GCr15 hot rolled steel round bars

GCr15 is a common steel which is used to produce balls and rings of bearing.GB GCr15 bearing steel is GB standard Alloy Bearing steel, It belong to the high quality high carbon, alloy chromium,manganese steel.

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Steel Round Bars

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Product Details

Product introduction

GCr15 is a common steel which is used to produce balls and rings of bearing. The product has characteristics of the uniform-chemical composition, low percentage of harmful elements, high purity, well-distributed carbide, good surface quality. It also has characteristics of a wide scope of plastic，stable heat-treatment quality, uniform, and high hardness, high wear resistance，high strength of touching fatigue. It has excellent machining property after spheroidize annealing. GB GCr15 bearing steel is GB standard Alloy Bearing steel, It belong to the high-quality high carbon, alloy chromium, manganese steel. GB GCr15 properties is a chromium, manganese alloy steel specification. GCr15 is equivalent to AISI 52100, DIN 100Cr6. Most applications can replace each other.

Technical data

Chemical composition

C(％)	0.95～1.05	Si(％)	0.15～0.35	Mn(％)	0.25～0.45	P(％)	≤0.025
S(％)	≤0.025	Cr(％)	1.40～1.65

Mechanical Properties

The mechanical properties of annealed GB GCr15 bearing steel (typical for steel) are outlined in the table below:

Tensile	Yield	Bulk modulus	Shear modulus	Poisson’s ratio	Thermal conductivity
MPa	Mpa	Gpa	Gpa		W/mK
520	415 Min	140	80	0.27-0.30	46.6

Heat treatment Related

Annealing of GCr15 Alloy bearing steel

Slowly heated to 790-810 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. Different annealing ways will get different hardness.The GCr15 bearing steel will get Hardness MAX 248 HB （Brinell hardness）.

Quenching and temperature of GCr15 Alloy bearing steel

Heated slowly to 860°C, Then quenching by oil get 62 to 66 HRc hardness. High temperature tempering: 650-700℃，cool in air, get hardness 22 to 30HRC. Low temperature tempering: 150-170 ℃， Cool in ari, get 61-66HRC hardness.

Hot work and cold work of GCr15 Alloy bearing steel

GB GCr15 steel can hot worked at 205 to 538°C, GCr15 Bearing steel can be cold worked using conventional techniques in the annealed or normalized conditions.

Applications

GB GCr15 steel is widely used for a variety of applications in the used to the bearings in rotating machinery. Typical applications such as valve bodies, pumps and fittings, the high load of wheel, bolts, double-headed bolts, gears, internal combustion engine. Electric locomotives, machine tools, tractors, steel rolling equipment, boring machine, railway vehicle, and mining machinery transmission shaft on the steel ball, roller and shaft sleeve, etc.

Factory profile

Adhering to the tenet of "integrity first, quality for survival", the company has established a complete marketing channel of "based in North China, radiating the whole country, and facing the world", and has not only established a solid strategic partnership with many domestic and foreign enterprises.We have been committed to product development, production and sales, after more than ten years of efforts, our products have been widely used in various fields.

Packing method: Packing according to customer's requirement.

The company has more than 110,000 square meters of production and processing base, fully introduced the international advanced modern automatic production and processing equipment, and took the lead in passing the ISO9001, TS16949, BV, SGS and other international well-known institutions certification.The products are mainly exported to Italy, Mexico, South Korea, Israel, Turkey, India, Pakistan, Kyrgyzstan, Oman, Kazakhstan, Vietnam, Myanmar and other countries. The company's supply is sufficient, the variety is complete, order production is fast, welcome domestic and foreign manufacturers, traders to contact us.

Company Advantages
1. We are a large-scale production enterprise integrating production, research and development, and can customize the products required by customers.
2. We have a perfect after-sales service system, which can track the problems encountered by customers in production at any time and provide corresponding technical support, so as to share our high-quality resources with customers.
3. After more than ten years of development, the company has complete product varieties and large inventory, which can be delivered in the shortest time.
4. Free samples are available.
5. With obvious price advantage, the company has complete production process, from raw materials to finished products integrated production can maximize the cost savings.