347, 347H stainless steel heat exchanger

Short Description:

SS 1.4550 Heat Exchanger Tube, 347H Stainless Steel Heat Exchanger Tubing, Stainless Steel 347 Seamless Heat Exchanger Tubes, Stainless Steel 347H Heat Exchanger Tube, ASTM A249 347 Stainless Steel Seamless Heat Exchanger Tubing Supplier.

SS 347 U Bend Exchanger Tubing, AISI 347H Heat Exchanger Tubing, SS 1.4961 U Tube Heat Exchanger, SS S34709 Shell and Tube Heat Exchanger, SS UNS S34700 Heat Exchanger Tubes, ASME SA 249 SS 347H Heat Exchanger Tubes Manufaturer.

Stainless Steel 347 / 347H Heat Exchanger Tubes. We are heat exchanger tube producing company in India delivering them to the whole world. So as to meet global market requirements we consider international approved standards for production. We are building them in various sizes, shapes, and designations to fulfill each requirement of the customers. We are approved to various government LABS and authorities that makes us first person choice for SS products.

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Features

Resistance ability of grade 347/ 347H
These grades offer a similar amount of corrosion resistance as stabilized chromium grades. It has overall general and local corrosion resistance ability. Generally, it is a stabilized SS grade which offers excellent resistance to intergranular corrosion in exposure to high temperatures. It is resistive to chromium carbide range of precipitation( sensitization) in the temperature 427 to 816 degree C. It is stabilize against chromium carbide formation.
Alloy 347/ 347H is susceptible to stress corrosion cracking (SSC) in halides environments. This is due to its nickel content. It has alloying elements allows it to use in the pitting and crevice corrosion environments. It exhibits oxidation resistance compared to the conventional grades. The desired physical properties are derived from the heat treatment process. Usually alloy 347 is non-magnetic in nature in the annealed conditions, however, it slightly becomes magnetic when exposed to cold working operations.
Forming details
It has good cold work hardening rate. The hot forming temperature of the alloy is 2100- 2250 degree F and it is recommended for fabrication. It is immediately quenched or fully annealed that retain higher mechanical properties. It has good weldability, machinability, formability, and fabricability feature.
Product inspection
At the time of manufacturing, there are much chance of faulty products that are produced. In order to remove them, they are inspected in our testing facility. The tests propelled by us are natural circulation stability tests, PMI test, hardness test, Thermal performance test, and chemical test. Other tests are a mechanical test, destructive test, macro test, IGC test, pitting corrosion test, compression test, leakage test, and ultrasonic test.

Ss 347 / 347h Heat Exchanger Tubes Specification

Range : 10 mm OD to 50.8 mm OD
Outer Diameter : 9.52 mm O.D to 50.80 mm O.D
Thickness : 0.70 mm to 12.70 mm
Length : up to 12 Meters Leg Length & Customed Length
Specifications : ASTM A249 / ASTM SA249
Finish : Annealed, pickled & polished, BA

Equivalent Grade of Stainless Steel 347 / 347H Heat Exchanger Tubes

STANDARD	UNS	WERKSTOFF NR.
SS 347	S34700	1.4550
SS 347H	S34709	1.4961

Chemical Composition of SS 347 / 347H Heat Exchanger Tube

SS	347	347H
Ni	09 – 13	09 – 13
Fe	–	–
Cr	17 – 20	17 – 19
C	0.08 max	0.04 – 0.08
Si	1 max	1 max
Mn	2 max	2 max
P	0.045 max	0.045 max
S	0.030 max	0.03 max
OTHER	Nb=10(C+N) – 1.0	8xC min – 1.00 max

Mechanical Properties of SS 347 / 347H Heat Exchanger Tubes

Grade	347 / 347H
Tensile Strength (MPa) min	515
Yield Strength 0.2% Proof (MPa) min	205
Elongation (% in 50mm) min	40
Hardness	–
Rockwell B (HR B) max	92
Brinell (HB) max	201