204Cu Stainless Steel Soft Wire: Technical Specifications

The 204Cu stainless steel soft wire is an advanced chromium-magnesium austenitic stainless steel, enhanced with 2-4% copper and nitrogen content of 0.05-0.25%. This premium stainless steel soft wire exhibits slight magnetic properties after cold working, offering distinct advantages over traditional austenitic stainless options. Through specialized processing techniques, even these minimal magnetic properties can be further reduced.

Applications of 204Cu Stainless Steel Soft Wire

Our 204Cu stainless steel soft wire excels in various industrial applications:

• Coal slurry filtration equipment
• High-performance hinge pins
• Tobacco industry baskets
• Specialized components requiring:
  • Enhanced strength
  • Non-magnetic properties
  • Superior galling resistance compared to 304/304HQ

Chemical Composition of Premium Soft Wire

The 204Cu stainless steel soft wire features a precisely controlled composition:

• Chromium: 15.50-17.50%
• Manganese: 6.5-9.0%
• Copper: 2.00-4.00%
• Nickel: 1.50-3.50%
• Carbon: 0.15% max
• Nitrogen: 0.05-0.25%
• Silicon: 1.00% max
• Molybdenum: 1.00% max
• Sulfur: 0.030% max
• Phosphorus: 0.060% max
• Iron: Balance

Physical Properties of 204Cu Stainless Steel Soft Wire

Key characteristics include:

• Density: 0.282 lb/in³ (7.81 g/cm³)
• Electrical Resistivity: 30.039 ohm-inch (0.763 microhms-m)
• Modulus of Elasticity: 29 x 10³ KSI (200 x 10³ MPa) in tension
• Melting Range: 2552-2642°F (1400-1450°C)

Mechanical Performance Specifications

Annealed Condition

Our 204Cu stainless steel soft wire in annealed state offers:

• Ultimate Tensile Strength: 92 KSI (635 MPa)
• Yield Strength: 42 KSI (290 MPa)
• Elongation: 75%
• Reduction in Area: 77%

Cold Worked Properties

Available in various cold work percentages:

20% Cold Worked

• Ultimate Tensile Strength: 123 KSI (849 MPa)
• Yield Strength: 104 KSI (718 MPa)
• Elongation: 34%

40% Cold Worked

• Ultimate Tensile Strength: 160 KSI (1104 MPa)
• Yield Strength: 150 KSI (1035 MPa)

60% Cold Worked

• Ultimate Tensile Strength: 208 KSI (1435 MPa)
• Yield Strength: 176 KSI (1214 MPa)
• Elongation: 18%
• Reduction in Area: 62%

Thermal Properties of Stainless Steel Soft Wire

Our 204Cu stainless steel soft wire maintains excellent thermal conductivity across various temperatures:

• At 122°F (50°C): 93.79 BTU-in/hr-ft²-°F
• At 392°F (200°C): 118.31 BTU-in/hr-ft²-°F
• At 752°F (400°C): 142.44 BTU-in/hr-ft²-°F

The thermal expansion coefficient varies with temperature, providing stable performance across a wide operating range:

• 77-212°F: 9.50 µin/in-°F
• 77-572°F: 10.05 µin/in-°F
• 77-1112°F: 10.77 µin/in-°F