DIN 1.4462 Fasteners, Duplex Steel Head Square Neck Bolts Suppling, Duplex Steel Stud Bolts, Duplex Steel Threaded stud, Duplex Steel hex head screw, Duplex Steel Square Nut, Duplex Steel Allen Cap screw Manufacturing, Duplex Steel Hex Domed Cap Nuts Suppling, Duplex Steel Stud Bolts Supplier & Exporter in Mumbai India.
Alpha Overseas(AOS) is identified as a Stockist of Duplex Steel S31803 / S32205 Fasteners, which is not generally suitable for use at temperatures above 300 Degree C as it suffers from precipitation of brittle micro constituents. Duplex Steel S31803 Fasteners has higher strength which is around twice that of Type 304 austenitic stainless steel. As a result, Duplex Stainless Steel UNS S31803 Fasteners display properties characteristic of both austenitic and ferritic stainless steels. UNS S31803 Duplex Steel Fasteners has High strength, Good sulphide stress corrosion resistance, and Excellent impact toughness. Duplex Steel S32205 Fasteners is the most widely used duplex stainless steel grade, which is characterized by high yield strength. The structure of Duplex Stainless Steel UNS S32205 Fasteners consists of austenite pools surrounded by a continuous ferrite phase. UNS S32205 Duplex Steel Fasteners is generally supplied in the annealed condition giving yield strengths. The high yield strength of Duplex Steel S31803 Nuts is double that of the standard austenitic stainless steel grades. Duplex Steel S32205 Nuts is widely used in oil & gas, pressure vessels, hydro power, pulp & paper, chemical tankers and structural components.
Duplex Steel S31803 Fasteners
Duplex Steel S32205 Fasteners
Duplex Stainless Steel UNS S31803 Fasteners Suppling, UNS S31803 Duplex Steel Fasteners Manufacturing, Duplex Stainless Steel UNS S32205 Fasteners, UNS S32205 Duplex Steel Fasteners Exporters, Duplex Steel Nuts, Duplex Steel Bolts, Duplex Steel Washers Leading Manufacturer & Stockist in Mumbai, India.
Duplex Steel S31803 Bolts is a duplex stainless steel whose design enables combining improved resistance to pitting, stress corrosion, high strength, cracking and crevice corrosion. However, Duplex Steel S32205 Bolts shows rapid increase in the strength below 900 Degree C. It Duplex Steel S31803 Washers maintains good weldability in their thickest sections. Duplex S32205 Washers are much more resistant to stress corrosion cracking than standard austenitic steels.
Our products are made from superior quality Raw Material and are available in Customized Designs to suit different requirements of the clients. Our contemporary technology and constant efforts to acquire new skills to enhance production is the secret of our success and impeccable quality.
ASTM A479 / ASME SA479 Duplex Steel Fasteners Specification :
Size : M02 to M30
Standards : DIN, ASTM, BS and all International Standards
Specification : ASTM A479 / ASME SA479, F51, F60
Length : 3 mm to 200 mm
Form : Bolts, nuts, Washers, Anchor Fasteners, Stud Bolts, Eye Bolt, Stud, Threaded Rod, Cotter Pin, Socket Screw, Fine Fasteners & Spares, Foundation Fasteners, etc.
Grade : UNS NO. S 31803, S 32205, S 32550, S 32750
Duplex Steel S31803 / S32205 Fasteners Equivalent Grades
Duplex Steel S31803 / S32205 Fasteners Chemical Composition
||22.0 – 23.0
||3.0 – 3.5
||4.50 – 6.50
||0.14 – 0.20
||21.0 – 23.0
||2.50 - 3.50
||4.50 – 6.50
||0.8 – 0.20
Duplex Steel S31803 / S32205 Fasteners Mechanical & Physical Properties
||Yield Strength (0.2%Offset)
|Duplex Steel S31803 / S32205
||1350 °C (2460 °F)
||Psi – 116000 , MPa – 800
||Psi – 80000 , MPa – 550
Testings (Destructive, Non Destructive):
- Positive Material Identification - PMI Testing
- Chemical Analysis - Spectro Analysis
- Mechanical Testing Such as Tensile, Elongation, Reduction of Area
- Micro Test
- Macro Test
- Hardness Test
- Pitting Resistance Test
- Intergranular Corrosion (IGC) Test
- Flaring Test
- Flattening Test
- Hydrostatic Test
- Hydrogen-Induced Cracking (HIC) Test, NACE TM0284
- Sulfide Stress Corrosion Cracking (SSC), NACE TM 0177
- Radiography Test
- Dye Penetrant Test (DP Test)
- Ultra Sonic Test (UT)
- Eddy Current Testing
- Impact Test
- Bend Test
- We understand the importance of packaging specially in case of international shipments as the consignment has to go through a number of channels to reach the final destination, thus we take proper care of packing.
- We pack our goods in a various ways depending on the products. The different ways in which our products are packed are:
- Wooden Boxes
- Wooden Pallets
- Wooden Crates
- Carton boxes
- All our products will have complete marking details which are co-related to the test certificates we supply.
- In case of orders for cut piece of Pipes, Sheets or Round Bars, the marking is transferred from the product from which it is cut. In such cases we provide Letter confirming the marking transfer and picture of the product from which it is cut.
- If the items are available in stock, we take 2 days from the date of receipt of advance payment to clear the shipment and send it to port.
- And in-case the items are not availabe in stock, the time taken for manufacturing depends on the size, quantity and grade.
- However we can claim the fact that we can compete with anyone in India on Delivery time and most of the time our production time is the least.
- We have tied up with strong logistic partners in India which can undertake any type of shipping activites and make sure that there is no delay in shipment.
- We welcome stage wise inspection, final stage inspection from any of your representative or third party inspection agencies.
- We regularly have inspections ongoing at our premises from internationally acclaimed Inspection Agencies such as TUV, Llyods, BVIS, SGS, DNV etc.
- We supply Duplex Stainless Steel to Pressure Vessel, Tanks and Heat Exchanger Manufacturers used in Chemical Process Plants and Oil and Gas Exploration
- DSS is used a lot in Marine, Water and Waste Water Treatment Plants
- Duplex is a big yes for Effluent scrubbing systems
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- ASME SA479 Duplex Steel Socket Screw
- Duplex Steel ASTM A479 Cap Screw
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- Duplex ASTM A479 Machine Screw
- Duplex Steel Socket Head Cap Screw
- ASME SA479 Allen Cap screw Stockiest in India
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- Duplex Steel Pan Head Screw
Approved manufacturer of
Industry We Serve
We Supply Our Duplex Steel S31803/S32205 Fasteners in Countries like
ASIA : UAE , SAUDHI ARABIA , OMAN , KUWAIT , BHARAIN , QATAR , JORADAN , ISRAEL , SRILANKA , MALAYSIA , SINGAPORE , BRUNEI, INDONESIA , PHILIPPINES , RUSSIA , TURKEY .
AFRICA : EGYPT , TANZANIA , SOUTH AFRICA , MOROCCO , ALGERIA , TUNISIA .
EUROPE : FRANCE , SPAIN , ITALY , CROATIA , AUSTRIA ,SLOVAKIA , NETHERLAND , CZECHIA , PLOAND , GERMANY , BELGIUM , ALBANIA , SLOVENIA .
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