products details

Home > Products >

Heat Exchanger Tube

ASME SA789 S31803 Duplex Stainless Steel Heat Exchanger Tube

All Category

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Nickel Alloy Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Carbon Steel Boiler Tube

Sales Dept. (Marketing Director)

sales@steelseamlesspipe.com

+8613819835483

Contact Now

ASME SA789 S31803 Duplex Stainless Steel Heat Exchanger Tube

Brand Name:	YUHONG
Model Number:	Seamless Tube
MOQ:	1 PC
Price:	1 - 10000 USD
Packaging Details:	Ply-Wooden Case & Woven Bag
Payment Terms:	L/C, T/T

Detail Information

Product Description

Detail Information

Place of Origin:

China , Korea

Certification:

ABS, DNV-GL, LR, BV, CCS, KR, ASME, TUV, SGS, BV, IEI, IBR, ISO9001, ISO 14001, ISO 18001

Material:

S31803

Standard:

ASME SA789

Ends:

PE , BE

Testing:

HT , ET

Size:

1/2 Inch - 98 Inch

Application:

Heat Exchanger

Supply Ability:

10000 Tons/Month

Highlight:

ASME SA789 Stainless Steel Heat Exchanger Tube

S31803 Stainless Steel Heat Exchanger Tube

finned pipe heat exchanger 620MPa

Product Description

ASME SA789 S31803 Duplex Stainless Steel Heat Exchanger Tube

Product Specifications

Attribute	Value
Material	S31803
Standard	ASME SA789
Ends	PE, BE
Testing	HT, ET
Size	1/2 inch - 98 inch
Application	Heat Exchanger

Product Description

Grade S31803 is a duplex stainless steel featuring a mixed microstructure of austenite and ferrite phases, typically in a 50/50 ratio. This unique composition provides superior strength and enhanced resistance to stress corrosion cracking compared to standard austenitic stainless steels. S31803 is renowned for its exceptional performance in highly corrosive environments, particularly those containing chlorides and other aggressive chemicals.

Chemical Composition

Grade	C	Mn	Si	P	S	Cr	Ni	Mo	N	Fe
S31803	≤ 0.03%	≤ 2.00%	≤ 1.00%	≤ 0.03%	≤ 0.02%	21.00-23.00%	4.50-6.50%	2.50-3.50%	0.08-0.20%	Balance

Mechanical Properties

Grade	Tensile Strength	Yield Strength	Elongation	Hardness
S31803	Minimum 620 MPa (90,000 psi)	Minimum 450 MPa (65,000 psi)	25% minimum in 50 mm	≤ 290 HB (Brinell Hardness)

Key Features

High Strength: Approximately twice the yield strength of austenitic stainless steels
Corrosion Resistance: Excellent resistance to pitting, crevice corrosion, and stress corrosion cracking, especially in chloride environments
Weldability: Good weldability with proper technique and post-weld treatment
Durability: High mechanical strength and toughness, even at low temperatures

Applications

Chemical Processing Industry:

Heat exchangers where aggressive chemicals are processed, ensuring high performance and longevity
Reactors and pressure vessels dealing with highly corrosive substances
Piping systems that transport aggressive chemicals at high pressures and temperatures

Oil and Gas Industry:

Offshore oil rigs and platforms where exposure to seawater and corrosive environments is common
Subsea equipment due to its excellent resistance to stress corrosion cracking and pitting
Components in refineries that process sour gas and other corrosive substances

Marine Applications:

Shipbuilding in marine environments where components are exposed to seawater
Seawater cooling systems due to its high resistance to chloride-induced corrosion
Desalination plant tubing where high resistance to pitting and crevice corrosion is necessary

Tags:

Studded Tube

Solid Fin Tube

Serrated Finned Tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

Studded Tube

Solid Fin Tube

Serrated Finned Tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube

Copper Alloy Steel Heat Exchanger Tube

Titanium Alloy Steel Heat Exchanger Tube

Alloy Steel Heat Exchanger Tube

U Bend Heat Exchanger Tube

Carbon Steel Heat Exchanger Tubes

Boiler Tube

Nickel Alloy Steel Boiler Tube

Stainless Steel Boiler Tube

Duplex Stainless Steel Boiler Tube

Alloy Steel Boiler Tube

Carbon Steel Boiler Tube

Fired Heater Parts

Baffle Plate

Tubesheet

products details

Studded Tube

Solid Fin Tube

Serrated Finned Tube

Embedded G Fin Tube

Extruded Fin Tube

Wound Fin Tube

Low Fin Tube

Square Fin Tube

Longitudinal Finned Tube

Enhanced Heat Transfer Tube

Fin Tube Support

Return Bend

Heat Exchanger Tube

Stainless Steel Heat Exchanger Tube

Duplex Stainless Steel Heat Exchanger Tube

Super Duplex Stainless Steel Heat Exchanger Tube

Nickel Alloy Steel Heat Exchanger Tube