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F55(UNS S32760)
F55(UNS S32760)
Category：Super stainless steel
Phone :+86 17863510107
WhatsApp : +86 17863510107
Email : cici@hamanjinshu.com
Add : Hunan Road,Liaocheng Shandong,China P.C.252000
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Product Parameter :

F55 Material introduction

F55(UNS S32760)Its pitting corrosion index (PRE) is higher than 40. It belongs to super duplex stainless steel with excellent corrosion resistance and strength characteristics. Compared with UNS S32205, SUS 329J3L and SUS 329J4L (NAS 64), it has good local corrosion resistance and can be used for complete chemical equipment, complete seawater desalination equipment, etc. The company can supply forgings, flanges and pipe fittings.


F55 chemical composition

element

C

Si

Mn

P

S

Ni

mass fraction／%

≤0.030

≤1.00

≤1.00

≤0.030

≤0.010

6.0-8.0

element

Cr

Mo

N

Cu

W

PRE

mass fraction／%

24.0-26.0

3.0-4.0

0.20-0.30

0.50-1.00

0.50-1.00

≤40


F55 Physical and mechanical properties

density

melting point

8.0g/cm³

1400-1450℃



tensile strength
N/MM²

0.2%yield strength
N/MM²

Elongation
%

hardness
RB

730-930

≥530

≥25

-


F55 Heat treatment system

The solution treatment temperature is 1080 ℃ - 1120 ℃ (above 1100 ℃ when it is required to meet ASTM standards), and quenching must be carried out after heat treatment. The cooling speed shall be as fast as possible, and the exposure to embrittlement temperature range (475 ℃ embrittlement temperature range σ Brittleness temperature range).