904L Stainless Steel - UNS N08904 Super Austenitic Materials
Introduction
Overview of 904L Stainless Steel
Grade 904L stainless steel is the super austenitic stainless steel with low carbon chemical components.
904L steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. The alloy is also resistant to stress corrosion cracking and crevice corrosion.
Grade 904L is non-magnetic, and offers excellent formability, toughness and weldability.
Grade 904L contains high amounts of expensive ingredients, such as molybdenum and nickel. Today, most of the applications that employ grade 904L are replaced by low-cost duplex 2205 and 2507 stainless steel.
Futures of 904L Stainless Steel
904L stainless steel features:
- Low carbon content
- High chromium content
- Good corrosion resistance in the presence of chloride ions
- Good general corrosion resistance
904L Stainless Steel Applications
- Petrochemical equipment, reactor
- Heat exchanger
- Power plant flue gas desulfurization device
- Organic acid treatment system
- Sea water heat exchanger
- Paper industry equipment
- Pharmaceutical industry and other chemical equipment
- Food equipment
- Oil refinery components
- Gas scrubbing plants
- Pulp and paper processing industries
- Acetic, phosphoric and sulphuric acid processing plants
904L Stainless Steel Tags
- Grade 904L
- Type 904L
- Inox 904L
- AISI 904L
- SUS 904L
- 1.4539
- UNS N08904
Quality Products
Technical Data
| 904L Stainless Steel Standards Comparison Table | ||||||||
| STS | USA | UNS | CHINA | EURONORM | RUSSIA | SWEDISH | JAPANESE | |
| GRADE | AISI/ASTM | NO | GB | NO | NAME | GOST | SS | JIS |
| 904L | 904L | N08904 | – | 1.4539 | X1NiCrMoCuN25-20-5 | – | 2562 | – |
| Grade | Standard | C | Si | Mn | P | S | Cr | Ni | Mo |
| 904L | ASTM | ≤0.02 | ≤0.10 | ≤2.00 | ≤0.045 | ≤0.035 | 19.00-23.00 | 23.00-28.00 | 4-5 |
| Grade | EN Grade | Yield Strength Rp0.2(N/mm²) | Tensile Strength Rm(N/mm²) | Hardness | Hardness(HRB) | Elongation A50% |
| 904L | 1.4539 | ≥220 | ≥490 | Annealed | 70-90 | ≥36 |
Related Resources
What Is The Difference Between 316L And 904L Stainless Steel Strip?
Stainless steel strips are one of the most popular choices for many industries out there. The strength, durability, and performance make it a top choice for many people. But what’s the difference between 316L stainless steel strip and 904L stainless steel strip? Let’s keep reading.
