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:

Standards	Welded Tube
ASTM	A 249
ASME	SA 249
Product Name	ASTM A249 TP 321 Stainless Steel Welded Tubes
Range	6NB to 1200NB - SCH. 5, 10, 20, 30, 40, 60, 80, 100, 120, 140, 160, XXS.
In Form of	Round, Square, Rectangle, Oval, Coil, Flexible Pipe, Shaft, 'U' Shape, Hydraulic pipe, Honed Tubes
In Length of	Standard & Cut length
Special Pipes	Fabricated Pipe (with radiography)
Value Added Service	Draw & Expansion as per required Size & Length Polish (Electro & Commercial) Heat Treatment Bending Annealed & Pickled Sand Blasting Machining Etc.
Specialize	Fabricated Pipe Square & Rectangle & Other Odd Size
Specification:	ASTM A 269/A 213/ASME SA 213 / EN 10216-5/EN 10305 / NACE MR0175/PED 97/23 EC
Maximum service temperature:	650°C / 1205°F

 

Chemical details:

Technical composition (%)		Fe	Cr	Ni	Mn	Si	P	C	S	Ti
321	min	Bal.	17	9	-	-	-	-	-	-
	max	-	20	13	2	0.75	0.03	0.08	0.04	0.04

 

Mechanical properties:

Tensile Strength, Mpa	Yield Strength, Mpa	Elongation, %	Hardness, HRB
515 min	205 min	35 min	90 max

 

Heat Treatment of ASTM A249 TP321

Grade	UNS Number	Solutioning Temperature, min or range	Quenching Method
TP321	S32100	1900 °F [1040 °C] C	Quenched in water or rapidly cooled by other methods.

 

Ordering Information

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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