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Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B

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Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B

Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B
Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B

Large Image :  Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B

Product Details:

Place of Origin: China
Brand Name: BoYue
Certification: ISO,BV,SGS
Model Number: BYWN00043

Payment & Shipping Terms:

Minimum Order Quantity: 1 pcs
Price: Negotiable
Packaging Details: PLY-WOODEN CASE OR PALLET
Delivery Time: 10-100 days depending on quantity
Payment Terms: L/C, T/T, Western Union
Supply Ability: 40000pcs per month
Detailed Product Description
SIZE: 1/2" - 24" PROCESS: FORGED
CLASS RATING: 150#, 300#, 400#, 600#, 900#, 1500#, 2500# SEALING FACE: RTJ/FF/RF
FACE FINISH: SMOOTH /STOCK FINISH PRODUCT NAME: Weld Neck Pipe Flanges
APPLICATION: CHEMICAL /OIL/GAS/ENERGY STANDARD: DIN,ANSI,ASME
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26 - 48" RF FF RTJ 2205 Weld Neck Duplex Stainless Steel Pipe Flanges ASME B16.47 Series B

 

ASME B16.47(Large Diameter Steel Flanges) is a standard for large diameter steel flanges sized from NPS 26 through NPS 60. The latest version provides dimensions and ratings in both metric and inch units. The ASME B16.47 inherently incorporate MSS SP-44: Steel Pipeline Flanges and API 605: Large Diameter Carbon Steel Flanges. Therefore, the MSS SP-44 flanges are designated as ASME B16.47 Series A flanges, while API 605 flanges are designated as ASME B16.47 Series B flanges within this standard. Materials covered in this standard are as that in ASME B16.5 except for nickel alloys which means they share the same pressure-temperature chart for the selection of flange materials.

 

2.ASME B16.47 Series B / API 605 Class 600 WN

 

Norminal Pipe Size O.D.of Flange, O Min.Thick-ness of WN Flange, tf Lenth Through Hub, Y Diam. of Hub, X Hub Diam. Top, A Raised Fase Diam., R Bore (XS) Diam of Bolt Circle No.of Bolt Holes Diam.of Bolt Hole Min.Fillet Radius, r1 Approxi-mate Weight kgs
26 890 111.2 181 698 660.4 727 635.0 806.4 28 44.5 13 259.28
28 950 115.9 190 752 711.2 784 685.8 863.6 28 47.6 13 299.55
30 1020 125.5 205 806 762.0 841 736.6 927.1 28 50.8 13 372.00
32 1085 130.2 216 860 812.8 895 787.4 984.2 28 54.0 13 432.05
34 1160 141.3 233 914 863.6 953 838.2 1054.1 24 60.3 14 542.78
36 1215 146.1 243 968 914.4 1010 889.0 1104.9 28 60.3 14 593.49

 

3.DUPLEX Steel 2205:Stainless Steel - Grade 2205 Duplex (UNS S32205)

 

Chemical Composition

 

Fe, <0.03% C, 21-23% Cr, 4.5-6.5% Ni, 2.5-3.5% Mo, 0.8-2.0% N, <2% Mn, <1% Si, <0.03% P, <0.02% S

 

Introduction

 

Duplex 2205 stainless steel (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.

At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.

 

Key Properties

 

The properties that are mentioned in the below tables pertain to flat rolled products such as plates, sheets and coils of the ASTM A240 or A240M. These may not be uniform across other products such as bars and pipes.

 

Composition

 

Table 1 provides the compositional ranges for grade 2205 duplex stainless steel.

 

Table 1 - Composition ranges for 2205 grade stainless steels

 

Grade   C Mn Si P S Cr Mo Ni N
2205 (S31803)

Min

Max

-

0.030

-

2.00

-

1.00

-

0.030

-

0.020

21.0

23.0

2.5

3.5

4.5

6.5

0.08

0.20

2205 (S32205)

Min

Max

-

0.030

-

2.00

-

1.00

-

0.030

-

0.020

22.0

23.0

3.0

3.5

4.5

6.5

0.14

0.20

 

Mechanical Properties

 

The typical mechanical properties of grade 2205 stainless steels are listed in the table below. Grade S31803 has similar mechanical properties to that of S32205.

 

Table 2 - Mechanical properties of 2205 grade stainless steels

 

Grade Tensile Str
(MPa) min
Yield Strength
0.2% Proof
(MPa) min
Elongation
(% in 50mm) min
Hardness
Rockwell C (HR C) Brinell (HB)
2205 621 448 25 31 max 293 max

 

Physical Properties

 

The physical properties of grade 2205 stainless steels are tabulated below. Grade S31803 has similar physical properties to that of S32205.

Table 3 – Physical properties of 2205 grade stainless steels

Grade Density
(kg/m3)

Elastic
Modulus

(GPa)

Mean Co-eff of Thermal
Expansion (μm/m/°C)
Thermal
Conductivity (W/m.K)

Specific
Heat
0-100°C

( J/kg.K)

Electrical
Resistivity
(nΩ.m)
0-100°C 0-315°C 0-538°C at 100°C at 500°C
2205 782 190 13.7 14.2 - 19 - 418 850

 

Grade Specification Comparison

 

Table 4 provides the grade comparison for 2205 stainless steels. The values are a comparison of functionally similar materials. Exact equivalents may be obtained from the original specifications.

Table 4 - Grade specification comparisons for 2205 grade stainless steels

Grade UNS
No
Old British Euronorm

Swedish

SS

Japanese

JIS

BS En No Name
2205 S31803 / S32205 318S13 - 1.4462 X2CrNiMoN22-5-3 2377 SUS 329J3L

 

Possible Alternative Grades

 

Given below is a list of possible alternative grades, which may be chosen in place of 2205.

 

Table 5 - Grade specification comparisons for 2205 grade stainless steels

Grade Reasons for choosing the grade
904L Better formability is needed, with similar corrosion resistance and lower strength.
UR52N+ High resistance to corrosion is required, e.g. resistance to higher temperature seawater.
6%Mo Higher corrosion resistance is required, but with lower strength and better formability.
316L The high corrosion resistance and strength of 2205 are not needed. 316L is lower cost.

 

Corrosion Resistance

 

Grade 2205 stainless steel exhibits excellent corrosion resistance, much higher than that of grade 316. It resists localized corrosion types like intergranular, crevice and pitting. The CPT of this type of stainless steel is around 35°C. This grade is resistant to chloride stress corrosion cracking (SCC) at temperatures of 150°C. Grade 2205 stainless steels are apt replacements to austenitic grades, especially in premature failure environments and marine environments.

 

Heat Resistance

 

The high oxidation resistance property of Grade 2205 is marred by its embrittlement above 300°C. This embrittlement can be modified by a full solution annealing treatment. This grade performs well at temperatures below 300°C.

 

Heat Treatment

 

The best suited heat treatment for this grade is solution treatment (annealing), between 1020 - 1100°C, followed by rapid cooling. Grade 2205 can be work hardened but cannot be hardened by thermal methods.

 

Welding

 

Most standard welding methods suit this grade, except welding without filler metals, which results in excess ferrite. AS 1554.6 pre-qualifies welding for 2205 with 2209 rods or electrodes so that the deposited metal has the right balanced duplex structure.

Adding nitrogen to the shielding gas ensures that adequate austenite is added to the structure. The heat input must be maintained at a low level, and the use of pre or post heat must be avoided. The co-efficient of thermal expansion for this grade is low; hence the distortion and stresses are lesser than that in austenite grades.

 

Machining

 

The machinability of this grade is low due to its high strength. The cutting speeds are almost 20% lower than that of grade 304.

 

Fabrication

 

The fabrication of this grade is also affected by its strength. Bending and forming of this grade requires equipment with larger capacity. Ductility of grade 2205 is lesser than austenitic grades; therefore, cold heading is not possible on this grade. In order to carry out cold heading operations on this grade, intermediate annealing should be carried out.

 

Applications

 

Some of the typical applications of duplex steel grade 2205 are listed below:

  • Oil and gas exploration
  • Processing equipment
  • Transport, storage and chemical processing
  • High chloride and marine environments
  • Paper machines, liquor tanks, pulp and paper digesters

Duplex Stainless Steel Weld Neck Flange 26 - 48" ASME B16.47 Series B 0

 

Why Choose Us

 

1.One-Stop Service,One Single Source.

2.No MOQ.

3.Best quality,competitive price

4.Fast Reply.

5.On-Time Delivery

6.Professional sales and technical team .

 

FAQ

 

Q1: Are you a factory or a trade company?
A1: We are a professional manufacturer for designing and producing of Large-size products.(View Mor)

Q2: Do you make customized products or finished parts?
A2: All parts are custom made only, and in stock, we can produce based on your drawings.

Q3: Will my drawing be safe after you get it?
A3: Yes, we will not release your design to third party unless with your permission.

Q4: What is the MOQ?
A4: Small order is acceptable, but the more, the cheaper.

Q5: How about the samples?
A5: We are happy to make prototype part or sample for clients to ensure quality standard, but it’s charged according to your drawing.

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Contact Person: david

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