Name: ASME SA213 TP347H Seamless Tube Austenitic Stainless Steel Heat Exchanger & Boiler Tube
Brand: Yuhong Group Co.,Ltd
SKU: ASTM A213 TP347, ASTM A213 TP347H
Price: 1000000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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ASME SA213 TP347H Seamless Tube Austenitic Stainless Steel Heat Exchanger & Boiler Tube

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 A213 TP347, ASTM A213 TP347H

Payment & Shipping Terms:

Minimum Order Quantity:	100KGS
Price:	Negotiable
Packaging Details:	Ply-wooden Case /Iron Case/ Bundle with plastic Cap
Delivery Time:	Depends on quantity
Payment Terms:	T/T,L/C
Supply Ability:	1000 Tons per month

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Detailed Product Description

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ASME SA213 TP347H seamless tube

austenitic stainless steel boiler tube

heat exchanger tube with warranty

ASME SA213 TP347H Seamless Tube Austenitic Stainless Steel Heat Exchanger & Boiler Tube

High-Temperature & Corrosion-Resistant Tubing for Critical Applications

ASTM A213 TP347H is a seamless, austenitic stainless steel tube specifically engineered for high-temperature service in demanding environments. Designated as a heat-resistant grade (indicated by the "H"), it delivers superior creep-rupture strength compared to its non-H counterparts, making it a reliable choice for pressure-bound applications.

This grade belongs to the niobium-stabilized Cr-Ni austenitic family. The addition of niobium (Nb) significantly enhances its resistance to intergranular corrosion, particularly in environments containing acids, alkalis, and salts. It offers better high-temperature strength and oxidation resistance than standard Type 316 stainless steel.

Primary Standards & Specifications

Governing Standard: ASTM A213/A213M - Specification for Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
Common Size Range: Outside diameter from 3.2 mm (1/8 in) to 127 mm (5 in) with minimum wall thickness ranging from 0.4 mm to 12.7 mm
Manufacturing Process: Seamless, available in hot-finished or cold-finished conditions

Material & Chemical Composition

TP347H is a high-carbon, niobium-stabilized austenitic stainless steel. The chemical composition ensures stability and strength under thermal stress.

Element	Composition Range (%)	Key Function
Carbon (C)	0.04 - 0.10	Enhances high-temperature strength
Manganese (Mn)	≤ 2.00	Improves hot ductility and strength
Silicon (Si)	≤ 1.00	Deoxidizer that improves oxidation resistance
Phosphorus (P)	≤ 0.045	Impurity element, controlled to low levels
Sulfur (S)	≤ 0.030	Impurity element, controlled to low levels
Chromium (Cr)	17.00 - 19.00	Provides fundamental corrosion and oxidation resistance
Nickel (Ni)	9.00 - 13.00	Stabilizes the austenitic structure and improves toughness
Niobium (Nb)	0.80 - 1.00 (or 8xC min)	Critical Element. Forms stable carbides to prevent chromium depletion at grain boundaries, granting exceptional resistance to intergranular corrosion

Mechanical & Physical Properties

TP347H offers a robust combination of strength, ductility, and stability for high-temperature operations.

Property	Standard Requirement
Tensile Strength	≥ 515 MPa (75 ksi)
Yield Strength (0.2% Offset)	≥ 205 MPa (30 ksi)
Elongation (A5)	≥ 35%
Hardness (Brinell)	≤ 192 HB

Main Application Scenarios

Thanks to its high-temperature strength, oxidation resistance, and corrosion stability, ASTM A213 TP347H tubes are the material of choice for critical components in several heavy industries:

Power Generation: Superheater and reheater tubes, main steam lines, and high-pressure boiler tubing in fossil fuel and thermal power plants
Petrochemical & Chemical Processing: Heat exchanger tubes, reactor internals, and piping systems that handle corrosive media at elevated temperatures
Oil & Gas Refining: Tubing for refinery heaters, heat recovery systems, and other high-temperature processing units
Other Industries: Also finds application in synthetic fiber, food, and paper industries where similar corrosion and temperature challenges exist