SUJ2 Bearing Steel
SUJ2 steel is a Japanese JIS standard high carbon chromium bearing steel grade. After heat treatment, it has high and uniform hardness, good dimensional stability and corrosion resistance, but the weldability is poor.
SUJ2 material is used to make various bearing rings and rolling elements, such as steel balls, tapered rollers, cylindrical rollers, spherical rollers, needle rollers, etc. It can also be used to manufacture molds, precision measuring tools, etc.
Data Sheet & Specification
SUJ2 Steel Steel Chemical Composition
The chemical composition of SUJ2 bearing steel are displayed in the following table.
| SUJ2 Steel Chemical Composition % | ||||||||||
| Standard | Steel Grade | C | Si | Mn | P ≤ | S ≤ | Cr | Ni ≤ | Mo ≤ | Cu ≤ |
| JIS G4805 | SUJ2 | 0.95-1.10 | 0.15-0.35 | ≤ 0.50 | 0.025 | 0.025 | 1.30-1.60 | 0.25 | 0.08 | 0.25 |
Note: The Cu content of the wire rod shall be 0.20% or less.
SUJ2 Steel Mechanical Properties
Spheroidizing annealed hardness
- SUJ2 Material Brinell hardness: ≤201 HBW
- Material Rockwell hardness: ≤94 HRB
SUJ2 Equivalent Grades
SUJ2 steel equivalent to ISO, US ASTM AISI SAE, European EN, Germany DIN, British BS, France NF, and Chinese GB standard. (For reference)
| SUJ2 equivalent grades | |||||||||||||
| Japanese | USA | European | China | ISO | |||||||||
| Standard | Grade | Standard | Grade | Standard | Grade (Steel Number) | Standard | Grade | Standard | Grade | ||||
| JIS G4805 | SUJ2 | AISI SAE, ASTM A295/A295M | 52100 | EN ISO 683-17 | 100Gr6 (1.3505) | GB/T 18254 | GCr15 Steel | ISO 683-17 | 100Gr6 (1.3505) | ||||
1) Ø2.495/2.500, length – 8.0/8.2mm, Material : SUJ2, Hardness: 58/62 RC; Requirement: 40 lakh pieces per year
2) Ø2.495/2.500, length – 7.9/8.1mm, Material : SUJ2, Hardness: 58/62 RC; Requirement: 33 lakh pieces per year
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