420 Stainless Steel Square Tube

420 stainless steel square tube is a medium-carbon chromium stainless steel, containing 12-14% chromium and a minimum of 0.15% carbon (typical value 0.31%). This specialized variation of stainless steel square tube offers a cost-effective solution for various industrial applications while maintaining essential performance characteristics.

Temperature Performance and Heat Treatment

The 420 stainless steel square tube exhibits specific temperature-related properties:

• Maximum operating temperature: 650°C
• Optimal for low-temperature environments
• Heat treatment options:
  • Solution treatment
  • Quenching
  • Annealing
  • Improved grain boundary structure
  • Enhanced grain size control

Manufacturing Standards and Equivalents

Our 420 stainless steel square tube meets various international standards:

• ASTM A276-2006 compliance
• UNS Standard: S42000
• Chinese equivalent: 3Cr13 stainless steel tube
• Available in both low and high carbon versions

Cost and Performance Benefits

420 stainless steel square tube offers several advantages:

• Cost-effective pricing compared to other grades
• Excellent welding characteristics (low-carbon version)
• Reduced carbide precipitation
• Minimized localized corrosion
• Balanced strength and durability

Applications and Recommendations

Ideal applications for 420 stainless steel square tube include:

• Low-temperature environments
• Welding-intensive projects
• Cost-sensitive applications
• Structural support systems

For high-temperature applications, we recommend exploring alternative stainless steel square tube grades with enhanced heat resistance properties. Contact our technical team for guidance on selecting the optimal grade for your specific requirements.