ASTM A814 TP304L Cold Worked Welded Austenitic Stainless Steel Pipe For General Purpose
Introduction
ASTM A814 TP304L TP316L TP304 TP304H TP309CB is a cold-worked welded austenitic stainless steel pipe commonly used for general purposes. This article provides an overview of the material, its specifications, key features, chemical composition, mechanical properties, steel grades, applications, and possible alternative grades.
Material and Specification
ASTM A814 TP304L TP316L TP304 TP304H TP309CB is a specific type of stainless steel pipe that is cold-worked and welded. It is designed to meet the requirements of ASTM A814/A814M, which covers standard specifications for cold-worked welded austenitic stainless steel pipe intended for general corrosion-resisting and low- or high-temperature service.
The material is manufactured using various processes such as cold working, welding, and heat treatment to ensure its desired properties and performance.
Key Features
- Corrosion resistance: ASTM A814 TP304L TP316L TP304 TP304H TP309CB exhibits excellent resistance to corrosion, making it suitable for various environments.
- High strength: The cold-worked nature of this stainless steel pipe enhances its strength and durability.
- Good weldability: ASTM A814 TP304L TP316L TP304 TP304H TP309CB can be easily welded using common welding techniques, ensuring ease of installation and fabrication.
- Versatility: This stainless steel pipe is suitable for a wide range of applications due to its general-purpose nature.
Chemical Composition
| Element | TP304L (%) | TP316L (%) | TP304 (%) | TP304H (%) | TP309CB (%) |
| Carbon (C) | ≤ 0.035 | ≤ 0.035 | ≤ 0.08 | ≤ 0.04 | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Chromium (Cr) | 18.0 - 20.0 | 16.0 - 18.0 | 18.0 - 20.0 | 18.0 - 20.0 | 22.0 - 24.0 |
| Nickel (Ni) | 8.0 - 12.0 | 10.0 - 14.0 | 8.0 - 12.0 | 8.0 - 11.0 | 12.0 - 15.0 |
Mechanical Properties
| Property | TP304L | TP316L | TP304 | TP304H | TP309CB |
| Tensile Strength | ≥ 485 MPa | ≥ 485 MPa | ≥ 515 MPa | ≥ 515 MPa | ≥ 515 MPa |
| Yield Strength | ≥ 170 MPa | ≥ 170 MPa | ≥ 205 MPa | ≥ 205 MPa | ≥ 205 MPa |
| Elongation | ≥ 35% | ≥ 35% | ≥ 35% | ≥ 35% | ≥ 35% |
| Hardness (Brinell) | ≤ 170 HBW | ≤ 170 HBW | ≤ 200 HBW | ≤ 200 HBW | ≤ 200 HBW |
Steel Grades
ASTM A814 TP304L TP316L TP304 TP304H TP309CB consists of multiple steel grades, each with its own specific composition and properties. The steel grades included in this specification are:
- TP304L
- TP316L
- TP304
- TP304H
- TP309CB
Application
ASTM A814 TP304L TP316L TP304 TP304H TP309CB stainless steel pipe is widely used in various industries and applications, including:
- Chemical processing
- Food and beverage industry
- Pharmaceutical industry
- Petrochemical industry
- Water treatment plants
- Heat exchangers
- Architectural applications
Possible Alternative Grades
While ASTM A814 TP304L TP316L TP304 TP304H TP309CB is commonly used, there are alternative grades available that may suit specific requirements. Some possible alternative grades include:
- ASTM A312 TP304L: This seamless pipe grade offers similar chemical composition and mechanical properties.
- ASTM A312 TP316L: Another seamless pipe grade with enhanced corrosion resistance and high-temperature strength.
- ASTM A249 TP304: A welded stainless steel pipe grade suitable for heat exchangers and condenser tubes.
- ASTM A249 TP316: A welded stainless steel pipe grade with excellent corrosion resistance in various environments.
It is important to consult with industry experts and consider specific project requirements when selecting an alternative grade.
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