ASME SA268 TP430 Stainless Steel Seamless Heat Exchanger Tube

What is SA 268 TP 430 Heat Exchanger Tube?

​​ASME SA268 TP430 stainless steel seamless heat exchanger tubes are ferritic stainless steel tubes that comply with the ASME SA268 specification (specifically the TP430 grade). Although categorized under ASME SA268, the SA 268 TP430 material is actually a martensitic stainless steel.

 

SA268 TP430 stainless steel tubes are among the most widely used hardenable ferritic stainless steels. With a chromium content of approximately 16% in its composition, it enhances corrosion resistance. These tubes also exhibit good heat resistance and oxidation resistance, maintaining favorable mechanical properties even at temperatures up to 816°C.​​

 

​​ASME SA268 TP430 stainless steel boiler tubes are designed for general-purpose applications. They are commonly used in high-temperature heat exchangers and other applications requiring both good mechanical properties and corrosion resistance, such as in the petroleum, natural gas, and chemical industries.​

 

 

ASME SA268 TP430 Stainless Steel Seamless Tube Specification:

Standard	ASTM A268 & Its equivalent ASME, DIN & EN Standard
Grades	TP430; 1.4016
Type	U-bend / Straight seamless tube
Outer Diameter	1/4'' to 2'' or custom size
Wall Thickness	BWG25;BWG22;BWG20;BWG18;BWG16;BWG14;BWG12;BWG10
Length	Upto 6 meters or custom cut lengths
Delivery Condition	Solution Annealed & Pickled
Ends	Plain End, Beveled End
Other Testing	Product Analysis, Eddy Current Test, Hydrostatic Test, Ultrasonic Test, Flattening Test, Hardness Test, Tensile Test etc.
Dimension	All Pipe & Tube Is Manufactured and Inspected / Tested to the Relevant standards including ASTM and ASME
Packing	Plywood case/Woven bag in bundle

 

Chemical Composition:

Grade	UNS	C	Mn	P	S	Si	Cr
TP430	S43000	0.12 max	1.00 max	0.04 max	0.03 max	1.00 max	16.0-18.0

 

Mechanical Properties:

Grade	UNS	Tensile Strength, min, ksi (MPa)	Yield Strength, min, ksi (MPa)	Elongation in 2 in. or 50mm, min (%)	Hardness
					Rockwell	Brinell
TP430	S43000	60(415)	35(240)	20	90HRB	190HBW

 

 

ASTM A268 Test Requirements

The tubes shall have a hardness number that will not exceed the prescribed Brinell and Rockwell hardness values, TP410, TP430 and TP439 max Rockwell hardness 90, Test report required certification conform to Specification A1016/A1016M.

Several mechanical tests shall be conducted, namely:

Hydrostatic or nondestructive electric test.

Tension test;

Flaring test (for seamless tubes);

Flange test (for welded tubes);

Hardness test;

Reverse flattening test;

Intergranular corrosion test; and

 

If you have a project need for ASTM A268 stainless steel pipe, please feel free to place an order. GNEE has a large inventory of popular products for you to choose from.
ASTM A268 is the standard specification for seamless and welded ferritic and martensitic stainless steel pipe for general use. Grades TP410, TP405, TP420, TP430, TP430Ti, TP403, TP409, TP444, TP439, and TP446 are included. The pipe is manufactured by the seamless or welded process and reheated to 1200°F (650°C) or higher, then cooled to meet the requirements of this specification. All pipe must be free of excessive mill scale for inspection. Small amounts of mill scale are not considered mill scale.

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