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904L Stainless Steel

UNS NO8904, 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 stainless steel 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.

904L Stainless Steel Composition

The table below provides the compositional ranges of grade 904L stainless steels:

Grade

C

Mn

Si

P

S

Cr

Mo

Ni

Cu

904L

min.

max.

-

0.02

-

2

-

1

-

0.045

-

0.035

19

23

4

5

23

28

1

2

904L Stainless Steel 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)

 

904L Stainless Steel 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

904L Stainless Steel Melting Point

904L Density 8.0 g/cm3
904L Melting point 1300-1390 ℃

904l stainless steel equivalent material

The following table outlines the approximate grade comparisons of 904L stainless steels

Grade

UNS No

Old British

Euronorm

Swedish SS

Japanese JIS

BS

En

No

Name

904L

N08904

904S13

-

1.4539

X1NiCrMoCuN25-20-5

2562

-

904L Stainless Steel Price per Pound

904L Stainless Steel Price in India: US $10-12 per Pound

904L Stainless Steel Inventory

 

904L Stainless Steel Products We Supply to:

Saudi Arabia, Iran, Iraq, UAE, Middle East, Qatar, Bahrain, Oman, Kuwait, Turkey, Yemen, Syria, Jordan, Cyprus, Nigeria, Algeria, Angola, South Africa, Libya, Egypt, Sudan, Equatorial Guinea, The Republic Of Congo, Gabon, USA, Canada, Mexico, Panama, Costa Rica, Puerto Rica, Trinidad And Tobago, Jamaica, Bahamas, Denmark, North America, Africa, Europe, Russia, Norway, Germany, France, Italy, UK, Spain, Ukraine, Netherland, Belgium, Greece, Czech Republic, Portugal, Hungary, Albania, Austria, Switzerland, Slovakia, Finland, Ireland, Croatia, Slovenia, Malta, Asia, India, Singapore, Malaysia, Indonesia, Thailand, Vietnam, South Korea, Japan, Sri Lanka, Maldives, Bangladesh, Mayanmar, Taiwan, Cambodia, South America, Argentina, Bolivia, Brazil, Chile, Venezuela, Colombia, Ecuador, Guyana, Paraguay, Uruguay