Super Duplex Pipe Stainless Steel Seamless Tube ASTM A790 UNS S32304 SAF2304

Super Duplex Pipe Stainless Steel Seamless Tube ASTM A790 UNS S32304 SAF2304

SAF2304 Duplex Stainless Steel Seamless Pipe Duplex Pren ≥24.0 UNS S32304

General attributes:

The PRE value of SAF2304 duplex stainless steel is Pren ≥24.0, which is equivalent to that of 316L stainless steel. When we tested the relationship between the critical pitting temperature (CPT) and chloride ion content of several steels in NaCl solution at a potential of 300mV, we found that the CPT value of ASF2304 duplex stainless steel is higher than 304L, which is equivalent to 316L. The test results of several steels in a neutral chloride solution of an autoclave found that the applied stress was equivalent to the yield strength of the steel at this temperature. The test time was 1000 hours. Below the curve, there was an area where stress corrosion cracking did not occur.

In addition, SAF2304 dual-phase steel has good resistance to intergranular corrosion and can pass the test of CuSO4 + H2SO4 copper chip method. SAF2304 duplex steel has good corrosion resistance in nitric acid, comparable to 304L. In other acids, such as sulfuric acid, its corrosion resistance is equivalent to 316L. In organic acids, such as formic acid, it is even better than 316L.

Material: SAF2304 S32304

Chemical composition of SAF2304 (UNS S32304) duplex stainless steel:
Average (% by weight)
C: 0.020
Cr: 23.00
Ni: 4.00
Mo: 0.20
N: 0.10
PREN (Cr%) + 3.3 (Mo%) = 16 (N%) ≥ 24

Implementation standards:

ASTM A789 (ASME SA789)

ASTM A790 (ASME SA790)

ASTM A928 (ASME SA928)
 

Specifications of the Duplex Stainless Steel Seamless Pipe:
Outer diameter Φ6—630mm; wall thickness: 1-50mm, maximum length 18000mm
Special specifications are available upon negotiation.

Performance characteristics:
1. Excellent resistance to general corrosion and local corrosion, especially stress corrosion resistance, pitting corrosion resistance, crevice corrosion resistance, corrosion fatigue resistance and wear resistance etc.
2. Good solderability
3. Good comprehensive mechanical properties
4. Good resistance to intergranular corrosion
5. High cost performance and long service life

Delivery form:Sheet, strip, bar, pipe (welded and seamless pipe), wire, forging, light rod, flange, welding

SHANGHAI ABOOM METAL PRODUCT CO.,LTD

Address:ROOM 412,NO.452 CHEFENG ROAD,

SongjiangDistrict , Shanghai ,201601,P.R.China