Materials similar to GCr15 include CrWMn, 9SiCr, 9Mn2V, GCrl5, and 9CrWMn, all of which are low alloy tool steels.
GCr15 is one of the most commonly used high-carbon chromium bearing steels with high hardenability and high and uniform hardness after heat treatment.
Wear resistance is better than GCr9, high contact fatigue strength, good dimensional stability and corrosion resistance, cold deformation plasticity is medium, general machinability, poor weldability, sensitive to the formation of white spots, there is the first type of tempering brittleness.
In the ball bearing manufacturing, used to roll the wall thickness of 12mm. outside diameter <250mm H level to C level bearing set, diameter 25.4-50.8mm steel ball.
Diameter <22mm roller, in addition can also be used to withstand large loads, requiring high wear resistance, high elastic limit, high contact fatigue strength of other mechanical parts and a variety of precision gauges, such as cold stamping die.
Chemical composition:
C:0.95-1.05
Mn:0.20-0.40
Si:0.15-0.35
Gcr15 Steel Pipe
S:≤0.020
P:≤0.027
Cr:1.30- 1.65
Mo:≤0.10
Ni:≤0.30
Cu:≤0.25
Ni+Cu≤0.50
Extended Information: GCr15 representation: 1, the two digits at the beginning of the steel number indicates the carbon content of the steel, expressed in parts per million of the average carbon content, such as 40Cr, 25Cr2MoVA alloy tubes 2, the main alloying elements of steel. In addition to individual micro-alloying elements, generally expressed in a few percent, when the average alloy content <1.5%, the steel number is generally only marked with the element symbols, and not marked content. But in special circumstances easily confused, after the element symbols can also be marked with the number "1", such as steel "12CrMoV" and "12Cr1MoV", the former chromium content of 0.4-0.6%, the latter 0.9-1.2%, the rest of the composition of all the same. When the average content of alloying elements ≥ 1.5%, ≥ 2.5%, ≥ 3.5% ......, in the element symbols should be labeled after the content, can be expressed as 2, 3, 4 ...... and so on. For example, 18Cr2Ni4WA. 3, steel vanadium V, titanium Ti, aluminum AL, boron B, rare earth RE and other alloying elements, are micro-alloying elements, although the content is very low, should still be marked in the steel number. For example, in 20MnVB steel. Vanadium is 0.07-0.12%, boron is 0.001-0.005%. 4, advanced quality steel should be added at the end of the steel number "A", in order to distinguish from the general quality steel. 5, special-purpose alloy structural steel, steel crown (or suffix) represents the use of the steel symbol. For example, riveting screw special 30CrMnSi steel, steel number expressed as ML30CrMnSi. Weight Calculation: Name (unit): round steel coil (kg/m) formula: W = 0.006165 × d × d significance: d = diameter mm Calculation example: 0.006165 × 100 × 100 = 61.65kg. ? Reference: