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Bearing Steel GCR15 wire rod is generally used for bearing needle and ball production. To meet the requirements of strength and toughness, fatigue resistance, and wear resistance, high quality is required. Bearing steel has high carbon content and carbides will be precipitated in different degrees during continuous casting. Some researches show that the homogeneity of the carbide has a great influence on the service life of the bearing. To eliminate the above defects, higher heating temperature and longer holding time are needed before rolling bearing steel to eliminate carbide inhomogeneity. Bearing steel has high hardness, tensile strength, contact fatigue strength, wear resistance, and considerable toughness, which meets the requirements of corrosion resistance and high-temperature resistance under certain conditions.
Bearing steel hot-rolled wire rod is mainly used for manufacturing ball bearings (ball) and so on.
Standard
|
API / ASTM /JIS/GB
|
Grades
|
SAE52100、AISI E52100、UNS G52986 SUJ2 Gcr15
|
Size
|
φ5-φ13 |
Packaging
type |
Basis for
packing |
Additional material mix for packaging | ||||||||
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
A
Normal packaging |
Wire rod+
Steel bands(4bands at 4 positions) |
+pasteboard for side-ring protection | +PP+PE bag | +precoated
braid |
+rust-proofing paper+adhesive membrane | +pasteboard for side-ring protection
+precoated braid |
+pasteboard for side-ring protection
+rust-proofing paper +adhesive membrane |
+precoated braid
+adhesive membrane |
+pasteboard for side-ring protection
+precoated braid +adhesive membrane |
+PP+PE
wrap |
B
Reinforced packaging |
Wire rod+
Steel bands(8bands at 4 positions) |
+pasteboard for side-ring protection | +PP+PE bag | +precoated
braid |
+rust-proofing paper+adhesive membrane | +pasteboard for side-ring protection
+precoated braid |
+pasteboard for side-ring protection
+rust-proofing paper +adhesive membrane |
+precoated braid
+adhesive membrane |
+pasteboard for side-ring protection
+precoated braid +adhesive membrane |
+PP+PE
wrap |