Ragavendra Engineering , Chennai
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Duplex Stainless Steel

We offer wide gamut of Duplex Stainless Steel to our clients from different verticals. Our company offers according to custom made in compliance with national and international quality standards. We also offer wide range of Duplex Stainless Steel which includes Duplex Stainless Steel 329, Duplex UNS- S31803 Sheet Plate Pipe Tube Bar and many more.

 

Duplex Stainless Steel
Duplex Stainless Steel


Duplex Stainless Steel

We are the Leading supplier from Chennai, Tamilnadu for the following Grades UNS 32750, UNS 32760, S31803, S32205, S32207. We offer wide gamut of Duplex Stainless Steel to our clients from different verticals. Our company offers according to custom made in compliance with national and international quality standards.




Super Duplex - UNS 32750 Stainless Steel Pipes And Tubes

Super Duplex - UNS 32750 Stainless Steel Pipes And Tubes is one of the widely acclaimed product in our company. We offer this with the following parameters

 

  • NS S32750, F55, 1.4501 Super Duplex has enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types

  • This is due to the further additions of chromium, molybdenum, and nitrogen to these grades

  • UNS S32760, F55, 1.4501 combines high strength and good ductility with outstanding corrosion resistance. With UNS S32750, F55, 1.4501 having these attribute it is used in a wide range of marine, oil and gas environments

  • UNS S32750, F55, 1.4501 is the most common super duplex grade


     
Typical analysis                
 C. Cr. Cu. Mn. Mo. N. Ni. P. S. Si. W.
0.03% 24.00- 0.50- 1.00% 3.00- 0.20- 6.00- 0.035% 0.015% 1.00% 0.50-
max 26.00% 1.00% max 4.00% 0.30% 8.00% max max max 1.00%

Minimum Mechanical Properties at Room Temperature

(EN10088-3 1.4501 UNS S32760 F55 160mm dia max - solution treated)

 Tensile (UTS)

730 - 930 N/mm²

 0.2% Proof Stress

530 N/mm² Min

 Elongation 

25% min

 Hardness

290HB Max

 Impact

100J



Other Information

  • Pay Mode Terms: L/C (Letter of Credit), D/A (Documents Against Acceptance), D/P (Documents Against Payment), T/T (Bank Transfer), Other
  • F. O. B. Price Order: 980 INR
  • Minimum Order Quantity: 1 Meter
  • Port of Dispatch: Chennai
  • Production Capacity: 1 TON per month
  • Delivery Time: Immediate
  • Packaging Details: P&F at 2% from sub total






Super Duplex - UNS 32750 Stainless Steel Pipes And Tubes




Duplex 2205 Rods & Pipes


Duplex 2205 Rods & Pipes

DUPLEX 2205ASTM A 182, A 240, A 276,
A 789, A 790, A 815
UNS S31803, S32205
NACE MR0175

Forms of Duplex 2205 Available at Mega Mex

  • Sheet
  • Plate
  • Bar
  • Pipe & Tube (welded & seamless)
  • Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
  • Welding Wire and Welding Electrode

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

 

Fe

2.00 Max

1.00 Max

.030 Max

.020 Max

Balance

 

Mechanical Properties

Specified Tensile Properties ASTM A240


Ultimate Tensile Strength, ksi Minimum

.2% Yield Strength, ksi Minimum

Hardness Max.

95

65

31 Rockwell C





Duplex Stainless Steel 329

With our trained professionals, we supply Duplex Stainless Steel 329. Our company offers this with the following

 

  • 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

 

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%


Other Information

  • Port of Dispatch: Chennai
  • Delivery Time: Immediate



Duplex Stainless Steel 329




Duplex UNS- S31803 Sheet Plate Pipe Tube Bar


Duplex UNS- S31803 Sheet Plate Pipe Tube Bar

Our company trade Duplex UNS- S31803 Sheet Plate Pipe Tube Bar. We also offer standard and custom made by meeting national and international quality standards.


Features


  • UNS S31803, F51, 1.4462 duplex stainless steel is designed to combine improved resistance to stress corrosion cracking, pitting, crevice corrosion and high strength when compared with other stainless alloys

  • Duplex UNS S31803, F51, 1.4462duplex alloy resists chloride environments and sulphide stress corrosion

  • Duplex UNS S31803, F51, 1.4462 is also roughly double the strength of standard austenitic stainless steels

  • These attributes mean that Duplex UNS S31803, F51, 1.4462 can be used successfully as an alternative to standard stainless steel specifications in applications where higher strength and resistance to stress corrosion cracking is required

  • Duplex UNS S31803, F51, 1.4462 is also referred to as 2205.

  • When machining UNS S31803, F51, 1.4462 turning feeds above 0.25mm are recommended whenever possible and SNMG120408 carbide tools are advised for optimum chip breaking of this duplex stainless steel specification

  • For drilling of UNS S31803, F51, 1.4462, high pressure lubrication is recommended and coated carbide tools are preferred

 

Typical Analysis

 

       

 

C.

Mn.

P.

S.

Si.

Cr.

Ni.

Mo.

N.

0.03%
max.

2.00%
max.

0.03%
max.

0.02%
max.

1.00%
max.

21.00-
  23.00%

4.50-
  6.50%

2.50-
  3.50%

0.08-
  0.20%


Minimum Mechanical Properties at Room Temperature
(EN1008-3 1.4462 UNS S31803 F51 160mm dia max - solution treated)


 Tensile (UTS)

650 - 880 N/mm²

 0.2% Proof Stress

448 N/mm² Min

 Elongation 

25% min

 Hardness

290HB Max

 Impact

100J




Other Information

  • Port of Dispatch: Chennai
  • Delivery Time: Immediate





Super Duplex - UNS 32760 Seamless Pipes

We are of the outstanding exporters of Super Duplex - UNS 32760 Seamless Pipes in India. Our company also offers these at competitive prices by meeting industrial quality standards.


Characteristics


  • NS S32760, F55, 1.4501 Super Duplex has enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types

  • This is due to the further additions of chromium, molybdenum, and nitrogen to these grades

  • UNS S32760, F55, 1.4501 combines high strength and good ductility with outstanding corrosion resistance

  • With UNS S32760, F55, 1.4501 having these attribute it is used in a wide range of marine, oil and gas environments. UNS S32760, F55, 1.4501 is the most common super duplex grade


     
Typical analysis                
 C. Cr. Cu. Mn. Mo. N. Ni. P. S. Si. W.
0.03% 24.00- 0.50- 1.00% 3.00- 0.20- 6.00- 0.035% 0.015% 1.00% 0.50-
max 26.00% 1.00% max 4.00% 0.30% 8.00% max max max 1.00%

Minimum Mechanical Properties at Room Temperature

(EN10088-3 1.4501 UNS S32760 F55 160mm dia max - solution treated)

 Tensile (UTS)

730 - 930 N/mm²

 0.2% Proof Stress

530 N/mm² Min

 Elongation 

25% min

 Hardness

290HB Max

 Impact

100J




Other Information

  • Port of Dispatch: Chennai
  • Delivery Time: Immediate



Super Duplex - UNS 32760 Seamless Pipes




Super Duplex Stainless Steel Round Bar


Super Duplex Stainless Steel Round Bar

Round bar sizes and grades

Ragavendra Engineering standard range of round bar includes several grades of stainless steel, including duplex and super-duplex steel. Other grades can be offered on request.

Round bar manufacturing program (incl. nominal chemical composition)
Ragavendra Engineering gradeUNSASTMENCCrNiMoOthers
Sanmac 304/304L S30400/S30403 304/304L 1.4301/1.4307 ≤0.030
18.5 8.5 - -
Sanmac 316/316L S31600/S31603 316/316L 1.4401/1.4404 ≤0.030
17 10.5 2.1 -
Sanmac 4435 S31600/S31603 316/316L 1.4435 ≤0.030 17.5 12.5 2.6 -
Sanmac 4571 S31635 316Ti 1.4571 0.03 17 11 2.1 Ti
Sanmac 22051) S31803/32205 - 1.4462 ≤0.030 22.5 5.5 3.2 N
Sandvik SAF 25071) S32750 - 1.4410 ≤0.030 25 7 4 N
F552) S32760 F55 1.4501 ≤0.030
25 7 3.8 W, Cu, N
Sanicro 28 N08028 - 1.4563 ≤0.020 27 31 3.5 Cu

1) The grade fulfills the requirements of PED 97/23/EC.

2) Contact us for more information.

Standard program round bar

Sandvik's stainless round bar is delivered in random lengths or cut to fixed lengths. It is delivered with the following surfaces, depending on size:

  • Peel turned and burnished (PTB)
  • Peel turned (PT)
  • Rough machined (RM)




Duplex 31803 Bar

Duplex 31803 in Sheet, Plate, Bar

SPECIFICATIONS: GRADE Duplex | UNS S31803 | ASTM/ASME A240 / F51 | Werkstoff 1.4462

We are stockists of 31803 duplex alloys in sheet, plate, and bar directly distributed globally from our UK stock holding warehouse, combined with our large capacity cutting capabilities we can meet requirements for many industries.

The following are the properties of 31803:

Stainless ferritic-austenitic Cr-Ni-Mo steel with nitrogen addition.

High corrosion resistance, especially against stress corrosion cracking in solutions containing chloride.

Good strength properties.

Resistant to inter granular corrosion in the temperature range up to 300°C.

Heat treatment subsequent to welding not necessary.

Surface condition for optimum corrosion resistance: pickled, heat treated free from scale or machined.

Application

Components in the chemical industry, e.g. separator and heat exchanger parts, from the paper industry, oil and gas production, compressor parts, seawater desalination plants.

Technical info mechanical properties height temperature properties physical properties

Chemical Composition (average %)

C

Si

Mn

Cr

Mo

Ni

N

0.025

0.60

1.30

22.60

3.20

5.80

0.17

Standards

EN / DIN

ASTM

UNS

AFNOR

<1.4462 >

X2CrNiMoN22-5-3

A240

S31803

Z2CND22-5 Az



Duplex 31803 Bar




Super Duplex 32750


Super Duplex 32750

Super Duplex 32750 in Sheet, Plate, Bar

SPECIFICATIONS: GRADE Super Duplex | UNS S32750 | ASTM/ASME A240 / F55 | Werkstoff 1.4410

Ragavendra Engineering are a stockholder of the 32750 duplex alloys in sheet, plate, and round bar with the added capability of cutting processes to meet requirements across a number of industries.

 

The following are the properties of 32750 super duplex:

Ferritic-Austenitic stainless steel.

Excellent corrosion resistance against general corrosion, stress corrosion cracking, corrosion fatigue, pitting, crevice and erosion corrosion and possessing very high mechanical strength properties.

Good weldability, post weld heat treatment not necessary.

Max. Temperature for long periods of service: 280°C (536°F) / (300°C/572°F possible for short periods).

Surface condition for optimum corrosion resistance: pickled or machined.

Application

Components in offshore, waste water, sea water desalination and chemical plants with aggressive chloride-containing media e.g. heat exchangers, compressor and pump components.

 

Technical info mechanical properties height temperature properties physical properties

Chemical Composition (average %)

C

Si

Mn

Cr

Mo

Ni

Cu

N

PREN

0.020

0.25

0.55

25.80

3.40

7.00

max. 0.50

0.30

Min. 40

 

Standards

UNS S32750

Hot Forming

Forging

1200 to 950°C / Air cooling

Heat Treatment

Solution annealing:

1150 to 1000°C (2102-1832°F)

Air cooling

Heat Treatment

Solution annealing / quenching:

1100°C (2012°F)

Water , air (thickness below 2mm)

Structure as quenched:

Ferrite + Austenite

Welding

Weldability of super duplex 32750 is good. The welding procedures are similar to those applied for conventional duplex grades. Welding consumables for different welding methods are available.





Duplex & Super Duplex Steel in Sheet, Plate, Bar

Minimum Order : Customer Requirement            

Supplier ability : 500 Tons / Tons per week            

Payment Terms : L/C , T/T          

Material  :  Duplex Rod       

Standard : ASTM / AISI / JIS / DIN / GB       

Length : Cutting for customer Requirement     

Hot Rolled Stainless Steel plate         

Payment : Usually 30% of the amount by T/T as deposit and the balance money show be paid by T/T after got the taxed B/L or L/C.



Duplex & Super Duplex Steel in Sheet, Plate, Bar




303 Stainless Steel Rod


303 Stainless Steel Rod

303 STAINLESS STEEL
Description

303 is a free machining austenitic stainless steel. With the addition of sulfur, this non-magnetic stainless steel allows for smooth, high speed machining. 303 has good corrosion resistance and is used for applications that must have a good deal of machining.

Industry Names

303 Stainless, 303

Available Forms303 Round Bar, 303 Flat Bar, 303 Hex Bar, 303 Plate, 303 Sheet, 303 Coil, 303 Welding Materials, 303 Pipe, 303 Tubing
SpecificationsUNS S30300 (303 Bar)
AMS 5640 Type 1 (303 Bar)
ASTM A582 (303 Bar)
Chemical Composition, %
NiCrMnSiCSPMo Fe
MIN 8.0 17.0 - - - 0.15 - -
MAX 
10.5  19.0  2.0   1.0  0.15 -  0.045 0.60 
Balance 

Attributes

Great Machinability
Good Corrosion Resistance

ApplicationsShafts
Valve Bodies
Food Industry Applications
Physical PropertiesDensity: 0.285 lb/inch3 
Melting Range: 2550-2590°F 
Poisson's Ration: 0.3
Electrical Resistivity: 433Ohm-circ mil/ft

Mechanical PropertiesRepresentative Tensile Properties
Ultimate Tensile Strength, ksi
90
0.2% Yield Strength, ksi
35
Elongation, %
50
Hardness MAX, Brinell 160





Duplex 32750 Bar

Duplex 32750 Bar




 




Ragavendra Engineering , Chennai
Mr. R. Ganaram (Proprietor)
No. 1, 7th Street, Anna Memorial Nagar, Puzhal
Chennai - 600066, Tamil Nadu, India



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