420 Stainless Steel Square Tube: Cost - Effective and High - Performance Solution The 420 stainless steel square tube is a medium - carbon chromium stainless steel, characterized by 12 - 14% chromium content and a minimum of 0.15% carbon (with a typical value of 0.31%). This specialized variant provides a cost - effective alternative for a wide array of industrial applications, without compromising on essential performance features. Product Parameter Table Property Details Chromium Content 12 - 14% Carbon Content Min. 0.15% (Typical: 0.31%) Maximum Operating Temperature 650°C Heat Treatment Options Solution treatment, Quenching, Annealing Grain - related Improvements Improved grain boundary structure, Enhanced grain size control Welding Characteristics (Low - Carbon Version) Excellent Carbide Precipitation Reduced Localized Corrosion Minimized Strength and Durability Balanced Size Specification Table Outer Side Length Wall Thickness Standard Length 10 mm 0.8 mm, 1.0 mm, 1.2 mm 5 m 15 mm 1.0 mm, 1.2 mm, 1.5 mm 5 m 20 mm 1.2 mm, 1.5 mm, 2.0 mm 5 m 25 mm 1.5 mm, 2.0 mm, 2.5 mm 5 m ... (continue with other sizes) ... ... Manufacturing Standards and Equivalents Our 420 stainless steel square tube adheres to multiple international standards: ASTM Compliance: Meets ASTM A276 - 2006 requirements. UNS Standard: Corresponds to UNS S42000. Chinese Equivalent: Equivalent to 3Cr13 stainless steel tube in China. Carbon Variations: Available in both low and high carbon versions. Cost and Performance Benefits Cost - Effectiveness: Offers a more affordable option compared to many other stainless steel grades. Welding Advantages: The low - carbon version exhibits excellent welding characteristics. Carbide and Corrosion Control: Reduces carbide precipitation and minimizes localized corrosion. Performance Balance: Strikes a good balance between strength and durability. Applications and Recommendations Ideal Applications: Low - Temperature Environments: Performs optimally in cold conditions. Welding - Intensive Projects: Thanks to its good welding properties (especially in the low - carbon version). Cost - Sensitive Applications: Provides cost - effective solutions without sacrificing quality. Structural Support Systems: Offers reliable structural support. Recommendation for High - Temperature Applications: For applications involving high temperatures, we suggest considering alternative stainless steel square tube grades with enhanced heat resistance. Our technical team is available to provide detailed guidance in choosing the most suitable grade for your specific needs.