Name: ASTM A789 UNS S31803 Duplex Stainless Steel Seamless Tube For Chemical Process Plant
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A789 UNS S31803
Price: 120000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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Home Products Duplex Stainless Steel Tube

ASTM A789 UNS S31803 Duplex Stainless Steel Seamless Tube For Chemical Process Plant

Product Details:

Place of Origin:	China
Brand Name:	Yuhong
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	ASTM A789 UNS S31803

Payment & Shipping Terms:

Minimum Order Quantity:	100 kgs
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap etc.
Delivery Time:	20 days
Payment Terms:	L/C, T/T

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Detailed Product Description

Standard:	ASTM A789	Grade:	UNS S31803
Seamless Pipe & Tube Size:	1/2”to 8"	Outer Diameter:	6.0- 630 Mm
Schedules:	10s, 20, 40s, 40, 60, 80s, 80, 100, 120, 140, 160, XXH	NDT Test:	HT/UT/ET
Application:	Boilers, Superheaters And Heat Exchangers	High Light:	UNS S31803
Highlight:	Boilers Duplex Stainless Steel Tube , Duplex Stainless Steel Tube ASTM A789 , UNS S31803 Duplex Stainless Steel Pipe

ASTM A789 UNS S31803 Duplex Stainless Steel Seamless Tube For Chemical Process Plant

ASME SA789 S31803 stainless steel tubing provides better pitting and crevice corrosion resistance than 316L or 317L austenitic stainless steel in almost all corrosive media. It also has high corrosion and erosion fatigue properties, as well as lower thermal expansion rates and higher thermal conductivity compared to austenitic stainless steels. The advantage of a duplex structure is that it combines the advantages of ferritic alloys, stress corrosion resistance, crack resistance, and high strength with the ease of manufacture and corrosion resistance of austenitic alloys.

Chemical Composition

Grade	C max	Si max	Mn max	P max	S max	Cr	Ni	Mo	N
UNS S32750	0.030	0.8	1.2	0.030	0.015	24.0-26.0	6.0-8.0	3.0-5.0	0.24-0.32
UNS S31803	0.030	1.0	2.0	0.020	0.020	21.0-23.0	4.5-6.5	2.5-3.5	0.08-0.20
UNS S31500	0.030	1.0	1.2-2.0	0.030	0.030	18.0-19.0	4.5-5.5	2.5-3.5	0.05-0.10

Physical Properties

Grade	Y.S.MPa min	T.S.Mpa min	Elongation %	Hardness HRC
UNS S32750	550	800	15	20
UNS S31803	450	620	25	20
UNS S31500	440	630	30	20

Heat Treatment Requirements

UNS Designation	Temperature	Quench
S31803	1870-2010 °F [1020-1100°C]	Rapid cooling in air or water
S32205	1870-2010 °F [1020-1100°C]	Rapid cooling in air or water
S31500	1800-1900 °F [980-1040°C]	Rapid cooling in air or water
S32550	1900 °F [1040°C] min.	Rapid cooling in air or water
S31200	1920-2010 °F [1050-1100°C]	Rapid cooling in water
S31260	1870-2010 °F [1020-1100°C]	Rapid cooling in water
S32001	1800-1950 °F [982-1066°C]	Rapid cooling in air or water
S32304	1700-1920 °F [925-1050°C]	Rapid cooling in air or water
S32750	1880-2060 °F [1025-1125°C]	Rapid cooling in air or water
S32760	2010-2085 °F [1100-1140°C]	Rapid cooling in air or water
S32950	1820-1880 °F [990-1025°C]	Rapid cooling in water
S32520	1975-2050 °F [1080-1120°C]	Rapid cooling in air or water

Duplex Stainless Steel Pipe Application

Chemical processing
Transport and Storage
Oil and gas exploration and offshore rigs
Oil and gas refining
Marine environments
Pollution control equipment
Pulp and paper manufacturing
Chemical process Plant

S31803 Tubes Ordering Information

Orders for product under this specification should in- clude the following, as required, to describe the desired material adequately:

Quantity (feet, metres, or number of lengths)
Name of product (seamless or welded tubes)
Grade
Size (outside diameter and average wall thickness, unless minimum wall thickness is specified)
Length (specific or random)
Special requirements

ASTM A789 UNS S31803 Duplex Stainless Steel Seamless Tube For Chemical Process Plant 0