ASTM A269 TP304 Stainless Steel Seamless Tube for Heat Exchanger

What is the ASTM A269 Standard?

The ASTM A269 specification applies to seamless and welded austenitic stainless steel tubes for general service applications. This specification covers nominal wall thickness schedules and is designed for stainless steel tubes used in general corrosion resistance, low-temperature, and high-temperature environments.

The ASTM A269 TP304L seamless stainless steel heat exchanger tubes supplied by GNEE are specialized austenitic stainless steel tubes meticulously manufactured in strict compliance with the ASTM A269 standard. They are engineered specifically for high-performance heat exchanger applications operating in chemically corrosive or high-temperature environments. As part of the 300-series stainless steel family, these tubes play a critical role in heat exchanger systems across industries such as power generation, chemical processing, and HVAC (Heating, Ventilation, and Air Conditioning).

According to this specification, ASTM A269 Grade TP304 tubes are typically supplied in sizes and thicknesses with inner diameters smaller than 1/4 inch (6.4 mm), or with nominal wall thicknesses either below 0.020 inch (0.51 mm) or above 0.020 inch (0.51 mm), catering to diverse application requirements.

A269 TP304 Seamless Round Stainless Steel Tube specification

Outside Diameter		3.2-25.4mm
Wall Thickness		0.2-2.5mm
Length		As customer's requirement; In coil or in straight.
Standard		ASTM A213/ ASME SA213, ASTM A269/ASME SA269, EN10216-5, etc.
Grade		TP304, TP304L, TP316, TP316L, TP321, TP247H, etc.
Delivery Condition		Pickled, Polished, Bright Annealed
Technique		Seamless/Welded
Application		Automotive industry, Aircraft/Aerospace, Instrumentation & Electrical, Chemical Industry, etc.
Marking		LOGO, Standard, Grade, Size, Heat Number.
Package		Woven bag, wooden cases, or as per customer's requirement.
Quality Requirement		Mill Test Certificate (EN 10204/3.1); Third Part Inspection is acceptable.

Chemical Composition (%)

Element	C	Si	Mn	P	S	Cr	Ni	N
Range	≤ 0.08	≤ 0.75	≤ 2.00	≤ 0.045	≤ 0.030	18.0-20.0	8.0-11.0	≤ 0.10

Mechanical Properties (Annealed Condition)

Tensile Strength	Yield Strength (0.2% Offset)	Elongation (% in 2 inch)	Hardness (Max)
≥ 515 MPa	≥ 205 MPa	≥ 35%	192 HB

Equivalent Material of TP304

ASTM/AISI	UNS NO	EN	ISO	JIS	GOST
TP304	S30400	1.4301	X5CrNi18-10	SUS304	08X18H10

Application

ASTM A269 TP304/304L seamless tubes are widely used in heat exchanger systems across various industries, including chemical processing (for handling corrosive fluids such as acids and alkalis), power generation (in steam generators and waste heat boilers), HVAC systems, and marine engineering (for seawater heat exchangers).

For urgent needs, the biggest advantage is that most common AISI 304 pipe sizes are in stock in our Chinese warehouses. GNEE can quickly deliver material to the Middle East and MENA countries, offering distributor pricing for bulk orders. Based on export volume over the past 10 years, GNEE ranks among the top ten exporters of SS 304 pipe in China. We exclusively supply material that meets the EN 10204 Type 3.1 MTC standard.
At GNEE, buyers of UNS S30400 pipe can compare sizes, datasheets, and price lists from reputable 304 stainless steel pipe manufacturers in China and Europe. Get a free quote now! Mail:es@gescosteel.com

A269 TP304 Seamless Round Stainless Steel Tube

Knowledge

What is the ASTM A269 Standard?

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