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GCr15 – SUJ2 High Carbon Chromium Bearing Steel Alloy Steel Plate/Coil

Grade GCr15
Tolerance of Size 0/+5mm
Surface Require Black/Grinding/Bright/Polish
Trade Style CIF/Fob/EXW/CFR
Delivery Condition Hot Rolled/Cold Drawn/Forged/Eaf/ESR
Size 10~300mm*155~2200mm*2000~5000mm
Transport Package Container

GCr15 steel is a high-carbon chromium bearing steel with less alloy content, good performance and the most widely used. It is the most commonly used high carbon chromium bearing steel with high hardenability. Its chemical composition and mechanical properties are regulated by the Chinese standard GB/T 18254-2016.  

GCr15 is equivalent to DIN 100Gr6 in Germany standard, SUJ2 in JIS in Japan, and 52100 in the US ASTM standard. GCr15 alloy steel carbon content generally does not exceed 1.05%.

GCr15 alloy steel has the following general characteristics:

(1)High carbon Content: GCr15 is the most commonly used high carbon chromium bearing steel with high hardenability. The carbon content in T10 is generally not exceed 1.05%.

(2)Excellent property: GCr15 has high contact fatigue strength, good dimensional stability and corrosion resistance, moderate cold deformation plasticity, general machinability, poor weldability, sensitive to white spot formation, and class I temper brittleness.

(3)Strong wear resistance: GCr15 has high hardness and strength, the surface is not easy to wear, and it can still maintain good performance under high temperature and high pressure conditions.

Chemical Composition(Wt%) :

Grades

C

Si

Mn

P

S

Cr

Mo

Cu

Ni

GCr15

0.95-1.05

0.15-0.35

0.2-0.4

≤0.027

≤0.02

1.3-1.65

≤0.1

≤0.25

≤0.3

Features
Superior hardness, 60-67 on Rockwell hardness scale (Rc) at room temperature
High carbon chrome alloy steel
Operates continually at temperatures up to 120°C
Used to produce precision ball bearings and roller bearings
Cost-effective
Long working life

Applications

For making all kinds of bearing ring and rolling element, such as steel ball roller and ferrule of inernal combustion engine, electric motorcycle, automonilrd tractors, machine tools, rolling mill, boring machine, mining machinery, general machinery, high load and high speed roating mechanical transmission bearing.

2. Sometimes also used to make tools, such as pumching die and measuring tools

3. The automotive and aircraft industry use Alloy Steel 52100 for a number of different applications including:

★Anti-friction bearings

★Mill rolls

★Taps

★Punches

★Aircraft parts

Chemical Composition(Wt%) :
GradesCSiMnPSCrMoCuNi
GCr150.95-1.050.15-0.350.2-0.4≤0.027≤0.021.3-1.65≤0.1≤0.25≤0.3
Chemical Composition:
ElementCSiMnPSCr
Content (%)0.14-0.19max0.41-1.3max0.025max0.0350.8-1.1
Mechanical Properties:
The mechanical properties of annealed DIN 16MnCr5/1.7131 gearing steel (typical for steel) are outlined in the table below
TensileYieldBulk modulusShear modulusPoisson’s ratioThermal conductivity
MPaMpaGpaGpa W/mK
520415 Min140800.27-0.3046.6

Our service

We provide quality special steel for all industries.Orders of any size, any length, ship fast We carry a unique inventory of specialty special steel Provide related value-adding services : metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.Sawing for small or large quantities, sawing-to-size.Excellent customer service