ASTM A269 is a standard specification for seamless and welded austenitic stainless steel tubing for general service. The material is known for its excellent corrosion resistance, high temperature strength, and good mechanical properties. In this article, we will discuss the material, specification, chemical composition, mechanical properties, steel grade, and application of ASTM A269 stainless steel metal tube in table form.
Material:
ASTM A269 stainless steel metal tube is made from austenitic stainless steel materials such as 304, 304L, 316, 316L, etc.
Specification:
The standard specification for ASTM A269 stainless steel metal tube is based on the ASTM A269/ASME SA269 standard. The tubing is available in sizes ranging from 1/8 inch to 1-1/2 inch outside diameter (OD) with wall thicknesses from 0.028 inches to 0.109 inches.
Chemical Composition:
The chemical composition of ASTM A269 stainless steel metal tube is shown in the table below:
| Steel Grade | C | Si | Mn | P | S | Cr | Ni | Mo |
| 304 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 18.0-20.0 | 8.0-11.0 | - |
| 304L | ≤ 0.03 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 18.0-20.0 | 8.0-13.0 | - |
| 316 | ≤ 0.08 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
| 316L | ≤ 0.03 | ≤ 1.00 | ≤ 2.00 | ≤ 0.045 | ≤ 0.030 | 16.0-18.0 | 10.0-14.0 | 2.00-3.00 |
Mechanical Properties:
The mechanical properties of ASTM A269 stainless steel metal tube depend on the steel grade and the manufacturing process. The table below shows the typical mechanical properties of the tubing:
| Steel Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Hardness (HRB) |
| 304 | ≥515 | ≥205 | ≥35 | ≤90 |
| 304L | ≥485 | ≥170 | ≥35 | ≤90 |
| 316 | ≥515 | ≥205 | ≥35 | ≤90 |
| 316L | ≥485 | ≥170 | ≥35 | ≤90 |
Steel Grade:
ASTM A269 stainless steel metal tube is available in steel grades such as 304, 304L, 316, and 316L.
Application:
ASTM A269 stainless steel metal tube is widely used in various industries such as chemical, petrochemical, food processing, pharmaceutical, aerospace, and marine industries. It is commonly used for hydraulic and instrumentation tubing, heat exchangers, and condenser tubes.
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ASTM A269 Welded Stainless Steel Tubing Metal Tube For Heat Exchangers Images
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