420j2 Stainless Steel round Pipe/Tube

Understanding 420J2 Stainless Steel Round Tubes

420J2 stainless steel round tubes are manufactured to multiple international standards:

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

Compared to 420J1 stainless steel round pipes, 420J2 stainless steel round tubes offer:

• Higher post-quenching hardness
• Enhanced magnetic properties
• Superior wear resistance
• Better corrosion protection
• Cost-effective pricing

Heat Treatment Specifications for 420 Series Round Pipes

Our 420 series stainless steel round tubes undergo precise heat treatment:

• Quenching temperature: 980-1050°C
• Optimal temperature: 1000°C (recommended)
• Post-quenching hardness: HRC52-55
• Carbon content: 0.16-0.25%

Temperature Effects:

• 980°C oil quenching: HRC45-50
• 1050°C oil quenching: +2HRC higher
• 1000°C heating: Optimal structure and hardness balance

Applications and Characteristics

420J2 stainless steel round tubes excel in various applications due to:

• Excellent rust resistance
• Superior cutting properties
• Good polishing capabilities
• Ideal for diving equipment
• Suitable for knife production
• Perfect for general stainless steel applications

These martensitic stainless steel round pipes, often referred to as "cutting grade," provide an excellent balance of:

• Corrosion resistance
• Wear protection
• Machining ease
• Cost efficiency
• Structural integrity

The combination of these properties makes 420J2 stainless steel round tubes an ideal choice for applications requiring both durability and corrosion resistance.