ASME B16.11 NPT Flush/Hex A182 F904L Duplex Stainless Steel 904L N08904 Bushing
1. Specification for ASME B16.11 NPT Flush/Hex A182 F904L Duplex Stainless Steel 904L N08904 Bushing
| Specifications | ASTM A182 & ASME SA182 |
| Size | 1/8” NB to 4” NB |
| Standards | ASME 16.11 Socket-welding/Threaded Pipe coupling |
| Class | 2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
| Type | 90°Elbow/ 45°Elbow/ Tee/ Cross/Pipe Cap/Street Elbow/Lateral Tee |
| Coupling/Full Coupling/Half Coupling |
| Bushing/Flush Bushing/Hex Bushing |
| Hex Plug/Round Plug/Square Plug |
2. A182 F904L Duplex Stainless Steel 904L N08904 Material Introduction
Grade 904L stainless steel is a non-stabilized austenitic stainless steel with low carbon content. This high alloy stainless steel is added with copper to improve its resistance to strong reducing acids, such as sulphuric acid. The steel 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 stainless steel 2205.
The table below provides the compositional ranges of grade 904L stainless steels:
Table 1. Composition ranges of grade 904L stainless steels
| 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 |
Mechanical Properties
The typical mechanical properties of grade 904L stainless steels are given in the table below:
Table 2. Mechanical properties of grade 904L stainless steels
| 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 |
Physical Properties
The physical properties of grade 904L stainless steels are tabulated below:
Table 3. Typical physical properties of grade 904L stainless steels
| Grade | Density
(kg/m3) | Elastic Modulus
(GPa) | Mean Co-eff of Thermal Expansion (µm/m/°C) | Thermal Conductivity
(W/m.K) | Specific Heat 0-100°C
(J/kg.K) | Elec Resistivity
(nΩ.m) |
| 0-100°C | 0-315°C | 0-538°C | At 20°C | At 500°C |
| 904L | 7900 | 190 | 15 | - | - | 11.5 | - | 500 | 952 |
Grade Specification Comparison
The following table outlines the approximate grade comparisons of 904L stainless steels:
Table 4. Grade specifications of grade 904L stainless steels
| Grade | UNS No | Old British | Euronorm | Swedish SS | Japanese JIS |
| BS | En | No | Name |
| 904L | N08904 | 904S13 | - | 1.4539 | X1NiCrMoCuN25-20-5 | 2562 | |
3.Uses & Application
| Chemical | Oil Mills | Petrochemical | Mining |
| Fertilizers | Shipbuilding | Power Plant | Steel Plant |
| Oil & Gas | Defence | Paper | Ports |
| Cement | Engineering Co. | Sugar | Government Org. etc. |
4.Tests we carry out (including both Destructive and Non-Destructive)
- Positive material recognition
- Mechanical examining like tensile, Elongation and reduction of area.
- Large-scale test
- Chemical examination-Spectro analysis
- Firmness test
- Pitting protection test
- Hydrogen-effected cracking test approved by NACE TM0284
- Small tests
- X-ray test
- Impact analysis
- Eddy current examining
- Hydrostatic analysis
- Prompt test
- Sulfide stress corrosion test approved by NACE TM 0177
- Curve test
5.Packing
Packing is quite important especially in a case of international shipments in which consignment pass through various channels to reach the ultimate destination, so we put special concern regarding packaging.
We pack our goods in numerous ways based on the products. We pack our products in multiple ways, such as,
- Shrink-wrapped
- Carton boxes
- Wooden pallets
- Wooden boxes
- Wooden crates
Product Tags:
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ASME B16.11 NPT Flush/Hex A182 F904L Duplex Stainless Steel 904L N08904 Bushing Images
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