Products

GCr15 – JIS:SUJ2 Carbon Bearing Steel Pipe Krobo Steel

Product Introduction 

GCr15 steel is a representative steel grade of high-carbon chromium bearing steel with good comprehensive properties. After quenching and tempering, the hardness is high and uniform, and the wear resistance and contact fatigue resistance are high. Good thermal workability. It has good machinability after spheroidizing annealing, but is sensitive to the formation of white spots. It is mainly used to manufacture steel balls, rollers and bushings on drive shafts of internal combustion engines, electric locomotives, machine tools, tractors, rolling equipment, drilling machines, railway vehicles and mining machinery, etc.

 

GCr15 Carbon Steel Chemical Composition:

Element Composition (%)
Carbon (C) 0.95-1.05
Silicon (Si) 0.15-0.35
Manganese (Mn) 0.25-0.45
Phosphorus (P) ≤0.025
Sulfur (S) ≤0.025
Chromium (Cr) 1.40-1.65
Nickel (Ni) ≤0.30
Copper (Cu) ≤0.25

 

Application:

GCr15 after quenching and tempering, the hardness is high and uniform, and the wear resistance and fatigue resistance are high. Good thermal workability. It has good machinability after spheroidizing annealing, but is sensitive to the formation of white spots. It can be used to manufacture various bearing rings with wall thickness ≤12mm and outer diameter ≤250mm; it can also be used for rolling elements with a wide range of sizes, such as steel balls, tapered rollers, cylindrical rollers, spherical rollers, needle rollers, etc.; it can also be used to manufacture molds, precision measuring tools and other mechanical parts that require high wear resistance, high elastic limit and high contact fatigue strength. It is mainly used to manufacture steel balls, rollers and bushings on drive shafts of internal combustion engines, electric locomotives, machine tools, tractors, rolling equipment, drilling machines, railway vehicles and mining machinery, etc.

Classification By Size:

The length is generally 6000mm, 1250mm,2200mm,12000mm, and the thickness is distinguished by cold rolling and hot rolling. Cold rolling mainly has thickness 1.0mm, 1.2mm, 1.5mm, 2.0mm, 2.5mm, 3.0mm. The main thickness of hot rolling is 3.0mm, 4.0mm, 6.0mm, 8.0mm, 10.0mm, and the width is generally 1000mm, 1219mm, 1500mm.Please contact customer service for general specifications.

 

Hot-rolled carbon steel pipe are produced by continuous hot-rolled carbon steel technology with hot-rolled steel strip or cold-rolled steel strip as the substrate. The hot-rolled carbon steel sheet is supplied as a rectangular flat plate by cross-cutting; the hot-rolled carbon steel sheet is supplied in coil form by coiling, and the hot-rolled carbon steel sheet coil can be divided into hot-rolled carbon steel sheet coil and cold-rolled carbon steel sheet Coils, they are mainly used in construction, home appliances, automobiles, containers, transportation and household business and other fields. Especially steel structure construction, automobile manufacturing, steel silo manufacturing and other industries.

 

Their main features are: strong corrosion resistance, good appearance quality, benefit from deep processing, economical and practical, etc.

Application range:

(1)After annealing, it is processed into ordinary cold rolling;

(2) The galvanizing unit with pre-annealing treatment device processes galvanizing;

(3) Panels that basically do not need to be processed.

Why Choose Us?

*Top 20 companies in steel industry trade volume.

*Customized processing steel one-stop purchase.

*Exports of steel exceeded tens of billions for 5 consecutive years.

**We have a complete set of testing equipment, such as ut & ET, hydraulic testing equipment, spectrometer, scanning electron microscope, etc, and have passed SGS TUV

Our Quality Assurance Policy has established guidelines for providing products and services that exceed customer expectations. certified company.