Duplex stainless steel ASTM 329(S32900)

Posted:2015-11-30 02:18:13

Stainless steels are classified into martensitic, ferritic and austenitic based on their crystalline structure. In addititon, they form another group known as precipitation-hardened steels, which are a combination of martensitic and austenitic steels.

Properties	Metric	Imperial
Tensile strength, ultimate	725 MPa	105000 psi
Tensile strength, yield (@0.2%)	550 MPa	79800 psi
Charpy impact	54 J	39.8 ft-lb
Elastic modulus	190 – 210 GPa	27557 – 30458 ksi
Poisson’s ratio	0.27 – 0.30	0.27 – 0.30
Elongation at break (in 50 mm)	25%	25%
Hardness, Brinell	230	230
Hardness, Knoop (converted from Brinell hardness)	253	253
Hardness, Rockwell B	96	96
Hardness, Rockwell C (converted from Brinell hardness)	20	20
Hardness, Vickers (converted from Brinell hardness)	242	242

Chemical Composition
C (Carbon)	0.08% Max
Fe (Iron)	Balance
Mn (Manganese)	1.0% Max
Si (Silicon)	0.75% Max
S (Sulphur)	0.03% Max
P (Phosphorus)	0.04% Max
Cr (Chromium)	23-28%
Ni (Nickel)	2.5-5.0%
Mo (Molybdenum)	1.0-2.0%

Duplex Stainless Steel 329 was one of the earliest duplex steel which is reflected in its higher permitted carbon content. Its resistance to pitting (PREN about 32) and to crevice corrosion is below that of super duplex steels, therefore use in seawater is limited. Exposure to moderate and high temperature and less rapid cooling may cause embrittlement. Accordingly, design stress values in ASME II do not extend above 260°C for S32900. Impact values are high at room temperature. However, the proportion and orientation of ferrite in welds and base material may significantly affect toughness at subzero temperatures.

Duplex Stainless steel 329 can be used for heat exchangers, chemical tanks, refineries, shafts (marine, etc) pressure vessel parts, flanges, fittings & pipes for the oil and gas industries and offshore technology, paper industry, compressor parts and seawater desalination plants amongst many other applications.

Katalor is one of the preeminent manufacturers and suppliers of Duplex Stainless Steel 329 Round Bars. Immensely useful for construction industries, these bars are offered by us in various sizes and finishes to choose from. Complying the industrial norms, our round bars last for long duration and available in bulk quantities at most reasonable rates.

Phone: 0086-18317160019
TEL: 0086-21-61182423
Fax: 0086-21-61182425
E-mail: [email protected]
Skype: shanghai.katalor
Address : Room 301,Unit 6,lane 2500,xiupu Road,Kangqiao Industrial Area,Pudong New District,Shanghai

InquiryPlease feel free to give your inquiry in the form below. we will reply you quickly!

Name:	*
E-mail:	*
Country:	*
Tel:

Company:
Language:
Product:	steel plate steel pipe shipbuilding steel
Message:	Please enter details such as Material, Specification, Quantity, Port, other requirments !