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Tube specification 

 

31803 2205 stainless steel pipe tube

Model No.︰BS-600
Brand Name︰BS
Country of Origin︰China
Unit Price︰US $ 8000 / ton
Minimum Order︰1 ton
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Product Description

S31803(2205) Duplex stainless steel tube

Material summary and usage

S31803 steel is ultra-low carbon dual- phase stainless acid resistant steel. It is provided with excellent pitting corrosion and crevice corrosion resistant performances. In addition, nitrogen, as a strong element that forms and stabilizes austenite, still ensures the existence of certain amount of austenite in the structure even if after welding or heating under high temperature, and makes it difficult to form single-phase ferrite. The dual-phase proportion is not sensitive to the change of heating temperature.

 

Chemical composition(%)

Standard

No.

C

(max)

Si

(max)

Mn

(max)

P

(max)

S

(max)

Cr

Ni

Mo

N

ASTM

S31803

0.030

1.00

2.00

0.030

0.020

21.0-23.0

4.5-6.5

2.5-3.5

0.08-0.20

EN

1.4462

0.030

1.00

2.00

0.035

0.015

21.0-23.0

4.5-6.5

2.5-3.5

0.10-0.22

 

Mechanical properties

No.

Tensile Strength

sb(Mpa)

Yield Point

ss(Mpa)

Elongation Rate  

d5(%)

HB

HRC

S31803

620

450

25

290

30.5

 

Application fields

It is suitable for manufacturing various industrial heat exchangers, especially in the H2S condition that contains chlorides, acetic acid and other organic acid solutions: conveying pipes in oilfields, oil ports and well heads; air coolers for oilfields and gas fields; air coolers for refineries and hydrogen cracking towers; PE coolers; seawater desalting exchangers, etc.





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