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ASTM A249 TP304 Bright Annealed Stainless Steel Welded Tube Heat Exchanger Tube
ASTM A249 is a standard specification for welded austenitic stainless steel such as TP304/ 304L/ 316L ... tubing intended for use in boilers, heat exchangers, and similar applications. The tubing is produced by a welding process, usually using a continuous welding method. This results in a smooth interior surface, which is important for flow characteristics in heat equipments. ASTM A249 includes specific testing requirements to ensure the integrity of the tubing. This can include hydrostatic testing, eddy current testing, and non-destructive testing methods to check for leaks and other defects.
ASTM A249 TP304 Stainless Steel Welded Tube Equivalent Grades
JIS | ASTM | UNS | ISO | DIN EN/DIN | W-Nr. | EN | GOST | BS EN/BS |
SUS 304 | 304 | S30400 | X5CrNi 18-10 | X5CrNi 18-10 (X5CrNi 18-9) | 1.4301 | X5CrNi 18-10 | 08Х18Н10 | 304S15 |
ASTM A249 TP304 Stainless Steel Welded Tube 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 Stainless Steel Welded Tube Mechanical Properties
Heat treatment/ condition | Tensile Strength Mpa | Yield Point σs Mpa | Elongation δ % | HBW |
---|---|---|---|---|
Solutioning Temperature 1040℃ | ≥515 | ≥205 | ≥35 | HRB ≤90 |
Dimensional Tolerences
Size OD | Nominal Wall | Outside Diameter | Length | Wall |
1/2" (12.7) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
3/4" (19.1) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
1" (25.4) | 0.065" (1.65)/0.049" (1.25) | +/-0.005 (0.13) | +1/8" (3.18) - 0 | +/-10.0% |
1-1/2" (38.1) | 0.065" (1.65)/0.049" (1.25) | +/-0.008" (0.20) | +1/8" (3.18) - 0 | +/-10.0% |
2" (50.8) | 0.065" (1.65)/0.049" (1.25) | +/-0.008" (0.20) | +1/8" (3.18) - 0 | +/-10.0% |
2-1/2" (63.5) | 0.065" (1.65) | +/-0.010" (0.25) | +1/8" (3.18) - 0 | +/-10.0% |
3" (76.2) | 0.065" (1.65) | +/-0.010" (0.25) | +1/8" (3.18) - 0 | +/-10.0% |
4" (101.6) | 0.083" (2.11) | +/-0.015" (0.38) | +1/8" (3.18) - 0 | +/-10.0% |
6" (152.4) | 0.083" (2.11) | +/-0.030" (0.76) | +1" (25.4) - 0 | +/-10.0% |
6" (152.4) | 0.109" (2.77) | +/-0.030" (0.76) | +1" (25.4) - 0 | +/-10.0% |
8" (203.2) | 0.109" (2.77) | +0.061" (1.55)/-0.031" (0.79) | +1" (25.4) - 0 | +/-10.0% |
Why Choose ASTM A249 TP304 stainless steel welded tube instead of ASTM A213 TP304 stainless steel seamless tube?
1. Cost-Effectiveness
2. Availability and Lead Time
3. Mechanical Properties
4. Pressure and Temperature Ratings
Applications