ASTM A249 TP321 Bright Annealed Boiler Welded Tube

What is ASTM A249 standard?
ASTM A249 specification covers nominal-wall-thickness welded tubes and heavily cold worked welded tubes made from the austenitic steels. More specifically, the ASTM A249 specification is intended for uses such as boiler,superheater,heat exchanger,condenser tubes.

 

ASTM A249 TP321 stainless steel welded pipes (bright annealed boiler tubes) supplied by GNEE contain elements such as 17–19% chromium, 9–12% nickel, 2–3% silicon, a minimum of 0.04% phosphorus, 0.30% manganese, and 0.075% niobium. These pipes exhibit excellent corrosion resistance, heat resistance, high and low-temperature strength, as well as outstanding weldability.

 

The ASTM A249 TP321 stainless steel heat exchanger tubes offer good workability, suitable for stamping and cold working, and demonstrate superior weldability. Additionally, TP321 heat exchanger tubes possess relatively strong oxidation resistance, enabling them to withstand atmospheric corrosion in air and water vapor corrosion in humid environments. They also provide excellent resistance to heat and humidity aging, making them suitable for demanding applications such as automotive components, parts, and heat exchangers.

 

ASTM A249 TP321 Stainless Steel Heat Exchanger Tube Specification:

	A 249
	SA 249
	ASTM A249 TP 321 Stainless Steel Welded Tubes
	6NB to 1200NB - SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
	Draw & Expansion as per required Size & Length Polish (Electro & Commercial) Heat Treatment Bending Annealed & Pickled Sand Blasting Machining Etc.
	ASTM A 269/A 213/ASME SA 213 / EN 10216-5/EN 10305 / NACE MR0175/PED 97/23 EC
	650℃ / 1205℃F

 

							P	C	S
321		Bal.	17	9	-	-	-	-	-	-
		-	20	13	2	0.75	0.03	0.08	0.04	0.04

 

515 min	205 min	35 min	90 max

 

ASTM A249 TP321

TP321	S32100	1900 ℃F [1040 ℃] C	Quenched in water or rapidly cooled by other methods.

 

1 Quantity (feet, metres, or number of lengths),

2 Name of material welded tubes (WLD) or heavily cold worked tubes (HCW),

3 Grade (TP321),

4 Size (outside diameter and nominal wall thickness),

5 Length (specific or random),

6 Test report required (see Certification Section of Specification A 1016/A 1016M),

7 Specification designation, and

8 Special requirements and any supplementary requirements selected.

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