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UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L

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UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L

China UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L supplier
UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L supplier UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L supplier UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L supplier UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L supplier

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Product Details:

Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001:2008, PED 97/23/EC
Model Number: 904L UNS N08904 1.4539

Payment & Shipping Terms:

Minimum Order Quantity: Negotiation
Price: Negotiation
Packaging Details: PLY-WOODEN CASE / BUNDLE WITH PLASTIC CAP
Delivery Time: 10 DAYS
Payment Terms: T/T or L/C
Supply Ability: 1000 TONS / MONTH
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Detailed Product Description
Material: 904L UNS N08904 1.4539 Type: SEAMLESS
Production: COLD DRAWN Testing: 100% ET
Mill Test Report: EN10204 3.1 Size Range: 15.88MM - 50.8MM

UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L

 

 

UNS N08904, commonly known as 904L, is a low carbon high alloy austenitic stainless steel which is widely used in applications where the corrosion properties of AISI 316L and AISI 317L are not adequate.

The addition of copper to this grade gives it corrosion resistant properties superior to the conventional chrome nickel stainless steels, in particular to sulphuric, phosphoric and acetic acids. However, there is limited use with hydrochloric acids. It also has a high resistance to pitting in chloride solutions, a high resistance to both crevice and stress corrosion cracking. Alloy 904L performs better than other austenitic stainless steels due to the higher alloying of nickel and molybdenum.

The grade is non-magnetic in all conditions and has excellent formability and weldability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures.

The high chromium content promotes and maintains a passive film which protects the material in many corrosive environments.904L has a greater resistance to precipitation of ferrite and sigma phases on cooling and welding than other stainless steels containing molybdenum such as 316L and 317L. There is no risk of intercrystalline corrosion on cooling or welding due to the low carbon content. Its maximum service temperature is at 450°C.

 

Applications:

 

Seawater cooling equipment

 

Chemical processing for sulphuric, phosphoric and acetic acids

 

Gas washing

 

Condenser tubes

 

Control and instrumentation

 

Heat exchangers

Production and transport of sulfuric acid

Metal pickling in sulfuric acid

Production and concentration of phosphoric acid

Use in seawater, brackish water, condensers, heat exchangers and pipe work in general

Paper and allied industries

Gas washing

Chemical and pharmaceutical industries

 

Specifications:

 

ASTM A213

 

ASTM A269

 

ASTM A312

 

BS EN 10216 pt.5

 

Mechanical Properties:

 

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 - 0.7

 

UNS N08904 1.4539 Seamless Stainless Steel Tube Heat Exchanger Grade 904L

 

 

 

 

 

 

 

 

 

Contact Details
Spezilla Tube Co., Ltd.

Contact Person: Will Ma

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