Stainless Steel 304H Washers, UNS S30409 Washers Supplier & Exporter

GENERAL PROPERTIES

Alloy 304 is a T-300 series stainless steel austenitic, which has a minimum of 18% chromium and 8% nickel with a maximum of 0.08% carbon. It is the standard "18/8 stainless" that is commonly found in pans and cooking tools. Alloy 304 is the most versatile and widely used alloy in the stainless steel family. It may be used for a wide variety of home and commercial applications and exhibits excellent corrosion resistance, has a high ease of fabrication, outstanding formability, and tremendous strength. The austenitic stainless steels are also considered to be the most weldable of the high-alloy steels and can be welded by all fusion and resistance welding processes. Due to its controlled carbon content of 0.04 to 0.10, Alloy 304H provides improved high temperature strength when exposed to temperatures above 800oF. Alloy 304H also has greater short term and long term creep strength than Alloy 304L at temperatures above 500oC and is more resistant to sensitization than Alloy 304L.

APPLICATIONS

Alloy 304H is often used as a material of construction up to about 1500oF. Some examples of applications that Alloy 304H is commonly used for includes:

• Most commonly used in petroleum refineries
• Boilers
• Heat exchangers
• Condensers
• Pipelines
• Cooling towers
• Steam exhausts
• Electric generation plants
• On occasion will be found in fertilizer and chemical plants

HEAT RESISTANCE

• Good oxidation resistance in intermittent service to 870O C and in continuous service to 920O C
• Continuous use of Alloy 304 in the 425-860°C range is not recommended if subsequent aqueous corrosion resistance is important
• Alloy 304H has higher strength at elevated temperatures so is often used for structural and pressure-containing applications at temperatures above about 500°C and up to about 800°C
• Alloy 304H will become sensitized in the temperature range of 425-860°C; this is not a problem for high temperature applications, but will result in reduced aqueous corrosion resistance.

CORROSION RESISTANCE

• Resistance to corrosion in oxidizing environments is a result from the 18 to 19% chromium that the 304 alloys contain
• Resistance to moderately aggressive organic acids is a result from the 9 to 11% nickel that the 304 alloys contain
• At times, Alloy 304L may show a lower corrosion rate than the higher carbon Alloy 304; otherwise, the 304, 304L, and 304H alloys may be considered to perform uniformly in most corrosive environments.

WELDING CHARACTERISTICS

• Readily welded by most standard processes.
• May be necessary to anneal the plate after welding
• Annealing helps restore corrosion resistance lost by the sensitization.

PROCESSING - HOT FORMING

• Working tempertarues of 1652-2102 degrees F are recommended
• Material should be annealed at 1900 degrees F
• Material should be water quenched or or rapidly cooled

PROCESSING - COLD FORMING

• Alloy is quite ductile and forms easily
• Helps increase strength and hardness of alloy
• May leave alloy slightly magnetic

MACHINABILITY

• Subject to work hardening during deformation
• Subject to chip breaking
• Best results achieved through slower speed, heavier feeds, good lubrication, and sharp tooling

CHEMICAL PROPERTIES:

%	Cr	Ni	C	Si	Mn	P	S	N
304H	min: 18.0 max:20.0	min: 8.0 max: 10.5	min: 0.04 max:0.10	0.75 max	2.0 max	0.45 max	0.03 max	0.10 max

MECHANICAL PROPERTIES:

Grade	Tensile Strength ksi (min.)	Yield Strength 0.2% Offset ksi (min.)	Elongation - % in 50 mm (min.)	Hardness (Brinell) MAX	Hardness (Rockwell B) MAX
304H	75	30	40	201	92

PHYSICAL PROPERTIES:

Denstiy lbm/in3	Coefficient of Thermal Expansion (min/in)-°F		Thermal Conductivity BTU/hr-ft-°F		Specific Heat BTU/lbm -°F	Modules of Elasticity (annealed)2-psi
at 68 °F	at 68 – 212°F	at 68 – 1600°F	at 212°F	at 932°F	at 32 – 212°F	in tension (E)
0.285	9.2	11.0	9.4	12.4	0.12	29 x 106

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
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
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
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
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
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:

• 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
• Nuts : 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 STAINLESS STEEL 304H 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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