Stainless Steel 904L is a low carbon high alloy austenitic stainless steel, with an chromium, nickel, molybdenum and copper content, which is widely used in applications where the corrosion properties of Stainless Steel 316L & Stainless Steel 317L are not adequate. although originally develop for greatly improved resistance to strong reducing acids, particularly sulphuric acid. It also has an very high resistance to a wide range of environments. This feature has been verified that it is very successful after many years of practical applications, which has results that Stainless Steel 904L has been standardized in many countries.
Characteristics:
- The high Mo and the addition of copper to this grade gives it greatly improved resistance to strong reducing acids, particularly aspheric acid
- It is highly resistant to chloride attack, both pitting crevice corrosion and stress corrosion crashing
- Good machine ability and weld ability
- The austenitic structure also gives this grade excellent toughness, even down to cryogenic temperatures
Market applications:
- Offshore, Oil and gas equipment
- Stainless Steel Pipe Fittings
- Chemical industry
- Seawater cooling equipment
- Stainless Steel Flanges
- Aircraft piston engine manifolds and exhaust stacks
- Stainless Steel Pipes
- Control and instrumentation
- Pharmaceutical
- Pulp and paper industry
Technical details
| Technical composition (%) | Fe | Cr | Ni | Mo | Mn | Cu | Si | P | N | C | S | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 904L | min | Bal. | 19.0 | 23.0 | 4.0 | - | 1.0 | 0.045 | - | - | - | - | |||||||||||
| max | - | 23.0 | 28.0 | 5.0 | 2.0 | 2.0 | 1.00 | 0.045 | 0.10 | 0.020 | 0.015 | ||||||||||||
| Mechanical properties | 904L | |
|---|---|---|
| Tensile strenght (mpa, min) | 490 - 700 | |
| Yield strength (0.2% offset mpa, min) | 220 | |
| Elongation (%, min) | 35 | |
| Density / weight (g / cm3 / kg) | 8.05 |
TENSILE REQUIREMENTS
Tensile Strength (KSI) 70
Yield Strength (KSI) 25
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.
Tensile Strength (KSI) 70
Yield Strength (KSI) 25
KSI can be converted to MPA (Megapascals) by multiplying by 6.895.
AVAILABILITY
904L Stainless Steel Elbows
904L Stainless Steel Angle Bars
904L Stainless Steel Bars
904L Stainless Steel Pipe Fittings
904L Stainless Steel Tubes
904L Stainless Steel Flanges
904L Stainless Steel U Tubes
904L Stainless Steel Concentric Reducer
904L Stainless Steel Pipes
904L Stainless Steel Seamless Pipe
904L Stainless Steel Angle Bars
904L Stainless Steel Bars
904L Stainless Steel Pipe Fittings
904L Stainless Steel Tubes
904L Stainless Steel Flanges
904L Stainless Steel U Tubes
904L Stainless Steel Concentric Reducer
904L Stainless Steel Pipes
904L Stainless Steel Seamless Pipe
Source: Zhejiang Yaang Pipe Industry Co., Limited (www.yaang.com)
