JIS Suj2 Steel Bearing Steel Forged Hot Rolled Round Bar Flat Plate

• Type: Round
• Standard: AISI, ASTM, DIN, JIS, GB, BS
• Composition: Stainless Steel Scrap
• Technique: Hot Rolled
• Shape: Bar
• Surface Treatment: Black/Milled/Machined
• Model NO.: round bar
• Special Use: High-strength Steel Plate, Wear Resistant Steel, Silicon Steel, Cold Heading Steel, Free Cutting Steel, Mold Steel
• Application: Tool Steel Bar
• Transport Package: Wooden
• Specification: 6-400mm 2mm-25mm
• Trademark: Smooth
• Origin: China
• HS Code: 8455300000

Product Description

JIS SUJ2 Steel:
JIS SUJ2 is a Japanese high carbon chromium bearing steel known for its excellent wear resistance, high hardness, and good toughness. It is equivalent to ASTM 52100, DIN 100Cr6, and EN31. Commonly used in the manufacturing of bearings, bushings, and other mechanical components requiring high strength and wear resistance.

Chemical Composition (%):
·Carbon (C)  0.95-1.10
·Chromium (Cr)    1.30-1.60
·Manganese (Mn)         0.25-0.45
·Silicon (Si)    0.15-0.35
·Phosphorus (P)    ≤0.025
·Sulfur (S)      ≤0.025

Properties:
·High Hardness: JIS SUJ2 steel exhibits high hardness after heat treatment, making it suitable for bearing applications where wear resistance is critical.
·Excellent Wear Resistance: Its high carbon and chromium content contribute to superior wear resistance, ensuring long service life even under high-load conditions.
·Good Toughness: Despite its high hardness, JIS SUJ2 steel maintains good toughness, allowing it to withstand impact and shock loads.
·Moderate Machinability: Machining JIS SUJ2 steel can be challenging due to its hardness, but it can be machined using carbide tools and appropriate cutting parameters.
·Moderate Weldability: It can be welded using conventional welding methods, but preheating and post-weld heat treatment may be required to minimize the risk of cracking.

Heat Treatment:
·Annealing: Heat to 800-850°C, then furnace-cool at a rate of no more than 10°C per hour. This relieves internal stresses and improves machinability.
·Hardening: Heat to 800-850°C, then oil quench to achieve maximum hardness.
·Tempering: Temper at temperatures ranging from 150-200°C to achieve the desired combination of hardness and toughness.

Surface Treatment:
·Surface treatment methods such as grinding, polishing, and coating can further enhance the performance and corrosion resistance of JIS SUJ2 steel. These treatments improve surface quality and wear resistance, extending the service life of components made from this steel.

Quality Assurance:
·Strict quality control measures are essential during the production of JIS SUJ2 steel to ensure compliance with industry standards and customer requirements. Quality assurance processes include material testing, inspection, and certification to guarantee product reliability and performance.

Applications:
·Bearings: JIS SUJ2 steel is widely used in the manufacture of rolling bearings, including ball bearings, roller bearings, and tapered roller bearings.
·Bushings and Mechanical Components: It finds applications in various mechanical components such as bushings, shafts, gears, and piston pins in automotive, aerospace, and machinery industries.

Industry Trends and Developments:
The demand for JIS SUJ2 steel is expected to grow steadily due to its superior mechanical properties and versatility in various engineering applications. Ongoing research and development efforts focus on enhancing the performance and applicability of this steel in emerging industries and advanced technologies.