Grade 304/304L Stainless Steel Instrumentation Tubing, 1/2'' X 0.035'' Welded ASTM A249/A269
TECHNICAL SPECS:
Item: Tubing
Type: Welded
Inside Dia. 0.035"
Outside Dia. 3/8"
Length 6 ft.
Wall Thickness: (In.)0.035
Outside Dia. Tolerance: +.005"/-0.005"
Material: 304 Stainless Steel
Max. Pressure (PSI): 2936 psi @ 72 Degrees F
Temp. Range: -423 to 1500 Degrees F
Standards: Meets ASTM 269
Alloys 304 (S30400) and 304L (S30403) stainless steels are variations of the 18 percent chromium – 8 percent nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family.
High strength, excellent corrosion resistance and minimized carbon content make Alloy 304 and 304L Stainless Steels useful for applications where welding is required. Uses include architectural mouldings and trim, welded components of chemical, textile, paper, pharmaceutical and chemical industry processing equipment.
Other advantages are its resistance to oxidation, excellent formability, ease of fabrication and cleaning, excellent strength to weight ratio and good toughness at cryogenic temperatures.
For severely corrosive environments,the lower content of Type 304L is preferred because of its greater immunity to intergranular corrosion.
Mechanical Properties
| Temper | 304 | 304L |
| Tensile Rm | 76 | ksi (min) | 70 | ksi (min) |
| Tensile Rm | 517 | MPa (min) | 485 | MPa (min) |
| R.p. 0.2% Yield | 31 | ksi (min) | 25 | ksi (min) |
| R.p. 0.2% Yield | 207 | MPa (min) | 170 | MPa (min) |
| Elongation (2" or 4D gl) | 40 | % (min) | 40 | % (min) |
Physical Properties (Room Temperature)
| Specific Heat (0-100°C) | 500 | J.kg-1.°K-1 |
| Thermal Conductivity | 16.2 | W.m -1.°K-1 |
| Thermal Expansion | 17.2 | mm/m/°C |
| Modulus Elasticity | 19.3 | GPa |
| Electrical Resistivity | 7.23 | μohm/cm |
| Density | 8.0 | g/cm3 |
Chemical Composition (% by weight)
| | 304 | 304L |
| Element | Min | Max | Min | Max |
| C | - | 0.08 | - | 0.08 |
| Mn | - | 2 | - | 2 |
| Ni | 8 | 10.5 | 8 | 12.0 |
| Cr | 18 | 20 | 18 | 20 |
| S | - | 0.03 | - | 0.03 |
| N | - | 0.1 | - | 0.1 |
| Si | - | 0.75 | - | 0.75 |
| P | - | 0.045 | - | 0.045 |
| Metric | Imperial |
| O/D | Wall | O/D | Wall | O/D | Wall |
| (mm) | (mm) | (in) | (swg) | (in) | (swg) |
| 6 | 1.0 | 1/8 | 25 | 5/8 | 20 |
| 8 | 1.0 | 3/16 | 22 | 5/8 | 18 |
| 10 | 1.0 | 1/4 | 20 | 5/8 | 16 |
| 10 | 2.0 | 1/4 | 18 | 3/4 | 20 |
| 12 | 1.0 | 1/4 | 16 | 3/4 | 18 |
| 15 | 1.0 | 5/16 | 20 | 3/4 | 16 |
| 15 | 1.5 | 3/8 | 20 | 7/8 | 18 |
| 15 | 2.0 | 3/8 | 18 | 1 | 18 |
| 18 | 1.5 | 3/8 | 16 | 1 1/4 | 18 |
| 25 | 1.5 | 1/2 | 18 | 2 | 16 |
| 50 | 2.0 | 1/2 | 16 | | |
Available tube product forms
Straight
Coiled
Seamless
Seam welded and cold redrawn
Seam welded, cold redrawn and annealed
Typical Applications
Moisture seperator reheaters
Feedwater tubes
Stator bars
Heat exchangers
Product Tags:
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Instrumentation SS Hydraulic Tubing 1/2'' X 0.035'' Welded ASTM A249/A269 Images
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