Cold Rolled Bright Surface Corrosion Resistant AISI 439 Stainless Steel Sheet
Price:
US $1.55-2 / kg
MOQ:
100 kg
Delivery Time:
Negotiable
Product Description
EN 1.4510 DIN SUS439m AISI 439 Stainless Steel Sheet
The composition of 439 stainless steel has been balanced to provide a completely ferritic structure at all temperatures, ensuring maintained ductility after welding and excellent resistance to intergranular corrosion.
Unlike similar ferritic stainless steels such as 430 and 434 alloys, which are susceptible to brittle martensite formation after welding and intergranular corrosion sensitivity, 439 stainless steel does not require annealing after welding to restore ductility or provide intergranular corrosion resistance.
Key Advantages
- Excellent resistance to stress corrosion cracking
- Superior weldability characteristics
- High thermal conductivity
- Low thermal expansion properties
- Low cobalt content for nuclear applications
These properties make 439 stainless steel an ideal choice for many industrial applications. For shell and tube heat exchangers where carbon steel shells are used with 439 tubes, the close match of thermal expansion coefficients may eliminate the need for expansion joints.
Application Areas
When application temperatures exceed the capabilities of 409 stainless steel, 439 stainless provides excellent oxidation and corrosion resistance for automotive exhaust system components and residential furnace primary heat exchangers.
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. We stock 439 hot and cold rolled stainless steel sheet, plate, strip and coil.
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Company
JIANGSU MITTEL STEEL INDUSTRIAL LIMITED
Location
No.283-1, Youyi Middle Road, Xishan District, Wuxi City, Jiangsu Province
Contact Person
Gao Ben