Sichuan Liaofu Special Steel Company is one of the most experienced manufacturers and suppliers of 904l steel plate in China. With over 20 years' experience, our factory offer high quality products made in China with competitive price. Welcome to contact us for wholesale service.
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 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.
This grade is particularly useful in control and instrumentation tubing applications where 316 and 317L are not suitable.
| Chemical Composition(%) | |||||||||
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | N |
| 0.02 max | 1.0 max | 2.0 max | 0.040 max | 0.030 max | 19.0-23.0 | 23.0-28.0 | 4.0-5.0 | 1.0-2.0 | 0.10 max |
| 0.02 max | 0.7 max | 2.0 max | 0.040 max | 0.010 max | 19.0-21.0 | 24.0-26.0 | 4.0-5.0 | 1.2-2.0 | 0.15 max |
| Mechanical Properties (Annealed) | ||||
| Hardness (HB) | Tensile Strength (Mpa) | Yield Strength (Mpa) | Elongation (%) (Long.) | Impact Value (J) (Long.) |
| 230 max | 530-730 | 230-260 | 35 min | 100 min |
* Seawater cooling equipment
* Chemical processing for sulphuric, phosphoric and acetic acids
* Gas washing
* Condenser tubes
* Control and instrumentation
* Heat exchangers
Industries predominantly using this Grade
* Chemical processing
* Oil and gas
* Pharmaceutical
Typical Manufacturing Specifications
* ASTM A213
* ASTM A269
* ASTM A312
* BS EN 10216 pt.5
* Also individual customer specifications.
Contact Information:
Contact: Ms.Seth
Mobile:008618161225640
Wechat :18161225640
Manufacturing Process :
Warehouse Stocked:
Hot Tags: 904L Steel Plate, China, manufacturers, suppliers, factory, Metal Stainless Steel Sheet, Hot Rolled 440c Stainless Steel Plates, Duplex S32750 Stainless Steel, S32750 Stainless Steel Coil, Stainless Steel Plate, 904L Stainless Steel Sheet