420J2 Stainless Steel Square Tube: High - Performance Solution Our 420J2 stainless steel square tubes are crafted with precision and adhere to multiple international standards, ensuring top - notch quality and reliability. Compliance with International Standards Standard Designation American ASTM standard - Japanese standard SUS420J2 Chinese standard 30Cr13 (new), 3Cr13 (old) Digital code S42030 European standard 1.4028 Superior Performance over 420J1 Compared to 420J1, our 420J2 stainless steel square tubes offer enhanced performance, especially in terms of hardness and corrosion resistance. Product Parameter Table Property Details Hardness after Quenching HRC52 - 55 Magnetic Properties Present Wear Resistance Enhanced Carbon Content 0.16 - 0.25% Rust Resistance Excellent Machinability Good Polishing Capabilities Superior Heat Treatment Specifications The heat treatment process plays a crucial role in determining the properties of 420J2 stainless steel square tubes. Heat Treatment Aspect Details Quenching Temperature - Optimal Range 980 - 1050°C Quenching Temperature - Recommended 1000°C Result of Recommended Quenching Balanced structure and hardness, avoids coarse, brittle microstructure, achieves optimal performance Size Specification Table Outer Side Length Wall Thickness Standard Length 10 mm 1 mm, 1.5 mm, 2 mm 6 m 15 mm 1.5 mm, 2 mm, 2.5 mm 6 m 20 mm 2 mm, 2.5 mm, 3 mm 6 m ... (continue with other sizes) ... ... Applications and Usage Our 420J2 stainless steel square tubes are versatile and suitable for a wide range of applications: Applications Requiring High Hardness: Ideal for cutting tools where durability is essential. Environments Needing Corrosion Resistance: Can withstand harsh industrial and outdoor environments. Cutting Tool Manufacturing: Forms the backbone of high - quality cutting tools. Precision Instrument Components: Ensures accurate and reliable performance. Industrial Applications: From machinery parts to conveyor systems. Key Benefits Excellent Rust Resistance: Protects against corrosion, extending the lifespan of the product. Good Machinability: Facilitates easy shaping and fabrication. Superior Polishing Capabilities: Results in a smooth and attractive finish. Balanced Carbon Content: Contributes to its overall performance. Cost - Effective Performance: Offers high - quality performance at a reasonable cost. Our technical team is always on standby to provide detailed guidance on selecting the most suitable stainless steel square tube grade, whether it's 420J2 or other specialized grades, to meet your specific application requirements.