904L Pipe fittings,904L Elbow,Tee,reducer,1.4539 Pipe fittings,ASME B16.9,N08094 Elbow
ASTM B366 WP904L Material 1.4539 (alloy 904L, UNS N08094) is an austenitic special steel with high molybdenum content as well as addition of copper and extremely low carbon content.
904L is a non-stabilised low carbon high alloy austenitic stainless steel. The addition of copper to this grade gives it greatly improved resistance to strong reducing acids,particularly sulphuric acid. It is also highly resistant to chloride attack – both pitting crevice corrosion and stress corrosion cracking. This grade is non-magnetic in all conditions and has excellent weldability and formability. The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures. 904L does have very substantial contents of the high cost ingredients nickel and molybdenum. Many of the applications in which this grade has previously performed well can now be fulfilled at lower cost by duplex stainless steel 2205 (S31803 or S32205),
Our product range in 1.4539 are tubes and pipes, fittings and flanges, accessories.
1. Commodity: 904L Pipe fittings,904L Elbow,Tee,reducer,1.4539 Pipe fittings,ASME B16.9
2. Material: UNS N0904L
3. Standards:ASME B16.9 ASTM B366
ASTM A 312 – seamless, welded, and heavily cold worked austenitic stainless steel pipes
ASTM A 213 – seamless ferritic and austenitic alloy-steel boiler, super heater, and heat-exchanger tubes
ASTM A 269 – seamless and welded austenitic stainless steel tubing for general service
ASTM B 677 – uns n08904, uns n08925, and uns n08926 seamless pipe and tube8904/904L
4. Size:
A) NPS: 1/8″ to 24″
B) Schedule: 5/5S, 10/10S, 20/20S, 40/40S, 80/80S, 120/120S, 160/160S, acc. To ANSI B36.19
|
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 |
|
Grade |
Tensile Strength (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness |
|
|
Rockwell B (HR B) |
Brinell (HB) |
||||
|
904L |
490 |
220 |
36 |
70-90 typical |
150 |
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS | ||
| BS | En | No | Name | ||||
| 904L | N08904 | 904S13 | – | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | – |
|
Coefficient of thermal expansion ( x10-6 K-1 ) |
16-18 @ 20-100°C |
|
Maximum use temperature in air ( °C ) |
800 |
UNS NO8904, commonly known as 904L stainless steel, is a low carbon austenitic nickel-chromium stainless steel with additions of molybdenum and copper. 904L pipe fittings, 904L flanges and 904L product forms are mainly used where the corrosion resistant properties of 316L and 317L are inadequate, especially in severe corrosive conditions.
| Specification | ASTM B 366 / ASME SB 366 |
| Type | Seamless / Welded / Fabricated |
| Products | Elbow，Tee，reducer,Caps |
| Range | ½”NB to 48″NB in Sch 10s, 40s, 80s, 160s, XXS. |
| Dimensions | ANSI/ASME B16.9, B16.28, MSS-SP-43. |
