ASTM B473 Washers, ASME SB473 Washers, Alloy 20 Washers Supplier, Manufacturer and Exporter in India
Din 2.4660 Alloy 20 Washers, UNS N08020 Washers, Alloy 20 Washers, Alloy 20 Washers Suppliers in India.
GENERAL PROPERTIES
Alloy 20 (UNS N08020) is an austenitic, nickel-iron-chromium based super alloy with additions of Copper and Molybdenum which provide resistance to hostile environments, pitting, and crevice corrosion. It is also stabilized with Columbium to minimize carbide precipitation during welding. Alloy 20 appears to fall between both the stainless and nickel categories as it contains characteristics of both. It was designed for maximum resistance to acid attack and demonstrates superior resistance to stress-corrosion cracking in boiling 20% to 40% sulfuric acid, and also has excellent general corrosion resistance to sulfuric acid and to chloride stress corrosion cracking. Alloy 20 has good mechanical properties at both ambient and elevated temperatures, up to approximately 930°F (500°C) and is readily fabricated by usual industrial processes.
APPLICATIONS
Alloy 20 was originally designed for use in sulfuric acid related applications; however, it is now frequently used in a wide variety of industries. Applications that commonly use Alloy 20 include:
- Chemical and allied industries
- Food and dye production
- Heat exchangers
- Explosives
- Tanks
- Valves
- Pickling racks
- Manufacture of synthetic rubber and plastics
- Pharmaceuticals
- SO2 scrubbers and other severe environments
CORROSION RESISTANCE
- Excellent resistance to general corrosion, pitting, and crevice corrosion in chemicals containing chlorides and sulfuric, phosphoric, and nitric acids.
- Nickel content aids in chloride ion stress and corrosion resistance.
- Additions of Copper and Molybdenum provide resistance to hostile environments, pitting, and crevice corrosion.
- Chromium adds to its resistance of oxidizing environments such as nitric acids.
- Columbium reduces the effects of carbide precipitation.
WELDABILITY
- All commonly used welding methods, with the exception of oxyacetylene, can be successfully used.
- The presence of Columbium tends to minimize the precipitation of carbides in the heat-affected zone, so the material may be used in the as-welded condition in most cases.
- Pre-heating is not required.
HEAT TREAMENT
- Cannot be hardened by heat treatment.
- Stabilized-annealing is done at 1750-1850°F, followed by water quenching.
- Stress relieving can be performed on annealed material up to 950°F.
PROCESSING - HOT FORMING
- Heat uniformly to a starting temperature of 2100-2225°F. Finish forging before the stock drops below 1800°F.
- In order to stabilize the material after hot working operations, reheat at 1750-1850°F for a minimum of 1/2-hour per one inch of thickness and water quench.
PROCESSING - COLD FORMING
- Alloy 20 has good cold formability. Bending, drawing and pressing, and other forming operations that occur in the production of fabricated items are readily performed.
- Alloy 20 can normally be press brake bent over a radius twice the materials thickness.
- After cold reductions of more than 15%, a final stabilizing annealing is often required.
MACHINABILITY
Because of Alloy 20′s high work-hardening rate the following are required:
- Only low surface-cutting speeds are possible compared with low-alloy standard austenitic stainless steel.
- Tools should be engaged at all times.
- Heavy feeds are important in getting below the work-hardened 'skin'.
CHEMICAL PROPERTIES:
TYPE | C | Cr | Cu | Fe | Mn | Mo | Ni | P | Si | S | Nb (Cb) |
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Alloy 20 UNS N08020 |
0.07 max |
min: 19.00 max: 21.00 |
min: 3.00 max: 4.00 |
Balance | 2.00 max |
min: 2.00 max: 3.00 |
min: 32.00 max: 38.00 |
0.045 max |
1.00 max |
0.035 max |
8 XC min 1.00 max |
MECHANICAL PROPERTIES:
Stabilized-Annealed Condition | ||||||
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Product Form | Tensile Strength, ksi (min) |
Yield Strength, 0.2% offset ksi (min) |
Elongation % (min) | Reduction of Area % (min) |
Hardness Brinell (max) |
Hardness Rockwell B (max) |
Plate, Sheet | 80 | 35 | 30 | — | 217 | 95 |
Bar | 80 | 35 | 30 | 50 | — | — |
PHYSICAL PROPERTIES:
Density | Specific Gravity | Specific Heat at 32 to 212°F |
Electrical Resistivity at 68°F |
Poissons Ratio | Magnetic Permeability at 68°F |
Modulus of Elasticity at 68°F |
---|---|---|---|---|---|---|
0.292 lbs/in3 | 8.08 | 0.12 BTU/lb/°F | 644 ohm-cir mil/ft | 0.31 | 1.002 Mu | 29.3 x 106 psi |
Cold Drawn Stainless steel Wire Round Bars Application : Machined Components, Pump Shafts, Valves, Fasteners, Machine Tools, Dairy Equipments, Surgical & Medical Parts, Threaded Bars, Studs, Bolts, Pins, Hinges and Handles.
Peeled Turned Polished Stainless Steel Round Bars and Stainless steel forged Bars
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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, B18.6.4MACHINE, 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 |
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Grade | Common Name | Related Specification | |||
British | European | ASTM | UNS | ||
Grade1 | 3.7025 | B348 | R50250 | ||
Grade2 | 3.7035 | B348 | R50400 | ||
Grade3 | 3.7055 | B348 | R50550 | ||
Grade5 | 3.7165 | B345 | R56400 | ||
Grade7 | 3.7235 | B348 | R52400 | ||
Grade11 | 3.2250 | B348 | R52250 |
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.
Duplex |
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Alloy | Common Name | Related Specifications | ||
European | UNS | ASTM/ASME | ||
Alloy 2205 | SAF 2205 ® | 1.4462 | S32205 | F60 |
31803 | 31803 | 1.4462 | S31803 | F51 |
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.
Super Duplex | ||||
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Alloy | Common Name | Related Specification | ||
European | UNS | ASTM/ASME | ||
Alloy 255 | Ferralium 255 ® | 1.4507 | S32550 | F61 |
Zeron 100 | Zeron 100 ® | 1.4501 | S32760 | F55 |
Alloy 2507 | SAF 2507 ® | 1.4410 | S32750 | F53 |
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.
Stainless Steels / Others |
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Grade | Related Specification | |||
British | European | ASTM | UNS | |
304/304L | BS 970 | 1.4301/1.4306 | A193 B8, A320 B8 | S 30400 / S30403 |
310 | BS 970 | 1.4841 | A479 | S 31000 S 31008 |
310S | BS 970 | 1.4845 | S 31008 | |
316/316L | BS 970 | 1.4401 | A193 B8M, A320 B8M | S 31600 / S31603 |
317/317L | BS 970 | 1.4449/1.4438 | S 31700 / S31703 | |
321 | BS 970 | 1.4541 | A193 B8T | S 32100 |
347 | BS 970 | 1.4550 | A193 B8C, A320 B8C | S 34700 |
410 | BS 970 | 1.4006 | S 41000 | |
431 | BS 970 | 1.4057 | S 43100 | |
174PH | 1.4562 | S 14700 | ||
660 A/B/C/D | 1.4980 | A453 | K 66286 | |
254 SMO ® | 1.4547 | S 31254 | ||
C63000 | B150 | C63000 | ||
904L | 1.4539 | N08904 | ||
Zirconium 702 | R60702 | |||
Zirconium 705 | R60705 |
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.
High Nickel Alloys |
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Alloy | Common Name | Related Specification | |||
British | European | ASTM | UNS | ||
Alloy 600 | Inconel 600 ® | BS 3076 NA 14 | 2.4816 | B166 | N06600 |
Alloy 601 | Inconel 601 ® | 2.4627 | B166 | N06601 | |
Alloy 625 | Inconel 625 ® | BS 3076 NA 21 | 2.4856 | B446 | N06625 |
Alloy 718 | Inconel 718 ® | 1.4668 | B637 | N07718 | |
Alloy 750 | Inconel 750 ® | 2.4669 | B637 | N07750 | |
Alloy 400 | Monel 400 ® | BS 3076 NA13 | 2.4360 | F467 | N04400 |
Alloy K500 | Monel K500 ® | BS 3076 NA18 | 4.4375 | B865-04 | N05500 |
Alloy C276 | Hastelloy C276 ® | 2.4819 | B574 | N10276 | |
Alloy 22 | Hastelloy C22 ® | 2.4602 | B574 | N06022 | |
Alloy B2 | Hastelloy B2 ® | B335 | N10665 | ||
Alloy X | Hastelloy X ® | 2.4655 | B572 | N06002 | |
Alloy B3 | Hastelloy B3 ® | 2.4600 | B335 | N10675 | |
Alloy G30 | Hastelloy G30 ® | 2.4603 | B581 | N06030 | |
Alloy 50 | Nitronic 50 ® | A479 XM-19 | S20910 | ||
Alloy 60 | Nitronic 60 ® | A193 B8S | S21800 | ||
Alloy 75 | Nimonic 75 ® | 2.4951 | B637 | N06075 | |
Alloy 80A | Nimonic 80A ® | BS 4882 NA20 | 2.4952 | B637 | N07080 |
Alloy 90 | Nimonic 90 ® | B408 | N07090 | ||
Alloy 800 | Incoloy 800 ® | BS 3076 NA15 | 1.4876 | B408 | N08800 |
Alloy 800H | Incoloy 800H ® | B408 | |||
Alloy 800 HT | Incoloy 800HT ® | 1.4959 | B408 | N08811 | |
Alloy 825 | Incoloy 825 ® | BS 3076 NA16 | 2.4858 | B425 | N08825 |
Alloy 925 | Incoloy 925 ® | B805 | N09925 | ||
Alloy DS | Incoloy DS ® | BS 3076 NA17 | 1.4862 | N08330 |
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 & nuts 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
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Form
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We export our ALLOY 20 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.