TP 347 • TP 347H • 1.4550 • 1.4912

Manufacturer of TP 347 | Manufacturer of TP 347H | 1.4550 Stainless Steel | 1.4912 Stainless Steel

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Overview:

Krystal is a renowned exporter, manufacturer, stockist, supplier, and stockholder of high-quality TP 347 and TP 347H Stainless Steel Tubes and Pipes. These austenitic stainless steel products are celebrated for their exceptional resistance to corrosion, high-temperature strength, and superior performance in demanding environments, including chemical processing, petrochemical, power generation, and high-pressure industries. TP 347H offers excellent weldability, making it suitable for fabrication and forming applications.

TP 347H (1.4550 / UNS S34700) is a stabilized grade of stainless steel, designed to offer excellent resistance to intergranular corrosion in the weld heat-affected zone. Its addition of columbium (niobium) ensures stability, even in high-temperature environments, and it provides superior resistance to sensitization. TP 347 is ideal for use in applications requiring good oxidation resistance and high-temperature strength, while maintaining excellent corrosion resistance in sulfur-containing environments.

TP 347H is widely used in critical applications requiring high strength and resistance to high temperatures and aggressive environments. Typical applications include heat exchangers, boiler tubes, pressure vessels, furnace parts, flue gas scrubbers, chemical and petrochemical process equipment, and components for power plants and refineries.

AVAILABLE TUBE PRODUCT FORMS
Straight Tube \| Straight Pipe \| U - Tube \| Coiled Tube

TYPICAL APPLICATIONS
HEAT EXCHANGERS
STEAM GENERATORS
REBOILER TUBES
BRINE HEATERS AND EVAPORATOR BODIES IN SALT PLANT
NUCLEAR CORE COOLING TUBES
SULPHURIC AND HYDROFLURIC ACID ALKYLATION PLANT
CONTROL LINES

TYPICAL MANUFACTURING SPECIFICATIONS
-	-
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Also individual customer specifications.

INDUSTRIES PREDOMINANTLY USING THIS GRADE
CHEMICAL PROCESSES
OIL AND GAS
NUCLEAR AND POWER

Technical Specifications

CHEMICAL COMPOSITION (% by weight)
Element	TP 347		TP 347H
	Min	Max	Min	Max
C	-	0.08	0.04	0.10
Mn	-	2.00	-	2.00
Si	-	1.00	-	1.00
P	-	0.045	-	0.040
S	-	0.015	-	0.03
Cr	17.00	19.00	17.00	20.00
Ni	9.00	12.00	9.00	13.00

PHYSICAL PROPERTIES (Room Temperature)
Specific Heat (0-100°C)	500	J.kg-1.°K-1
Thermal Conductivity	16.3	W.m -1.°K-1
Thermal Expansion	15.9	mm/m/°C
Modulus Elasticity	193	GPa
Electrical Resistivity	74	μOhm-cm
Density	8.00	g/cm³