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Cold Rolled 439 Stainless Steel Sheet with Bright Surface and Corrosion Resistance for Automotive Exhaust Systems

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Cold Rolled 439 Stainless Steel Sheet with Bright Surface and Corrosion Resistance for Automotive Exhaust Systems

Certification : AISI

MOQ : 100 kg

Price : US $1.55-2 / kg

Model Number : 439

Shape : Flat

Technique : Cold Rolled

Surface Treatment : Bright

Specification : 1220*2440, 1500*3000, 1500*6000, 2000*6000mm

Carbon Content : 0.070

Silicon Content : 1.00

Manganese Content : 1.00

Phosphorus Content : 0.040

Sulfur Content : 0.030

Chromium Content : 17.00~19.00

Titanium Content : ≥ 0.20+4(C+N)min - 0.50 max

Tensile Strength : 455

Yield Strength : 290

Elongation : 34

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439 Stainless Steel Properties & Sheet

439 stainless steel features a carefully balanced composition that provides a completely ferritic structure at all temperatures. This unique formulation prevents ductility loss after welding and offers exceptional resistance to intergranular corrosion.

Superior Performance Advantages
  • Eliminates brittle martensite formation after welding (unlike 430 and 434 alloys)
  • No post-welding annealing required to restore ductility or corrosion resistance
  • Excellent resistance to stress corrosion cracking
  • Superior weldability characteristics
  • High thermal conductivity with low thermal expansion
  • Low cobalt content ideal for nuclear applications
  • Excellent oxidation and corrosion resistance for high-temperature applications
Chemical Composition
Grade C Si Mn P S Cr Ti
439 0.070 1.00 1.00 0.040 0.030 17.00~19.00 ≥ 0.20+4(C+N)min - 0.50 max
Typical Annealed State Mechanical Properties
Tensile Strength (MPa) Yield Strength (MPa) Elongation (%) Hardness (HB)
455 290 34 78
Available Product Forms

Hot-rolled wide strip, cold-rolled wide strip, slit strip, cut sheets, precision strip

Stock Availability: 439 hot and cold rolled stainless steel sheet, plate, strip and coil

Cold Rolled 439 Stainless Steel Sheet with Bright Surface and Corrosion Resistance for Automotive Exhaust Systems Cold Rolled 439 Stainless Steel Sheet with Bright Surface and Corrosion Resistance for Automotive Exhaust Systems

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