420 Stainless Steel round Pipe/Tube

Properties and Standards of 420 Stainless Steel Round Tubes

420 stainless steel round pipes, also known as "cutting grade" martensitic steel, come in different variants:

• 420J1 stainless steel round tubes: Good wear and corrosion resistance
• 420J2 stainless steel round tubes: Enhanced hardness and durability

International standards for 420 stainless steel round pipes include:

• American: ASTM standards
• Japanese: SUS420J2
• Chinese: 30Cr13 (new), 3Cr13 (old)
• Digital Code: S42030
• European: 1.4028

Heat Treatment and Technical Specifications

Our 420 stainless steel round tubes undergo specific heat treatment processes:

Quenching Temperature Range:

• Standard range: 980-1050°C
• Optimal temperature: 1000°C
• Results at 980°C: HRC45-50
• Results at 1050°C: +2HRC higher

Key Characteristics:

• Post-heat treatment hardness: HRC52-55
• Carbon content: 0.16-0.25%
• Magnetic properties
• Easy machining and polishing
• Superior rust resistance

Applications and Advantages

420 series stainless steel round tubes excel in various applications due to their:

• Excellent cutting properties
• Superior polishing capabilities
• Good corrosion resistance
• Cost-effective pricing
• Magnetic properties

Ideal applications for 420 stainless steel round pipes include:

• Knife manufacturing
• Diving equipment
• General industrial use
• Standard stainless steel applications
• Projects requiring good machinability

While the damage resistance may not be exceptional, the combination of hardness, rust resistance, and machinability makes 420 stainless steel round tubes perfect for specialized applications requiring these specific properties.