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ASTM A213/ASME SA213 TP304/304L 1.4301/1.4307 Stainless Steel Heat Exchanger Tube
Overview:
Grade 304 is the standard "18/8" stainless; it is the most versatile and most widely used stainless steel, available in a wider range of products, forms and finishes than any other. It has excellent forming and welding characteristics. The balanced austenitic structure of Grade 304 enables it to be severely deep drawn without intermediate annealing, which has made this grade dominant in the manufacture of drawn stainless parts such as sinks, hollow-ware and saucepans. for these applications it is common to use special "304DDQ" (Deep Drawing Quality) variants. Grade 304 is readily brake or roll formed into a variety of components for applications in the industrial, architectural, and transportation fields. Grade 304 also has outstanding welding characteristics. Post-weld annealing is not required when welding thin sections.
Grade 304L, the low carbon version of 304, does not require post-weld annealing and so is extensively used in heavy gauge components (over about 6mm). Grade 304H with its higher carbon content finds application at elevated temperatures. The austenitic structure also gives these grades excellent toughness, even down to cryogenic temperatures.
Specification:
| Standard | ASTM A213 & Its equivalent ASME, DIN & EN Standard |
|
Material |
TP304/304L;1.4301/1.4307 |
| Outside Diameter | 1/2'' to 2'' or custom size |
| Thickness | 25BWG 22BWG 20BWG 18BWG 16BWG 14BWG 12BWG 10BWG |
| Length | 6m or specified length as customed |
| Type | Seamless |
| End | Plain End, Beveled End |
| Package | Plywood case/Woven bag in bundle |
Chemical Composition:
| Grade | C | Mn | P | S | Si | Cr | Ni |
| TP304 | 0.08 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 18.0-20.0 | 8.0-11.0 |
| TP304L | 0.035 max | 2.00 max | 0.045 max | 0.03 max | 1.00 max | 18.0-20.0 | 8.0-12.0 |
Mechanical Properties:
|
Grade |
Density g/cm³ |
Tensile Strength, min, ksi (MPa) |
Yield Strength, ksi (MPa) |
Elongation in 2 in. or 50mm, min (%) |
Hardness Brinell/Vickers |
Solutioning Temperature min or range °F(°C) |
| TP304 | 7.93 |
75(515) |
30(205) |
35 |
192 HBW/200 HV | 1900(1040) |
| TP304L | 7.93 | 70(485) | 25(170) | 35 |
192 HBW/200 HV |
1900(1040) |
Applications:
1.Food processing equipment, particularly in beer brewing, milk processing & wine making.
2.Kitchen benches, sinks, troughs, equipment and appliances
3.Architectural panelling, railings & trim
4.Chemical containers, including for transport
5.Heat Exchangers
6.Woven or welded screens for mining, quarrying & water filtration
7.Threaded fasteners
8.Springs
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