Cold Rolled Bright Surface SUS439 Stainless Steel Coil Strip 1220*2440mm JIS G4305-2012
Price:
US $1.55-2 / kg
MOQ:
100 kg
Delivery Time:
Negotiable
Product Description
JIS G4305-2012 SUS439 Stainless Steel Coil Strip
The composition of 439 stainless steel has been balanced to provide a completely ferritic structure at all temperatures, ensuring no loss of ductility after welding and providing 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 does not require annealing after welding to restore ductility or provide intergranular corrosion resistance.
Excellent resistance to stress corrosion cracking, good weldability, high thermal conductivity, and low thermal expansion characteristics make 439 stainless steel an ideal choice for many 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 an expansion joint. With low cobalt content compared to Type 304, 439 stainless is particularly attractive for nuclear applications.
When application temperatures are too high for 409 stainless, 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 in various specifications.
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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