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304H stainless steel heat exchanger

Short Description:

AISI 304H Heat Exchanger Tubing, SS 304H U Bend Exchanger Tubing, ASME SA 249 SS 304H Heat Exchanger Tubes, SS UNS S30409 Heat Exchanger Tubes, SS 1.4948 U Tube Heat Exchanger, SS S30409 Shell and Tube Heat Exchanger Manufaturer .


Product Detail

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Basic Information

Heat Exchangers Tubes are basically used to transfer the heat from one static point to another with transmitting the heat between more than one fluids. These exchangers can be found in refrigerators and automobile industries where there is a high temperature and heat environment. Usually, in the exchangers the heat transfer takes place by passing the fluid through parallel tubes. a variety of materials are used in the fabrication of these tubes. But the most versatile and highly useful steel is Stainless Steel because of its good characteristics and balanced chemical compositions.

Stainless steel contains slight amount of chromium which when increases the resistive property of the steel also increase. The presence of molybdenum in the steel enhances its strength and other properties. 304H is a high carbon Stainless Steel grade which is preferable over any other SS grades due to its properties and tolerance in extensive environment. 304H grade offers high tensile strength, greater short creep properties and excellent heat resistive qualities. This is also the reason of picking up this grade in the fabrication of heat exchangers tubes.

Talking about its physical properties, the SS 304H offers excellent resistance to corrosion, pitting resistance to chloride environment, stress crack corrosion resistance and crevice corrosion resistance at high elevated temperature and pressure.

13_304H-Stainless-Steel-Heat-Exchanger
10_304H-Stainless-Steel-Heat-Exchanger
07_304H-Stainless-Steel-Heat-Exchanger

Specifications

Equivalent Grade of Stainless Steel 304H Heat Exchanger Tubes

STANDARD

UNS

WERKSTOFF NR.

SS 304H

S30409

1.4948

Chemical Composition of SS 304H Heat Exchanger Tube

SS

304H

Ni

8 – 11

Fe

Balance

Cr

18 – 20

C

0.04 – 0.10

Si

0.75 max

Mn

2 max

P

0.045 max

S

0.030 max

N

Mechanical Properties of SS 304H Heat Exchanger Tubes

Grade 304H
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

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