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  • Name: GCr15 bearing steel
  • Code: 032
  • Time: 2011-05-18
  • Views : 999999999
  • Sold amount: 0Piece

Product Name: Bearing Steel

Product Type: GCr15

Standard: YB (T) 1-1980

● Features and Scope: good overall performance, quenching and tempering, the hardness of high and uniform, wear resistance, and contact fatigue strength. Good thermal processing of steel, the ball good after annealing machinability. Wall thickness should be made ≤ 12mm, ≤ 250mm diameter all bearing rings, ball diameter ≤ 50mm, conical, spherical roller diameter ≤ 22mm and all size needle; can also be used to make measuring tools, mold, wood cutting tools

● Chemical Composition:

Carbon C: 0.95 ~ 1.05

Si Si: 0.15 ~ 0.35

Manganese Mn: 0.25 ~ 0.45

S S: ≤ 0.025

P P: ≤ 0.025

Chromium Cr: 1.40 ~ 1.65

Ni-Ni: ≤ 0.30 to allow the residual content

Copper Cu: ≤ 0.25 to allow the residual content

Mo Mo: ≤ 0.08 to allow the residual content

Note: Allow the residual content of Ni + Cu ≤ 0.50

● Mechanical Properties:

Tensile strength σb (MPa): 1617 impact energy Akv (J):

28, Hardness: 61 ~ 64HRC

Sample size: a sample

● Heat treatment and microstructure specifications:

Heat Treatment Specification: 850 ~ 860 ℃ quenching, oil cooling; 160 ℃ tempered 2h. Microstructure: martensite.

● Delivery status: the hot-rolled (wrought) annealing, without annealing, annealing strip steel, cold drawn (rolled) round steel, polished bar, hot-rolled steel, annealed steel strip, cold drawn (rolled) steel eight state of delivery.