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Duplex S31803 Stainless Steel Cold Drawn Steel Bar With En 1.4462

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Duplex S31803 Stainless Steel Cold Drawn Steel Bar With En 1.4462

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Brand Name : BAO STEEL

Model Number : 1.4462

Certification : SGS,ISO

Place of Origin : China

MOQ : 1ton

Price : 4250 USD/Ton

Payment Terms : L/C, T/T

Supply Ability : 2000 ton per month

Delivery Time : 7 days

Packaging Details : export packing

Length : 6m 5.8m 12m or as requirements

Standard : ASTM

Dimensions : 6-500MM

Application : Petroleum, chemical industry,

Shape : ROUND

Special Use : Valve Steels

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Duplex S31803 Stainless Steel Cold Drawn Steel Bar With En 1.4462


2205 Duplex Overview


Duplex 2205 is a nitrogen enhanced duplex stainless steel that was developed to combat

common corrosion problems encountered with the 300 series stainless steels. “Duplex”

describes a family of stainless steels that are neither fully austenitic, like 304 stainless, nor

purely ferritic, like 430 stainless. The structure of 2205 duplex stainless steel consists of

austenite pools surrounded by a continuous ferrite phase. In the annealed condition, 2205

contains approximately 40-50% ferrite. Often referred to as the work horse grade, 2205 is

the most widely used grade in the duplex family of stainless steels.

The advantage of a duplex structure is that it combines the favorable qualities of a ferritic

alloy (stress corrosion cracking resistance and high strength) with those of an austenitic alloy

(ease of fabrication and corrosion resistance).

Usage of 2205 Duplex stainless steel should be limited to temperatures below 600° F.

Extended elevated temperature exposure can embrittle 2205 stainless.


Corrosion Resistance

2205 duplex stainless steel is a cost effective solution for many applications where the 300

series stainless steels are susceptible to chloride stress corrosion cracking. Stress corrosion

cracking occurs when stainless steels are subjected to tensile stress, while in contact with

solutions containing chlorides. Increasing temperatures also increase the susceptibility of

stainless steels to stress corrosion cracking.

The combination of chromium, molybdenum and nitrogen convey the good resistance of 2205

to chloride pitting and crevice corrosion. This resistance is extremely important for services

such as marine environments, brackish water, bleaching operations, closed loop water systems

and some food processing applications. The high chromium, molybdenum and nitrogen contents

of 2205 provide corrosion resistance superior to common stainless steels, such as, 316L and 317L

in most environments.

Chemical Composition, %

Cr

Ni

Mo

C

N

22.0-23.0

4.50-6.50

3.00-3.50

.030 Max

0.14-0.20

Mn

Si

P

S

Fe

2.00 Max

1.00 Max

.030 Max

.020 Max

Balance

In what applications is Duplex 2205 used?

  • Chemical process vessels, piping and heat exchangers
  • Pulp mill digesters, bleach washers, chip pre-steaming vessels
  • Food processing equipment
  • Oil field piping and heat exchangers
  • Flue gas desulfurization equipment

ASTM Specifications

Pipe Smls

Pipe Welded

Tube Smls

Tube Welded

Sheet/Plate

Bar

Flanges, Fittings & Valves

A790

A790

A789

A789

A240

A276

A182

Mechanical Properties
Specified Tensile Properties ASTM A240


Ultimate Tensile Strength, ksi Minimum

.2% Yield Strength, ksi Minimum

Hardness Max.

95

65

31 Rockwell C


1) Size and type:


Hexagon Bolt: M6-M64 full thread or half thread
Hexagon Nut: M3-M64
Threaded Rod:4-2000mm
Plain washers:M3-M64
And heavy hex bolts and nuts with all sizes


2) Treatment: cold forging

1. Materials option: Stainless Steel C276, 904L, 304, 304L, 310S, 316, 316L, 321, 317L, 2507,
2205, 254SMO, AL6XN, 1. 4501, 1. 4529.

Super duplex stainless steel F55, F51, F53 HastelloyB & C, Inconel, Incoloy etc.

2. Standards: GB, DIN, JIS, AISI/ASTM/ANSI/AMSE and BS EN, etc.

3. Packing: Cartons then pallet, or wooden box, or by clients' requirements.

4. Exported countries: United States, Germany, Saudi Arabia, South Korea, etc.

5. factory price, accept small order and short delivery time1



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