-700 degrees heating, air cooling - HB229-285
- Hardening: 860 degrees heating, oil quenching - HRC62-66
- Low temperature tempering: 150-170 degrees tempering, air cooling - HRC61-66.
7. Application areas
GCr15 is widely used:
- Manufacture of bearing rings and rolling bodies, such as bearing rings with wall thickness ≤12mm and outer diameter ≤250mm;
- Balls with a diameter of 25.4-50.8 mm; rollers with a diameter of <22 mm;
- Bear large loads, high wear resistance, high elastic limit and high contact fatigue strength of other mechanical parts and a variety of precision gauges and cold-drilling moulds.
Our Promise
1. How much per kilogram?
1.3USD per kilogram.
2. What is the minimum order quantity?
From one kilogram.
3. How many mm long is the typical material?
Usually 6000mm long.
4. Can I have it cut for free?
Yes, we have cutting equipment.
5. Can I receive payment through vtb bank?
Yes, you can.
6. What if I get a bad material?
We will resend it to you.
7. What is the payment method?
TT/30%/70
8. Can I inspect the goods?
You can inspect the goods in person or appoint a third party to inspect the goods.
9. How long has your company been established?
16 years
10. How can I be sure that the goods I receive are qualified?
Our company has its own spectrometer, each batch of materials will be tested and photographed for the customer to keep a record. 11.
11. What is your delivery time?
7-10 days for stock, 30-45 days for cus
Common Specifications
GCr15|Φ10 Bearing Steel
GCr15|Φ11 Bearing Steel
GCr15|Φ12 Bearing Steel
GCr15|Φ13 Bearing Steel
GCr15|Φ14 Bearing Steel
GCr15Φ15 Bearing Steel
GCr15Φ16 Bearing Steel
GCr15Φ17 Bearing Steel
GCr15Φ18 Bearing Steel
GCr15Φ19 Bearing Steel
GCr15Φ20 Bearing Steel
GCr15Φ21 Bearing Steel
GCr15Φ22 Bearing Steel
GCr15|Φ23 Bearing Steel
GCr15Φ24 Bearing Steel
GCr15Φ25 Bearing Steel
GCr15Φ26 Bearing Steel
GCr15Φ28 Bearing Steel
GCr15Φ29 Bearing Steel
GCr15Φ30 Bearing Steel
GCr15Φ32 Bearing Steel
GCr15Φ35 Bearing Steel
GCr15|Φ38 Bearing Steel
Audited Supplier 
The chemical composition of GCr15 is as follows:
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