904L(N08904) austenitic alloy
- Introduction
- 904L is an austenitic alloy designed for middle to high level of corrosion resistance. The alloy contains high levels of chromium and nickel with additions of molybdenum and copper to provide added corrosion resistance. The high nickel (25%) and molybdenum (4.5%) contents of 904L provide good resistance to chloride stress corrosion cracking, general and chloride pitting corrosion resistance above the levels of 316 and 317 stainless. The copper addition in 904L provides added resistance to hot phosphoric acid and dilute sulfuric acid.
- Characters of 904L(N08904) austenitic alloy
- • Very good resistance to uniform corrosion
- • Good to exceptionally good resistance to pitting and crevice corrosion
- • Very good resistance to various types of stress corrosion cracking
- • Very good ductility
- • Good weldability
- • Excellent formability
- Applications of 904L(N08904) austenitic alloy
- • Process equipment in chemical industry
- • Bleaching equipment in the pulp and paper industry
- • Flue gas cleaning
- • Desalination
- • Seawater handling
- • Hydrometallurgy
- • Food and beverage
- • Pharmaceuticals
- • Heat exchangers
- Equal grades
- Chemical composition (%)
- Carbon 0.02% max
- Chromium 19.00-23.00%
- Manganese 2.00% max
- Nickel 23.00-28.00%
- Silicon 1.00% max
- Molybdenum 4.00-5.00%
- Phosphorous 0.045% max
- Copper 1.00-2.00%
- Sulphur 0.035% max
- Standards of 904L(N08904) austenitic alloy
- ASME SB-625, ASME SB-649, ASME SB-673, ASME SB-674, ASME SB-677
- Forms available at A-one Alloy
- Sheet, plate, wire, rod, bar, pipe, tube
- Delivery of 904L(N08904) austenitic alloy
- Plenty of bar in stock. Please contact A-one Alloy for delivery of other products.
