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In the field of bearing manufacturing, the choice of material is crucial as it directly impacts the performance and lifespan of bearings. GGr15c steel, as a high-carbon chromium bearing steel, demonstrates significant advantages compared to other bearing steels.

I. Optimized Chemical Composition

The chemical composition of GGr15c steel is the foundation for its performance advantages. According to data from Huazhou Wang, the chemical composition of GGr15c steel includes carbon (C) 0.95-1.05%, silicon (Si) 0.15-0.35%, manganese (Mn) 0.25-0.45%, chromium (Cr) 1.40-1.65%, as well as trace amounts of molybdenum (Mo), nickel (Ni), copper (Cu), etc. This composition provides excellent hardenability and hardness, while ensuring good wear resistance and contact fatigue strength.

II. Superior Physical Properties

Physical properties are important indicators for evaluating the quality of bearing steels. GGr15c steel has GGr15c steel has proven its leading position in the field of bearing steels through its optimized chemical composition, superior physical properties, excellent wear resistance and fatigue strength, good dimensional stability and corrosion resistance, as well as its wide range of applications. These advantages make GGr15c steel a **material in bearing manufacturing, providing reliable performance guarantees for various industrial applications.a density of 7.8g/cm³, a thermal expansion coefficient of 10-6/11, an elastic modulus of 208GPa, a Poisson's ratio of 0.3, and a hardness of up to 800HV. These data indicate that GGr15c steel outperforms other bearing steels, such as 9Cr18 and Si3N4, in terms of density, thermal expansion, and elastic modulus.

III. Excellent Wear Resistance and Fatigue Strength

GGr15c steel exhibits better wear resistance than GCr9 bearing steel and high contact fatigue strength. This allows bearings made of GGr15c steel to maintain their shape and dimensions even under heavy loads and continuous friction, thereby extending their service life. Additionally, GGr15c steel has a bending strength of 2400MPa and a compressive strength of 3500MPa. These high-strength indicators make GGr15c steel perform exceptionally well in applications that involve high loads and pressures.

IV. Dimensional Stability and Corrosion Resistance

GGr15c steel has excellent dimensional stability, maintaining its shape and dimensions even under varying temperatures and load conditions. This characteristic is crucial for achieving precise fitting and alignment of bearing components. While GGr15c steel does not have the same corrosion resistance as stainless steel, it can be treated or coated to enhance its corrosion resistance.

V. Wide Range of Applications

GGr15c steel is widely used in the manufacturing of small cross-sectional dimension drawing dies, cold punching dies, and cold heading dies. In ball bearing manufacturing, GGr15c steel is used for rolling bearing sleeves with a wall thickness of 12mm and an outer diameter of <250mm, ranging from grade H to grade C. It is also used for steel balls with diameters of 25.4-50.8mm and rollers with diameters of <22mm. Furthermore, GGr15c steel is suitable for manufacturing other mechanical parts that withstand heavy loads, require high wear resistance, high elastic limits, and high contact fatigue strength, as well as various precision measuring tools and cold punching dies.

GGr15c steel has proven its leading position in the field of bearing steels through its optimized chemical composition, superior physical properties, excellent wear resistance and fatigue strength, good dimensional stability and corrosion resistance, as well as its wide range of applications. These advantages make GGr15c steel a good material in bearing manufacturing, providing reliable performance guarantees for various industrial applications.

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