Duplex S31803 Stud Bolt - High-Quality Fasteners for Industrial Applications

Duplex Steel S31803 Stud Bolts, also known as UNS S31803 or 2205, is a popular duplex stainless steel alloy. Duplex stainless steels like 31803 have a dual-phase microstructure, combining elements of both austenitic and ferritic stainless steels. Stud bolts made from Duplex Steel 31803 offer several advantages and are used in various applications. Here are some key points about Duplex Steel 31803 stud bolts:

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UNS
S31803
WNR
1.4462
ASTM
ASTM A479 / SA 479
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Corrosion Resistance: Duplex Steel 31803 is known for its excellent corrosion resistance, particularly in aggressive environments like seawater and chloride-containing solutions. This makes it suitable for applications where resistance to pitting, crevice corrosion, and stress corrosion cracking is essential.

Strength: It offers high tensile strength, making it suitable for applications that require strong stud bolts. The combination of strength and corrosion resistance is particularly valuable in industries such as oil and gas, petrochemical, and marine.

Temperature Resistance: Duplex Steel 31803 retains its mechanical properties at both low and high temperatures, which broadens its range of applications.

Weldability: It has good weldability, but care should be taken to use appropriate welding procedures to maintain its corrosion resistance. Post-weld heat treatment may also be necessary.

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Specifications of Duplex Steel S31803 Stud Bolts

Specifications	ASTM A479 / ASME SA479
Size	M02 to M160
Length	3 to 200 mm
Dimensions	DIN 975/976, ASME B18.2.1, B18.31.3, B16.5
DIN Standard	B.S. DIN 931, DIN 933, DIN 912, DIN 934, DIN 6923, DIN 603, DIN 7981, DIN 970, DIN916, DIN 7982, DIN 7985, DIN 913
UTS	NPT, UNS, UNF, UNC, UNEF, NPTF
ISO	ISO 4033, ISO 4032, ISO 7380, ISO 4017, JIS standards
Threads	ASME B1.1 2A/3A – 2B/3B Inch Unified Threads and B1.13M 6h-6G Metric Coarse Threads
Type	Cold Forged, Hot Forged, Bar Stock Machined, Bar Stock Milling

Applications: Stud bolts made from Duplex Steel 31803 are used in various industries and applications, including:

Oil and Gas: They are commonly used in offshore platforms, pipelines, and equipment due to their resistance to corrosion and high-strength properties.

Petrochemical: Stud bolts in 31803 are used in chemical processing plants and refineries where exposure to corrosive chemicals is a concern.

Marine: Due to its corrosion resistance, it is widely used in marine applications, including shipbuilding and offshore structures.

Construction: Duplex Steel 31803 stud bolts can also be used in construction projects, especially in areas exposed to harsh weather conditions.

Duplex Steel 31803, also known as UNS S31803 or 2205, is a popular duplex stainless steel alloy. Duplex stainless steels like 31803 have a dual-phase microstructure, combining elements of both austenitic and ferritic stainless steels. Stud bolts made from Duplex Steel 31803 offer several advantages and are used in various applications. Here are some key points about Duplex Steel 31803 stud bolts:

Temperature Resistance: Duplex Steel 31803 retains its mechanical properties at both low and high temperatures, which broadens its range of applications.

Weldability: It has good weldability, but care should be taken to use appropriate welding procedures to maintain its corrosion resistance. Post-weld heat treatment may also be necessary.

Applications: Stud bolts made from Duplex Steel 31803 are used in various industries and applications, including:

Oil and Gas: They are commonly used in offshore platforms, pipelines, and equipment due to their resistance to corrosion and high-strength properties.

Petrochemical: Stud bolts in 31803 are used in chemical processing plants and refineries where exposure to corrosive chemicals is a concern.

Marine: Due to its corrosion resistance, it is widely used in marine applications, including shipbuilding and offshore structures.

Construction: Duplex Steel 31803 stud bolts can also be used in construction projects, especially in areas exposed to harsh weather conditions.

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Equivalent Grades Of Duplex Steel S31803 Stud Bolts

STANDARD	UNS	WERKSTOFF NR.
ASTM A479 F51	S31803	1.4462

Chemical Composition of Duplex Steel S31803 Stud Bolts

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	N	Fe
S31803	0.030 max	2.00 max	1.00 max	0.030 max	0.020 max	22.0 – 23.0	3.0 – 3.5	4.50 – 6.50	0.14 – 0.20	63.72 min

Mechanical Properties of DSS UNS S31803 Stud Bolts

Grade	Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
S31803	7.8 g/cm3	1350 °C (2460 °F)	Psi – 116000 , MPa – 800	Psi – 80000 , MPa – 550	15 %

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Types of Duplex Steel S31803 Stud Bolts

Duplex S31803 Double Ended Threaded Studs

Duplex Steel S31803 Tie Rods

DSS S31803 Threaded Rod

S31803 Duplex Steel Tap End Stud Bolt

Duplex Steel S31803 Fully Threaded Stud Bolts