ASME SA213 TP444 Stainless Steel Seamless Tube for Heat Exchanger

ASME SA213 TP444 is a ferritic stainless steel seamless pipe designed for high-temperature, high-pressure applications such as heat exchangers, boilers, and superheaters due to its excellent corrosion resistance. Its composition, including molybdenum, nitrogen, and copper, makes it an ideal choice for the petrochemical, power generation, chemical processing, and desalination industries. When using ASME SA213 TP444 seamless stainless steel pipe, operating temperatures must be strictly controlled to avoid the brittle range of 370-540°C, and standard procedures must be adhered to during welding and cold working.

 

ASME SA213 seamless stainless steel pipe can be customized to meet customer specifications, including dimensions, wall thickness specifications, and heat treatment, to meet more demanding application requirements. Typically, ASME SA213 seamless stainless steel pipe is available in sizes ranging from 1/2-inch to 8-inch NB and conforms to current ASTM, API, and ASME standards.

 

 

ASME SA213 TP444 Chemical Element Composition Content

GRA.	C	Si	Mn	P	S	Cr	Mo	N	More
TP444	0.03	1.00	1.00	0.04	0.03	17.5-19.5	1.75-2.5	0.035	Ni+Cu≤1.00;Ti+Nb:0.20+4(C+N) ~ 0.80

 

ASME SA213 TP444 Stainless Steel Seamless Heat Exchanger Tube Mechanical Properties

Tensile strength σb, Mpa	Yield point σs, Mpa	Elongation or elongation after fracture δ, %	Hardness HBW
≥415	≥275	≥20	≤217

 

 

ASME SA213 TP444 Stainless Steel Seamless Tube Application

Power plants: Flue gas heat exchangers and economizers.

Petrochemical industry: Various coolers and condensers, particularly in chloride-containing circulating water systems.

Environmental protection and desalination: Heat exchangers in wastewater treatment systems, multi-stage flash evaporators or heat exchangers in desalination plants.

Pulp and paper industry: Equipment for handling chloride-containing chemical solutions.

 

ASTM A213 Testing Requirement
Each tube shall be subjected to the nondestructive electric test or hydrostatic test, Manufacturer Material Test Certification as per EN 10204 3.1 should be provided.

Tensile property, Elongation
Hardness testing, Brinell, Rockwell, Vickers hardness
Flattening testing
Flaring testing
Hydrostatic or Nondestructive test
Intergranular Corrosion Test – ASTM A262/E (option)

 

GNEE is a professional manufacturer and supplier of ASTM A213 seamless pipes, capable of producing a wide range of sizes for heat exchanger systems. The manufacturing process begins with extruded billets, which are then cold rolled and drawn to control dimensions and tolerances. Following cold working, the steel is heat treated to achieve its original properties, enhancing its high-temperature and corrosion resistance. The pipes are then pickled and passivated.

Grades: 304/304L, 304H, 316/316L, 316H, 317L, 321, 310S (2520), 347H, S31803/S32205, S32750, S32760, S32304, 904L
Specifications: ASTM A213, A270, A789, A790, GB/T13296, DIN17458, EN10216-5
Outer Diameter Range: 1.58mm – 108mm
Thickness: 0.38mm – 5.18mm
Length: Maximum 25mm (U-bend compatible)
Surface Treatment: A&P, BA, EP