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Stainless Steel ASTM A403 WP304L Pipe Fitting Butt Weld Cap for Power Generation
Overview
ASTM A403 WP304L PIPE FITTINGS mean the pipe fittings which material is wrought austenitic stainless grade WP304L,they are used for the pressure piping systems of moderate and high temperature services.ASTM A403 is the standard of pipe fittings material,it indicates the materials properties of different kinds of stainless steel,WP304L is one of the steel grade in this standard.The corrosion resistance of 304L and 304 are similar.But after eliminate stress or welding,corrosion resistance of 304L will be more excellent.ASTM A403 WP304L is the most common stainless steel pipe fittings material.
Advantages
A403 WP304L is a specific grade of stainless steel that is commonly used in the manufacturing of pipe fittings. Butt weld caps, in particular, offer several advantages in various industrial applications. Here are some advantages of A403 WP304L pipe fitting butt weld caps:
Corrosion Resistance: A403 WP304L is a low-carbon variation of the popular 304 stainless steel grade. It provides excellent corrosion resistance, making it suitable for use in corrosive environments, such as chemical processing plants and marine applications.
High Temperature Resistance: Stainless steel, including A403 WP304L, can withstand high temperatures, making it suitable for applications involving hot fluids or gases. Butt weld caps maintain their integrity and mechanical properties at elevated temperatures.
Hygienic Properties: A403 WP304L is often used in industries where hygiene is crucial, such as the food and beverage and pharmaceutical industries. The smooth surface of butt weld caps reduces the risk of bacterial growth and is easy to clean.
Strength and Durability: Butt weld caps provide a strong and durable end closure for pipes. The welding process ensures a secure connection, and the material properties of A403 WP304L contribute to the overall strength and longevity of the pipe system.
Aesthetic Appearance: Stainless steel has a visually appealing, shiny surface that maintains its appearance over time. This is particularly important in industries where aesthetics matter, such as architectural and decorative applications.
Ease of Welding: Butt welding is a common and reliable method for connecting pipe fittings. A403 WP304L is easily weldable, facilitating the welding process and ensuring a strong and leak-free connection.
Versatility: A403 WP304L butt weld caps are versatile and suitable for a wide range of applications across various industries. They can be used in diverse environments and for different types of fluids or gases.
Low Maintenance: Stainless steel requires minimal maintenance compared to other materials. A403 WP304L butt weld caps are resistant to rust and staining, reducing the need for frequent inspections and maintenance.
It's important to note that the suitability of A403 WP304L butt weld caps depends on the specific requirements of the application. Factors such as temperature, pressure, and the nature of the conveyed fluids should be considered when selecting materials for pipe fittings.
| Specifications | ASTM A403 / ASME SA403 |
| Size | 1/8” NB To 48” NB |
| Standards | ASME/ANSI B16.9, ASME B16.28, MSS-SP-43 |
| Thickness | SCH5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS |
| Type | Seamless / Welded / Fabricated |
Chemical Composition
| Grade | C | Mn | Si | P | S | Cr | Ni |
| WP304L | 0.035 max | 2 max | 1 max | 0.045 max | 0.03 max | 18 – 20 | 8 – 13 |
Mechanical Properties
| Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | |||
| 485 | 170 | 40 | 92 | 201 |
Physical Properties
| Density (g/Cm3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (μm/m/°C) | Thermal Conductivity (W/m.K) | Specific Heat 0-100°C (J/kg.K) | Electrical Resistivity (nΩ.m) | |||
| 0-100°C | 0-315°C | 0-538°C | 100°C | 500°C | ||||
| 8 | 193 | 17.2 | 17.8 | 18.4 | 16.2 | 21.5 | 500 | 720 |
Equivalent Grades
| Standard | SS 304L |
| WERKSTOFF NR. | 1.4306 / 1.4307 |
| UNS | S30403 |
| JIS | SUS 304L |
| BS | 3304S11 |
| GOST | 03Х18Н11 |
| AFNOR | Z3CN18‐10 |
| EN | X2CrNi18-9 / X2CrNi19-11 |
Applications
