Stainless Steel Heat Exchanger Tubes 904L

Stainless Steel Heat Exchanger Tubes 904L

Stainless Steel 904L heat exchanger tubes manufacturers And Exporter of Quality Stainless Steel 904L heat exchanger tubes.

Stainless Steel 904L heat exchanger tubes Specification, Chemical Compositions, Price List, Application, Stainless Steel 904L heat exchanger tubes stockiest supplier & exporter.

Chemtech Alloys Stainless Steel India manufacturers Stainless Steel 904L heat exchanger tubes

Chemtech Alloys Stainless Steel India manufacturers Stainless Steel heat exchanger tubes 904L

Chemtech Alloys Stainless Steel India manufacturers Stainless Steel heat exchanger tubes

Chemtech Alloys Stainless Steel India manufacturers heat exchanger tubes

Chemtech Alloys Stainless Steel India are remarkable Exporters, Suppliers & Stockiest of an extensive scope of Stainless Steel heat exchanger tubes 904L from Mumbai, India.

N08904 tube, 904L tube, EN number 1.4539 tube, 904L heat exchanger tube, 904L U tube

ALLOY 904L UNS N08904 WNR 1.4539

SS 904L Heat Exchanger Tubes

904L Heat Exchanger U-Tube Stainless Steel Tube

904L is a high-alloy austenitic stainless steel with low carbon content. The evaluation is expected for utilization under serious destructive conditions. It has been application demonstrated over numerous years and was initially created to oppose erosion in weaken sulfuric corrosive. It is institutionalized and endorsed for weight vessel use in a few nations. Basically, 904L is completely austenitic and is less touchy to precipitation ferrite and sigma stages than customary austenitic evaluations with high molybdenum content. Typically, because of the blend of generally high substance of chromium, nickel, molybdenum and copper 904L has great imperviousness to general consumption, especially in sulfuric and phosphoric conditions.

Corrosion resistance:

904L is a high-combination austenitic stainless steel with low carbon content. The evaluation is expected for utilization under serious destructive conditions. It has been application demonstrated over numerous years and was initially created to oppose erosion Grade 904L has a high consumption imperviousness to an extensive variety of destructive situations. A PRE of 35 demonstrates that the steel evaluation has great imperviousness to warm ocean water and other high chloride situations. High nickel substance brings about a vastly improved imperviousness to stretch erosion breaking than the standard austenitic evaluations. Copper upgrades the consumption resistance in specific acids, especially in the extremely forceful "mid focus" range.

Heat Resistance

Great imperviousness to oxidation, however like other much alloyed evaluations experiences auxiliary flimsiness (precipitation of weak stages, for example, sigma) at hoisted temperatures. 904L ought not to be utilized above around 400° C.

Heat Treatment

Solution Treatment (Annealing) - heat to 1090-1175°C and cool rapidly. This grade cannot be hardened by thermal treatment.

Welding

904L can be effectively welded by all standard systems. Care needs to be taken as this evaluation cements completely austenitic, so is powerless to hot splitting, especially in obliged components. No preheat ought to be utilized and as a part of most cases post weld heat treatment is likewise not needed. AS 1554.6 prequalifies Grade 904L poles and cathodes for welding of 904L.

Fabrication

904L is a high immaculateness, low sulfur grade, and accordingly won't machine well. Regardless of this the evaluation can be machined utilizing standard strategies. Bowing to a little sweep is promptly done. By and large this is performed cool. Resulting strengthening is by and large not needed, despite the fact that it ought to be considered if the manufacture is to be utilized as a part of a situation where extreme anxiety erosion splitting conditions are expected.

Heat exchanger tubes

• OD: 12.0-114.3 mm

• WT: 0.6-4.0 mm

• Lengths: up to 15 m

• No BCW for laser welded tubes, h max = 0.15 mm

• Tig welded tubes are BCW

• Solution annealed and pickled



Mechanical Property :

Temper Annealed
Tensile Rm 71 ksi (min)
Tensile Rm 490 MPa (min)
R.p. 0.2% Yield 32 ksi (min)
R.p. 0.2% Yield 220 MPa (min)
Elongation (2” or 4D gl) 35 % (min)


Physical Properties (Room Temperature) :

Specific Heat (0-100°C) 450 J.kg-1.°K-1
Thermal Conductivity 11.5 W.m -1.°K-1
Thermal Expansion 15.8 mm/m/°C
Modulus Elasticity 190 GPa
Electrical Resistivity 9.52 μohm/cm
Density 7.95 g/cm3


Chemical Composition (% by weight) :

Element Min Max
C - 0.2
Mn - 2
Ni 23 28
Cr 19 23
S - 0.3
Mo 4 5
N - 0.1
Cu 1 2
P - 0.03
Si


Features:

• Austenitic micro structure

• High resistance to pitting and crevice corrosion

• High resistance to stress corrosion and corrosion fatigue

• High resistance to uniform corrosion

• Good ductility and weld ability

Applications :

• Process equipment in chemical industry

• Bleaching equipment in the pulp and paper industry

• Flue-gas cleaning

• Desalination

• Seawater handling

• Heat exchangers