ASTM A269 TP316L, SUS316L, 1.4404 BA Stainless Steel Seamless Tube, Heat Exchanger Tube
ASTM A269 TP316L, SUS316L, 1.4404 BA Stainless Steel Seamless Tube, Heat Exchanger Tube
The ASTM A269 specification covers nominal-wall-thickness, seamless and welded austenitic steel tubing for general corrosion-resisting and low- or high-temperature service. Upon completion, all material shall:
- shall be furnished in the heat-treated condition.
- conform to the chemical composition requirements.
- different mechanical test requirements that includes, flaring test, flange test, hardness test, and reverse flattening test are presented.
- shall be subjected to the non-destructive electric test or the hydrostatic test
Mechanical Properties:
|
Grade
|
Tensile Str
(MPa) min |
Yield Str
0.2% Proof (MPa) min |
Elong
(% in 50mm) min |
Hardness
|
|
|
Rockwell B (HR B) max
|
Brinell (HB) max
|
||||
|
316
|
515
|
205
|
40
|
95
|
217
|
|
316L
|
485
|
170
|
40
|
95
|
217
|
Physical Properties:
|
Grade |
Density |
Elastic Modulus |
Mean Co-eff of Thermal Expansion (m/m/0C) |
Thermal Conductivity |
Specific Heat 0-1000C |
Elec Resistivity |
|||
|
0-1000C |
0-3150C |
0-5380C |
At 1000C |
At 5000C |
|||||
|
TP316L |
8000 |
193 |
15.9 |
16.2 |
17.5 |
16.3 |
21.5 |
500 |
740 |
Corrosion Resistance:
Excellent in a range of atmospheric environments and many corrosive media - generally more resistant than 304. Subject to pitting and crevice corrosion in warm chloride environments, and to stress corrosion cracking above about 600C. Considered resistant to potable water with up to about 1000mg/L chlorides at ambient temperatures, reducing to about 500mg/L at 600C.
TP316L is usually regarded as the standard €œmarine grade stainless steel", but it is not resistant to warm sea water. In many marine environments TP316L does exhibit surface corrosion, usually visible as brown staining. This is particularly associated with crevices and rough surface finish.
Heat Treatment: Solution Treatment (Annealing) - Heat to 1010-11200C and cool rapidly. These grades cannot be hardened by thermal treatment.
Types of Packaging:
Bundles (hexagonal)
Wooden Boxes
Crates (steel/wooden)
Special crates for U-Bend tubes with each radius separated
Packaging for SS 316L ASTM A269 Seamless Pipe as per customer's requirements
Special Features:
•- Each bundle covered with plastic for protection against extreme weather.
•- End of SS 316L ASTM A269 Seamless Pipe protected by plastic caps.
•- Bundles strapped with plastic strips.
•- Each radius of U-Bend tube separated by a separator.
•- Packaging list (laminated) placed with box/crate.
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