Name: ASTM A789 S32205 Duplex Stainless Steel Tube for Heat Exchanger Tube Bundles
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A789 S32205 Duplex Stainless Steel Tube
Price: 1000000 USD
Availability: InStock

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ASTM A789 S32205 Duplex Stainless Steel Tube for Heat Exchanger Tube Bundles

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 S32205 Duplex Stainless Steel Tube

Payment & Shipping Terms:

Minimum Order Quantity:	500KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case
Delivery Time:	Depends on quantity
Payment Terms:	T/T,L/C
Supply Ability:	800 Tons/ Month

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Detailed Product Description

Highlight:

ASTM A789 S32205 duplex stainless steel tube

S32205 duplex tube for heat exchanger

duplex stainless steel heat exchanger tube bundles

Overview

Yuhong Group Co., Ltd. supplies heat exchangers, pressure vessels, air coolers, tube bundles, U-tubes, heat exchanger tubes, finned tubes, tubesheets, baffles, and heads. This page focuses on ASTM A789 S32205 tube for heat exchanger and pressure equipment service.

Under ASTM A789/A789M, S32205 is a ferritic/austenitic stainless steel tube grade supplied in average wall thickness, or minimum wall thickness when specified on the order. Tubes are made by the seamless or welded process with no filler metal added. The grade is selected for services requiring general corrosion resistance, with particular emphasis on resistance to stress corrosion cracking. A789/A789M also notes that these steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures.

Common search terms include ASTM A789 S32205 tube, duplex stainless steel heat exchanger tube, S32205 U-bend tube, and ASTM A789 tube bundle.

Working Parameters and Material Comparison

Table 1. Chemical Composition of S32205, %

Element	S32205
C	0.030 max
Mn	2.00 max
P	0.030 max
S	0.020 max
Si	1.00 max
Ni	4.5–6.5
Cr	22.0–23.0
Mo	3.0–3.5
N	0.14–0.20

Table 2. Heat Treatment and Mechanical Properties of S32205

Item	S32205
Heat treatment	1020–1080°C [1870–1975°F]
Quench	Rapid cooling in water or by other means
Tensile strength, min	94 ksi [650 MPa]
Yield strength, min	65 ksi [450 MPa]
Elongation in 2 in. or 50 mm, min	30%
Hardness, max	290 HBW / 30 HRC / 290 HV
Manufacture	Seamless or welded, no filler metal added
Testing	Each tube: hydrostatic or nondestructive electric test, unless otherwise specified

Table 3. S32205 vs S31803 within A789/A789M

Property	S32205	S31803
Cr, %	22.0–23.0	21.0–23.0
Mo, %	3.0–3.5	2.5–3.5
N, %	0.14–0.20	0.08–0.20
Tensile strength, min	94 ksi [650 MPa]	90 ksi [620 MPa]
Yield strength, min	65 ksi [450 MPa]	65 ksi [450 MPa]
Elongation, min	30%	25%
Hardness, max	290 HBW / 30 HRC / 290 HV	290 HBW / 30 HRC / 290 HV

This comparison helps buyers specify S32205 when higher Cr, Mo, and N ranges and higher minimum tensile and elongation are required by the A789/A789M tables. It is not a cross-standard equivalence.

Application & Compliance

Compliance: ASTM A789/A789M.

In shell-and-tube heat exchangers, air coolers, and pressure vessel tube bundles, ASTM A789 S32205 tube can be used for straight tubes, U-tubes, finned tubes, and replacement tube bundles. The Cr-Mo-N chemistry and A789/A789M heat treatment support general corrosion resistance and stress corrosion cracking resistance in process-side and cooling-water services where SCC is a selection concern. Each tube is subjected to hydrostatic or nondestructive electric testing, which helps screen tube integrity before bundle assembly. For high-temperature projects, review the A789/A789M warning on prolonged elevated-temperature embrittlement.

Typical Application Scenarios

Heat exchanger tubes and tube bundles
U-tube heat exchangers
Air cooler tubes
Finned tubes for process plants
Replacement tubes for pressure equipment and heat transfer service

FAQ

Q: Is ASTM A789 S32205 tube seamless or welded?

A: A789/A789M covers both seamless and welded tube. Welded tube is made with no filler metal added.

Q: What heat treatment does A789/A789M require for S32205?

A: 1020–1080°C [1870–1975°F], followed by rapid cooling in water or by other means.

Q: Can S32205 be used in prolonged elevated-temperature service?

A: A789/A789M states these steels are susceptible to embrittlement if used for prolonged periods at elevated temperatures. Review actual operating conditions before selection.