Super Duplex Steel UNS S32304 Washers, UNS S32304 Super Duplex Steel Washers Supplier & Exporter

GENERAL PROPERTIES:-

Duplex 2304 is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel whose structure is a balance of ferritic and austenitic. It has general corrosion resistance similar or better than Alloys 304L and 316L but with yield strength nearly double that of austenitic stainless steels. Its duplex microstructure and low nickel and high chromium contents also allows Duplex 2304 to demonstrate improved stress corrosion resistant properties compared to 304 and 316. It is typically suitable for all applications in the -58oF to 572oF (-50oC to 300oC) temperature range and is designed to feature high mechanical strength, good weldability, good corrosion resistance, high resistance to stress corrosion cracking, good machinability, low thermal expansion, good fatigue properties, high thermal conductivity, and easy fabrication.

APPLICATION:-

Duplex 2304 is generally used in the same applications in which Alloys 304 and 316L are used. Some examples of these applications include:

• Chloride containing environments
• Welded pipe systems within the Pulp and Paper, Chemical and Petrochemical, and Water Treatment industries
• Transportations
• Heat exchanger tubes
• Architecture, building, construction
• Pressure vessels
• Caustic solutions, organic acids
• Food industry

COROSSION RESISTANCE:-

• Due to its high chromium content of 23%, the corrosion resistance properties of Duplex 2304 are practically equivalent to those of Alloy 316L
• Its duplex microstructure and low nickel and high chromium contents allows Duplex 2304 to have improved stress corrosion resistance properties compared to the 304L and 316L standard austenitic grades.
• More resistant to pitting and crevice corrosion resistance that Alloy 316L
• Outperforms Alloys 304L and 316L in stress corrosion cracking resistance in chloride containing aqueous solutions
• Its corrosion rate in boiling nitric acid (65%) is higher than that of Alloy 316L
• Its high yield strength allows Duplex 2304 to perform well in abrasion/corrosion applications

STRUCTURE:-

• Microstructure of Duplex 2304 is very stable compared to molybdenum containing duplex stainless steels
• Contains approximately equal amounts of ferritic and austenitic in microstructure after annealing in a temperature about

WELDABILITY:-

• Can be successfully welded by TIG manual and automatic, PLASMA, MIG, SMAW, SAW, FCAW
• Duplex microstructure renders the alloy less sensitive to hot cracking
• Pre-heating and post welding is not required
• Filler metal should be a balanced ferrite/austenitic type

MECHINABILITY:-

• Exhibits improved machinability properties particularly when considering drilling
• Low speeds and high feeds will minimize this alloys tendency to work harden

COMPOSITION:

MECHANICAL PROPERTIES:

PHYSICAL PROPERTIES:

STAINLESS STEEL

Grades 18-8, 303, 304, 304L, 316, 316L, 309, 310, 317L, 321, 330, 347, 410, 420, 430, 17-7PH

BOLTS AND SCREWS

ANSI/ASME B18.2.1, B18.3, B18.5, B18.6.2 ASTM A193, A320, F593, F837, F879, F880
HEX HEAD CAP SCREWS, HEAVY HEX BOLTS, T-HEAD BOLTS, LAG SCREWS
CARRIAGE BOLTS, ELEVATOR BOLTS, WEDGE ANCHOR BOLTS
SOCKET SCREWS: SOCKET CAP, FLAT AND BUTTON HEAD, SHOULDER SCREWS, SET SCREWS

MACHINE AND TAPPING SCREWS

ANSI/ASME B18.6.1, B18.6.3, B18.6.4
MACHINE, SHEET METAL, THREAD CUTTING, SELF-DRILLING

NUTS

ANSI/ASME B18.2.2, B18.17, ASTM A194, F594, IFI 128
JAM, FINISHED, HEAVY, COUPLING, WING, NYLON INSERT, SERRATED FLANGE,
SLOTTED (CASTLE), ACORN (CAP), KEPS

WASHERS

ANSI/ASME B18.21.1, B18.22.1, B18.23.1
FLAT, LOCK, BEVELED, EXTERNAL AND INTERNAL TOOTH, COMPRESSION, SAE

THREADED ROD

ASTM A193, A320, F593, IFI 136
3-6-12 FOOT LENGTHS
STUDS: GENERAL PURPOSE, STUD BOLTS, DOUBLE END, SINGLE END

TURNBUCKLES

BENT BOLTS AND EYE BOLTS

ANSI/ASME B18.15, IFI 136
J-BOLTS, HOOK BOLTS, CLOSED AND OPEN EYE BOLTS, FORGED EYE BOLTS

HINGES, NAILS, PINS AND CHAINS

PIPE SUPPORTS, CLAMPS AND STRAPS MSS-SP58, SP69, FIGURE 137
U-BOLTS, CLEVIS HANGERS, RISER CLAMPS, BEAM CLAMPS, 3-BOLT CLAMPS, SHORT STRAPS

Titanium fasteners are among the most commonly manufactured at Harsh Steel. Often known for its light weight, titanium also possesses excellent mechanical properties, able to resist hostile environments, and is used commonly in offshore engineering projects.

Harsh Steel produces duplex fasteners in all grades of duplex, to customer specification. Duplex grades are a mixed microstructure of Austenite and Ferrite, combining the properties of both (hence the name DUPLEX). Duplex stainless steels have high corrosion resistance as well as a high strength. Mechanical properties are around double that of a typical austenitic grade such as 316. They would also normally offer higher stress cracking resistance in Chloride solutions for example. They are composed typically of 22% Chromium, 5 % nickel. Having worked with duplex since its outset, the duplex bolting continues to account for a core part of our business, along with Super duplex.

We are proud that Harsh Steel is the world’s number one bespoke producer of Super Duplex bolting. Super Duplex stainless steel grades are similar to standard duplex, but they contain a higher content of Chromium, thus enhancing the corrosion resistance and mechanical properties. Harsh Steel produces fasteners in all three types of Super Duplex.

Harsh Steel started off producing Stainless Steel bolting in its formative years, and although the company has since diversified into more exotic materials, we continue to offer Stainless Steels and they continue to be an important part of our business, especially if customers require non-standard bolting: i.e. non-standard sizes, special specification, or otherwise difficult to find. We offer all grades of stainless steels, be it Austenitic, Ferritic or Martensitic.

Harsh Steel’s substantial experience in working with high nickel alloys bolting is crucial as they are extremely difficult materials to machine and can require various forms of additional treatment to ensure full conformity. Related by their high percentage of nickel in their composition, these highly corrosion-resistant materials are widely used in the petrochemical and offshore sector, and are often better known by their registered trade names (e.g. Inconel®, Hastelloy®, Monel® and Nimonic®).

INCONEL  BOLTS

We produce inconel fasteners in several grades. Inconels are austenitic nickel-chromium superalloys. They are used in extreme environments, often in gas turbines, nuclear reactors and natural gas processing plants.

HASTELLOY BOLTS

Hastelloy bolts & washers can be most effective under high temperatures and corrosive environments, with high stress resistance.

MONEL  BOlTING

HARSH STEEL manufactures Monel fasteners in A400 and K500. Monel grades are nickel-copper based alloys and have high corrosion resistance and strength properties. They are often used in valves, pumps and heat exchangers.

INCOLOY  BOLTS

HARSH STEEL produces various grades of Incoloy bolts & nuts. Another of the superalloys, it is used in extreme environments.

NITRONIC BOLTS

Nitronic grade fasteners have excellent corrosion resistance properties and strength. It has low magnetic permeability and excellent cryogenic properties.

Harsh Steel has released it own special Super Duplex Fastener Specification Our range of fasteners are manufactured using quality material that are known for high tensile strength and durability. These industrial fasteners are offered with Manufacturer Test Certificate as per EN 10204 / 3.1B. We offer industrial fasteners in different grades such as industrial washers, industrial screws, stainless washers and stainless screws. Available in different sizes, our range of fasteners can be customized as per the specifications of our clients.

Stainless Steel Fasteners

Harsh Steel is amongst the leading manufacturers of quality Stainless Steel Fasteners. These industrial stainless steel fasteners are made using top grade rust resistant steel to provide long life service. Widely used in different industries like defense industry, shipbuilding industry, chemical industry, fertilizer industry, petrochemical industry, refineries and steel plant, these industrial stainless steel fasteners are available in various grades and sizes as per the requirements of our clients.

Specifications

• Standard : ASTM / ASME A/SA 193 / 194
• Grade : B 8 (304), B 8C (SS 347), B 8M (SS 316), B 8 T (SS 321), A 2, A 4

Form

• Bolts : Bolts stud bolts, hex head bolts, socket hexagon head screw anchor bolts, u-bolts, J bolts, mushroom head square neck bolts, t- head bolts, wing screw, eye bolt, eye bolt, foundation bolts and structural bolts
• Washer : Plain washer , plain big & small OD washer , spring lock washer , spring washer heavy duty , tooth washer , star washer , tab washer with one & two tab
• Washers : Hexagon nuts, hexagon coupling nuts, hexagon thin nut, square nut, hexagon castle nuts, self locking nut, hexagon domed cap nuts
• Screw : Pan head slotted screws, cheese head slotted screws, countersunk head slotted screws, countersunk raised head slotted screws, pan phillipse head screw, countersunk Phillipse raised head screws, slotted cheese trim head machine screws, socket head allen cap screws, allen countersunk socket head cap screws, socket head shoulder screws, socket head cap screw low head, hexagon socket set screw with flat point, hexagon socket set screws with cone point, hexagon socket set screw with dog point, hexagon socket set screws with dog point, hexagon socket set screws with cup point, imprial socket cap screws
• Other : Threaded rod, as per drawing and customers spec. coating, hot dipped galvanizing, phosphate, Teflon, xylon, zinc, cadmium.

We export our SUPER DUPLEX STEEL UNS S32750 WASHERS products to Western and Eastern Europe, Saudi Arabia, Bangladesh, United States, United Arab Emirates, Canada, Angola, Argentina, Austria, Azerbaijan, Pakistan, Peru, Chile, Spain, France, United Kingdom, Indonesia, Israel, Iran, Kuwait, Mexico, Malaysia, Nigeria, Serbia, Singapore, Taiwan, Chile, Venezuela, Ecuador, Netherlands, Brazil, Colombia, Ghana, Iran, Denmark, Poland, Australia, Afghanistan, Bahrain, Costa Rica, Egypt, Iraq, Jordan, South Korea, Kazakhstan, Sri Lanka, Lithuania, Norway, Oman, Philippines, Poland, Qatar, Russia, Vietnam, South Africa, Nigeria, Mexico, Turkey, Hungary, Algeria, Belarus, Belgium, Bhutan, Bolivia, Bulgaria, Croatia, Czech Republic, Estonia, Finland, Greece, Italy, Japan, Libya, Romania, Thailand, Trinidad & Tobago,Tunisia, Ukraine, Yemen, Hong Kong, Gabon, China, Portugal, Switzerland, New Zealand, Sweden, Slovakia, Kenya, Lebanon, Morocco, Mongolia etc. We are sure that we also can cover the requirements requested by your company you can email us at harshsteel@ymail.com for your instant requirements.

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