ASTM A249 TP304 Stainless Steel Tube
ASTM A249 TP304 stainless steel pipe has the following advantages:
1. Strong corrosion resistance: ASTM A249 TP304 stainless steel pipe is made of high-quality stainless steel material, which has good corrosion resistance and can withstand the corrosion of various chemical media.
2. Good high temperature resistance: ASTM A249 TP304 stainless steel pipe has excellent high temperature resistance, after high temperature treatment, its mechanical strength and corrosion resistance have been enhanced.
3. High surface finish: ASTM A249 TP304 stainless steel pipe surface after fine polishing treatment, high finish, not easy to accumulate dirt and bacteria, easy to clean, with good hygiene performance.
4. High strength: ASTM A249 TP304 stainless steel pipe has high tensile strength, can withstand a certain external pressure and tension, and has good compressive strength.
5. Economic and practical: ASTM A249 TP304 stainless steel pipe has a high cost performance, compared with copper pipe, titanium pipe and other metal pipes, the price is more reasonable, economic and practical.
In general, ASTM A249 TP304 stainless steel pipe has many advantages such as good corrosion resistance, good high temperature resistance, high surface finish, high strength, economic and practical, and has been widely used in chemical, petroleum, aerospace, food and other fields.
ASTM A249 TP304 Stainless Steel Tube Specifications
| Standard | ASTM A249 |
|---|---|
| Material | TP304 |
| Tube Type | Welded Tube |
| Finishes | Annealing Pickling, Bright Annealing |
| Outside Diameter | 6 Up To 304.8 Mm |
| Thickness | 0.5 Up To 6 Mm |
| Application | Heat Exchanger System |
ASTM A249 TP304 Chemical Composition
| Grade | C | Si | Mn | Cr | Ni | S | P | Fe |
|---|---|---|---|---|---|---|---|---|
| TP304 | 0,08 | 1,0 | 2 | 18 – 20 | 8 – 11 | 0,03 | 0,045 | Bal. |
ASTM A249 TP304 Mechanical Properties
| Grade | Tensile Strength (Mpa) | Yield Point (Mpa) | Elongation (%) |
|---|---|---|---|
| TP304 | 515 | 205 | 35 |
Cold Working
After welding, inside and outside of tube most be forged to achieve high integrity, then have a correct properties, and also possess precise dimensions.
Heat Treatment
Annealing is a very important process, tubes are heated to required solution temperature and rapidly cooling, ASTM A249 TP304 stainless steel requires minimum solution temperature is 1040 degree, it can restabilize microstructure to ensure premium properties.
Bright Annealing Option
Bright annealing welded tube is often required, tube pass through in closed furnace, inserting hydrogen gas to isolate surrounding atmosphere, finally forming a passive oxide film on the surface.
ASTM A249 TP304 Stainless Steel Tubes Sizes
We offer a large sizes and dimensions for heat exchanger tubes, common sizes are provided below, and others are available.
| Outside Diameter | 12.7, 15.88, 19.05, 25.4, 31.8, 38.1, 45, 50.8, 60.3, 76.2 Mm |
|---|---|
| Wall Thickness | 0.51, 0.71, 0.89, 1.0, 1.25, 1.65, 2.11, 2.77, 3.05 Mm. |
Dimensional Inspection
| OD | WTH | L | |
|---|---|---|---|
| ＜25.40 Mm | ±0.10 Mm | ±10.00% | OD＜50.8 Mm +3.0 Mm -0 Mm OD≥50.8 Mm +5.0 -0 Mm |
| ≥25.4 ~ 38.1 Mm | ±0.15 Mm | ||
| ≥38.1 ~ 50.8 Mm | ±0.20 Mm | ||
| ≥50.8 ~ 63.5mm | ±0.25 Mm | ||
| ≥63.5 ~ 76.2 Mm | ±0.30 Mm | ||
| ≥76.2 ~ 101.6 Mm | ±0.38 Mm | ||
| ≥101.6 ~ 190.5 Mm | +0.38 -0.64 Mm | ||
| ≥190.5 ~228.6 Mm | +0.38 -1.14 Mm | ||
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