439 stainless steel spring wire

Type 439 is an 18% chromium, titanium-stabilized ferritic stainless steel, offering corrosion resistance comparable to that of 304/304L stainless steel. This grade is highly versatile, ideal for use in annealed, cold-formed, or as-welded conditions where other stainless steels like Type 304/304L and Type 430 are typically applied. Type 439 stainless steel spring wire is especially valued for its excellent weldability, thanks to titanium stabilization, and outstanding resistance to stress corrosion cracking. With superior oxidation and corrosion resistance compared to Type 409, Type 439 stainless steel spring wire is commonly utilized in applications such as tubular manifolds and exhaust system components.

Specifications of 439 Stainless Steel Spring Wire

• Specification: ASTM A313
• Grade: 439
• Diameter Range: 0.60 mm to 6.0 mm (0.023 to 0.236 inches)
• Temper: Available in Half Hard, 3/4 Hard, Hard, and Full Hard
• Tolerance: Complies with ASTM A313 / EN 10270-3
• Surface: Bright or Matt finish

Key Features

• High flexibility
• Low maintenance requirements
• Extended service life

Packaging Options

• Wooden Spool
• Plastic Spool
• Compact Coil

Why Choose Us for Stainless Steel Spring Wire

1. Competitive Pricing: We provide the ideal material according to your specifications at highly competitive rates.
2. Flexible Shipping Options: Our options include Reworks, FOB, CFR, CIF, and door-to-door delivery, with economical solutions.
3. Material Verification: From raw material test certificates to final dimensional reports, all materials are fully verifiable on request.
4. Prompt Response: We guarantee responses within 24 hours (often sooner).
5. Flexible Stock Options: We offer stock alternatives and mill deliveries to minimize production times.
6. Customer-Centric Approach: We are dedicated to customer satisfaction and transparency. If we can’t meet your requirements, we communicate openly to maintain trust.

Quality Assurance by JYTSTEEL

Our comprehensive quality assurance program includes both destructive and non-destructive testing:

1. Visual Dimension Test
2. Mechanical Testing (tensile strength, elongation, reduction of area)
3. Impact Analysis
4. Chemical Composition Analysis
5. Hardness Testing
6. Pitting Resistance Test
7. Penetrant Test
8. Intergranular Corrosion Testing
9. Surface Roughness Testing
10. Metallographic Examination

With 439 stainless steel spring wire, you can expect top performance in demanding environments, backed by our rigorous quality assurance and commitment to excellence.