Overview of 0Cr19Ni8Cu (304Cu) Stainless Steel

Overview of 0Cr19Ni8Cu (304Cu) Stainless Steel

1. Introduction

• 304Cu, also known as 304J1 stainless steel, is an austenitic stainless steel that contains copper.
• Copper is added to the standard 304 alloy to partially replace nickel.

2. Key Features

• The addition of copper (Cu) improves the elongation performance of cold-rolled sheets.
• It reduces the risk of cracking caused by excessive hardening and high residual stress during or after cold working.
• This alloy is ideal for applications requiring deep drawing or bulging performance.

3. Applications

• Commonly used as a substitute for 304 in products with higher forming requirements, such as deep-drawn or expanded components.

4. Standards

• The material is produced under the company-specific standard:
  • “304Cu Hot-Rolled Stainless Steel Strip Provisional Supply Technical Conditions.”

5. Chemical Composition

The composition details of 304Cu (Unit: %) are provided as per technical standards.

6. Performance Benefits

• Improved formability.
• Reduced risk of cracking during or after cold processing.

This makes 304Cu stainless steel an excellent choice for demanding manufacturing processes.