ASTM A213 TP304H Stainless Steel Heat Exchanger Tube

GNEE Steel is a renowned manufacturer, supplier, distributor, and exporter of ASTM A213 TP304H stainless steel seamless tubes.

The ASTM A213 304H stainless steel seamless tubes we supply are among the most widely used austenitic stainless steels; also known as WNR 1.4306 seamless tubes, this material maintains enhanced strength in high-temperature environments-up to 1500°F-through the precise control of its carbon chemical composition. ASTM A213 SS 304H tubing features a higher carbon content, making this steel grade particularly suitable for applications involving high-temperature environments.

Furthermore, ASTM A213 304H seamless condenser tubes exhibit excellent weldability and deep-drawing properties, while their overall corrosion resistance is comparable to that of the low-carbon 304/304L stainless steel grades. We can supply ASTM A213 SS 304H square tubes in various sizes, grades, and wall thicknesses to meet our customers' specific customization requirements. ASTM A213 304H cold-drawn stainless steel tubes and ASTM A213 304H stainless steel heat exchanger tubes are widely utilized across a diverse range of fields and industries, including food and beverage processing, petrochemicals, and construction engineering.

 

ASTM A213 TP304H Stainless Steel Tube Specification

Specification	ASTM A-213 & Its equivalent ASME, DIN & EN Standard.
Grades	304, 304L, 304H, 304LN, 309S, 310S, 316, 316L, 316H, 316Ti
Type	Seamless Ferritic and Austenitic Boiler, Superheater, and Heat-Exchanger Tubes
Outer Diameter Size	1/4" OD, NB to 3" OD, NB sizes
Thickness	1mm to 12mm, SCH 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S as per ANSI B36.19/36.10
Length	Up to 6 meters, custom cut lengths
Ends	No.1 Pickled Finish, No.4 finish, BA Finish, Electropolished Seamless Tubes
Delivery Conditions	As Rolled, Formed, Stress Relieved, Annealed, Hardened, Tempered, Cold Draw
Coating	Electropolish, Mechanical Polish, Satin Finish, Passivated

 

Chemistry Composition of ASTM A213 ASME SA-213 TP304H

C, %	Si, %	Mn, %	P, %	S, %	Cr, %	Ni, %
0.04-0.10	1.00 max	2.00 max	0.045 max	0.030 max	18.0-20.0	8.0-11.0

 

 

Mechanical Properties of ASTM A213 ASME SA-213 TP304H

Tensile Strength , MPa	Yield Strength, MPa	Elongation, %	Hardness, HB
515 min	205 min	35 min	192 max

 

 

 

ASTM A213 SS 304H Tube Tolerances

Specification	Allowable Outside Diameter Variation in mm			Allowable Wall Thickness Variation		Exact Length Tolerance in mm		Testing
	Nominal Diameter	Over	Under	%Over	%Under	Over	Under
ASTM-A213 TP304H Seamless Boiler Superheater and Heat Exchanger Tubes	Under 25.4	.1016	.1016	+20	-0	3.175	0	Flattening Test
	25.4-38.1 incl	.1524	.1524	+22	-0	3.175	0	Tension Test
	38.1-50.8 excl	.2032	.2032	+22	-0	3.176	0	Flare Test
	50.8-63.5 excl	.254	.254	+2	-0	4.46	0	Hardness Test
	63.5-76.2 excl	.304H8	.304H8	+22	-0	4.76	0	100% Hydrostatic test
	76.2-101.6 incl	.381	.381	+22	-0	4.76	0	Refer to ASTM A-450

 

ASTM A213 ASME SA-213 TP304H welding material selection

For welding ASTM A213/ASME SA-213 TP304H (UNS S30409) stainless steel, commonly used in high-temperature superheaters, the recommended filler materials are ER308H for gas tungsten arc welding (TIG) and E308H-15/16 for shielded metal arc welding (SMAW). These filler metals provide high-temperature creep strength and oxidation resistance, matching the 304H base material.

 

Application of ASME SA-213 TP304H Stainless Steel Tubes

ASME SA-213 TP304H is a high-carbon austenitic stainless steel tube designed for high-temperature service, featuring superior creep strength. It is primarily used for boiler superheaters, reheaters, heat exchangers, and pressure piping in subcritical and supercritical power generation plants.

 

Inspection & Test:
Chemistry composition,
Tensile test,
Hardeness test,
Flattening test,
Flaring test,
NDT,
Surface inspection and dimension check.

 

Packaging and Marking:
The products shall be packaged in bundles or plywood crates, wrapped in plastic, and provided with appropriate protective measures to ensure seaworthy transport, or packaged in accordance with specific requirements.
Markings shall indicate whether the tubing is hot-worked or cold-worked, and shall include-but not be limited to-the following information: standard, grade, dimensions, heat number, and batch number.