ASTM B677 904L Stainless Steel pipe for Heat Exchangers

If you are looking for ASTM B677 904L stainless steel pipes for heat exchangers that offer high corrosion resistance, high pressure resistance, and suitability for high-temperature applications, we can provide you with a comprehensive range of reliable industrial-grade pipe solutions, specifically designed for chemical, petrochemical, and high-end energy equipment.

 

Our ASTM B677 904L stainless steel pipes are manufactured using advanced seamless or resistance welding processes, resulting in uniform wall thickness, high dimensional accuracy, and smooth inner and outer surfaces for easy installation and subsequent processing.  904L stainless steel pipes have a PREN value of ≥40, with a corrosion rate of only 0.12-0.15 mm/year in 20% sulfuric acid at 80°C, which is 3.3-5.4 times more corrosion resistant than 316L. In weakly acidic media with high chloride ion content (20000 ppm), the corrosion rate is ≤0.3 mm/year, effectively preventing intergranular corrosion and stress corrosion cracking. They are widely used in chemical and petrochemical heat exchangers, pharmaceutical equipment, seawater desalination systems, high-temperature and high-pressure pipelines, and corrosive media transportation systems.

 

 

GNEE offers a full range of ASTM B677 UNS N08904 seamless heat exchanger tubes, with outer diameters covering 9.52-119mm and wall thicknesses of 0.8-12.7mm. Custom lengths of 3-6m are available. These pipes are perfectly suited for shell-and-tube and plate heat exchangers. Each finished product undergoes hydrostatic testing and eddy current testing. Outer diameter tolerances are controlled within ±0.38mm, and the inner wall is smooth and free of impurities, resulting in a 15% increase in heat exchange efficiency. Each batch comes with an MTC material certificate, ensuring the long-term stable operation of heat exchange equipment.

 

Material Equivalent of ASTM B677 TP 904L Tubing

STANDARD	WERKSTOFF NR.	UNS	JIS	BS	KS	AFNOR	EN
SS 904L	1.4539	N08904	SUS 904L	904S13	STS 317J5L	Z2 NCDU 25-20	X1NiCrMoCu25-20-5

 

Chemical Equation of UNS N08904 Electropolish Tube

Grade	C	Mn	Si	P	S	Cr	Mo	Ni	Cu
SS 904L	0.020 max	2.00 max	1.00 max	0.040 max	0.030 max	19.00 - 23.00	4.00 - 5.00 max	23.00 - 28.00	1.00 - 2.00

 

Mechanical Characteristics of B677 TP 904L High Pressure Tube

Density	Melting Point	Tensile Strength	Yield Strength (0.2%Offset)	Elongation
7.95 g/cm3	1350 °C (2460 °F)	Psi - 71000 , MPa - 490	Psi - 32000 , MPa - 220	35 %

 

Pressure Rating of SS 904L Tube

OD (inch)	WT (inch)
	.083	.035	.065	.109	.049	.095	.120	.028
-	(psig) Working Pressure
1/8	-	10100	-	-	-	-	-	7900
1	2900	-	2200	3900	-	3400	4300	-
5/16	-	3700	7300	-	5400	-	-	-
1/4	-	4800	9500	-	7000	-	-	3700
3/8	-	3100	6100	-	4400	-	-	-
3/4	4000	-	3000	-	2200	4600	-	-
1/2	-	2300	4400	-	3200	-

 

UNS N08904 Seamless Tube Sizes in Stock

Size	Type	Thickness
1/8" OD TO 2"OD 3MM OD TO 38 MM OD	Stainless Steel 904L Seamless, ERW, Welded, Fabricated, LSAW Tubes	1MM TO 3 MM 0.028 TO 0.156 IN

 

 GNEE supplies seamless ferritic and austenitic alloy steel boiler, superheater, and heat exchanger tubes conforming to ASTM A213 standards, widely used in various industries. In addition to 904L stainless steel, we also offer 304/304L, 316/316L, 321/321H, 347/347H, and duplex stainless steel. 317/317L seamless tubes are manufactured from stainless steel billets through cold drawing and cold rolling processes, followed by heat treatment and other procedures to produce seamless tubes according to specifications. For specific applications, we can provide U-bent tubes and bright annealed finished tubes upon request.

 

*Test Certificates: Factory test certificate, third-party inspection report, and raw material certificate
Delivery Time: In-stock items ship immediately, customized products have a delivery time of 15-30 days
*Value-added Services: Pre-treatment, parts cutting, third-party inspection, sample service, ultrasonic testing, and dimensional inspection