JIS SUJ2 steel stockholders and China suppliers. Otai Special Steel have more 16 years experience in jis SUJ2 Bearing Steel round bar, flat bar., rod bar, wire and plate supply.

JIS SUJ2 Steel is a high quality Alloy Bearing Steel, It belong to the high quality high carbon alloy Bearing Steel. Quenched & Tempered Hardness is 28-34 HRc. SUJ2 steel Annealing delivery hardenss less than 250HB.

Related Specifications ASTM A29/A29M DIN EN 10083/3 JIS G4805 GB GB/T 3077

Form of Supply

JIS SUJ2 Bearing Steel China Supplier and Stocker, Otai Special Steel can supply the round bar, steel flat bar, plate, hexagonal steel bar and steel square block. AISI SUJ2 steel Round bar can be sawn to your required lengths as one offs or multiple cut pieces. SUJ2 steel Rectangular pieces can be sawn from flat bar or plate to your specific sizes. Ground Bearing Steel bar can be supplied, providing a quality precision finished bar to tight tolerances.

steel bar

Chemical composition of SUJ2 Bearing steel

C(％) 0.95-1.10 Si(％) 0.15-0.35 Mn(％) 0.50 max P(％) ≤0.025
S(％) ≤0.025 Cr(%) 1.30-1.60

Equivalent Of SUJ2 alloy Bearing Steel

USA Germany China Japan France England Italy Poland ISO Korea Sweden Spain
AISI/SAE/ASTM/UNS DIN,WNr GB JIS AFNOR BS UNI PN ISO KS SS UNE
 E52100 / G52986 100Cr6 / 1.3505 GCr15 SUJ2 100C6 535A99 100Cr6(B1) STB2 SKF3

Heat treatment Related

  • Annealing of SUJ2 Bearing Steel

Slowly heated to 790-810 ℃ and allow enough times, let the steel to be thoroughly heated, Then cool slowly in the furnace. Different annealing ways will get different hardness. The SUJ2 bearing steel will get Hardness MAX 248 HB （Brinell hardness）

  • Hardening of SUJ2 Bearing Steel

Heated slowly to 860°C, Then quenching by oil get 62 to 66 HRc hardness. High temperature tempering: 650-700℃，cool in air, get hardness 22 to 30HRC. Low temperature tempering: 150-170 ℃， Cool  in ari, get 61-66HRC hardness.

  • Tempering of SUJ2 Bearing Steel

Tempering of SUJ2 steels is performed at 480-530°C, Soak well at the selected temperature and soak for at least one hour per 25mm of total thickness. Hardness values at different temperatures after tempering HRC: 150°C-61HRc,200°C-60HRC,300°C-56HRC,400°C-51HRC,500°C-43HRC,550°C-38HRC,600°C-33HRC,650°C-29HRC.

Mechanical Properties

The mechanical properties of SUJ2 Bearing Steels are outlined in the following table.

Tensile strength Conditions to yield strength Elongation Reduction of area Hardness (Hot Rolled) Hardness (Cold Drawn)
σb (MPa)：≥1274(130) σ0.2 (MPa)：≥1176(120) δ10 (%)：≥5 ψ (%)：≥25 ≤321HB;

Applications

SUJ2 steels, Highlight the advantage is good hardenability, another hot working performance, comprehensive mechanical properties,

Decarburization resistance is also good big cross section of various important Bearing, such as automobile, locomotive, large plate Bearing, Bearing, etc. SUJ2 Bearing main used for heavy vehicles, tractors, industrial production load, stress and the diameter of the larger plate Bearing and helical Bearing

Regular size and Tolerance

Steel round bar: Diameter Ø 5mm – 3000mm

Steel plate: Thickness 5mm – 3000mm x Width 100mm – 3500mm

Steel Hexagonal bar: Hex 5mm – 105mm

Others SUJ2 have not specified size, pls contact our experienced sales team.

Processing

JIS SUJ2 Bearing Steel round bar and flat sections can be cut to your required sizes. SUJ2 Bearing Steel ground bar can also be supplied, providing a high quality Bearing Steel precision ground Bearing Steel bar to your required tolerances. JIS SUJ2 steel is also available as Ground Flat Stock / Gauge Plate, in standard and nonstandard sizes.

Contact our experienced sales team to help you with your SUJ2 Bearing Steel questions and enquiry by Email or Telephone. The questions will be reply in 24 hours.

OTAI SPECIAL STEEL CO., LTD

Email: jack@otaisteel.com   TEL: 0086-769-33232622   FAX: 0086-769-88705839