Bright Surface ASTM B729 N08020 Nickel Alloy Pipes for High-Pressure and High-Temperature Environments

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical
• Standard: JIS, GB, DIN, BS, ASTM, AISI
• Model NO.: ASTM B729 N08020
• Purity: 30~35%
• Alloy: Alloy
• Type: Nickel Pipe
• Powder: Not Powder
• Technique: Cold Drawn
• Surface Treatment: Annealed Pickled, Bright Annealed
• Section Shape: Round/Hollow
• Transport Package: Bundles/Wooden Box
• Specification: Alloy 20 N08020
• Trademark: GH-STEEL
• Origin: China
• HS Code: 7507120000
• Production Capacity: 1000ton Per Month

Product Description

Alloy 20 or carpenter 20 is an alloy that is classified under super austenitic stainless steel. Well-liked for general corrosive service, this stainless steel grade is highly rated by most Alloy 20 Tube suppliers. Primarily this alloy was developed as a means to counter corrosion problems associated with sulfuric acid. Unlike regular stainless steel and steel grades, the UNS N08020 Tube displays superior resistance to sulfuric acid, particularly when placed in aggressive environments, which could cause failure of the more conventional austenitic alloys.

Apart from sulfuric acid, Alloy 20 Seamless Tubing exhibits good resistance to general corrosion when exposed to applications that contain chlorides or acids like sulfuric acid and phosphoric acid. During the production of the alloy, some amount of niobium is added to it. Niobium has a stabilizing effect on the Carpenter 20 Tubing against sensitization as well as from the resultant decay by intergranular corrosion. The weldability properties are also superior of the Alloy 20 Welded Tubes. They could be furnished in any one of the following conditions - solution annealed condition or stabilized annealed condition or in an annealed condition. Testing the ASME SB 729 UNS N08020 tubes for elongation, yield and tensile strength is an important requirement. Moreover, each specimen or component belonging to the ASTM B729 UNS N08020 are subjected to tests like the hydrostatic test or a nondestructive electric test. The ease in fabrication, with excellent resistance to corrosion in combination with its magnified mechanical properties, makes the Alloy 20 Tubing a valued addition for applications like heat exchangers, Chemical and petroleum processing equipment or for several process-based industries.
 

1. Material	Steel Grade	UNS N08020 , Alloy 20
	Form	Round
	Standard	ASTM B729, ASME SB 729
2. Diameter	W.T	1mm-10mm
	Diameter	20mm thru 219mm
	Length	2m-12m, or customer required
4. Delivery  Condition	Polished Annealed and Pickled Hot Finished Bright Annealed Cold Drawn
5. End Types	Plain End  Beveled End Treaded
6. Packing	Ply Wooden Boxes PE Fabric Bundles Steel Strips Bundled Standard seaworthy export packing Plastic Bags, or as required
7. Test	Mill Test Certificates with all Alloy 20 Tube HS Code Commercial Invoice EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC) Non Destructive Test Reports Chemical Reports 100% inspection according to NACE standards PMI Test Reports Visual Inspection Reports Third Party Inspection for Alloy 20 Tubing 100% Radiography Test Report for Alloy 20 UNS N08020 Tube Laboratory Test Certificate from Govt. Approved Lab Heat Treatment Charts Surface roughness measurement Mechanical Reports
8. Delivery Time	For ready stock :7 days after receiving the deposit of T/T For MTO: 35 days after receiving the  deposit of T/T
9. Trade Terms	EXW FOB /FCA CFR CIF
10. Loading Port	Ningbo Wenzhou Shanghai

UNS N08020 Alloy20  Equivalent

ALLOY	UNS	WERKSTOFF NR.	AFNOR	EN	JIS	BS	GOST
Alloy 20	N08020	2.4660	Z2NCUD31-20AZ	NiCr20CuMo	-	-	-

Grades UNS N08020 Alloy20  Chemical Composition

UNS N08020	C(max)	Mn(max)	P(max)	S(max)	Si(max)	Ni	Cr	Mo	Cu	Nb+Ta	Fe
	0.07	2.00	0.045	0.035	1.00	32.00-38.00	19.00-21.00	2.00-3.00	3.00-4.00	8xC-1.00	Bal

UNS N08020 Alloy20  Mechanical Properties 

Density	Melting Point	Yield Strength (0.2%Offset)	Tensile Strength	Elongation
8.1 g/cm3	1443 °C (2430 °F)	Ksi - 35 , MPa - 240	Ksi - 80 , MPa - 550	30 %

SME SB A729  UNS N08020 Seamless Tube Permissible Variations

Permissible Variations for Outside Diameter and Wall Thickness of Seamless Cold-Worked Pipe and Tube
Nominal Outside Diameter,	Permissible Variations				Thickness of Specified Minimum Wall, %
	Outside Diameter,in. (mm)		Thickness of Specified Nominal Wall, %		Plus	Minus
in. (mm)	Plus	Minus	Plus	Minus
Over 0.400 (10) to 5/8 (16), excl	0.005 (0.13)	0.005 (0.13)	15	15	30	0
5/8 (16) to 1 1/2 (38), incl	0.0075 (0.19)	0.0075 (0.19)	10	10	22	0
Over 1 1/2 (38) to 3 (76), incl	0.010 (0.25)	0.010 (0.25)	10	10	22	0
Over 3 (76) to 4 1/2 (114), incl	0.015 (0.38)	0.015 (0.38)	10	10	22	0
Over 4 1/2 (114) to 6 (152), incl	0.020 (0.51)	0.020 (0.51)	12.5	12.5	28	0
Over 6 (152) to 6 5/8 (168), incl	0.025 (0.64)	0.025 (0.64)	12.5	12.5	28	0
Over 6 5/8 (168) to 8 5/8 (219), incl	0.031 (0.79)	0.031 (0.79)	12.5	12.5	28	0
Over 8.625 (219) to 14 (356), incl	0.062 (1.57)	0.031 (0.79)	15	12.5	30	0
Over 14 (356) to 24 (610), incl	0.125 (3.18)	0.031 (0.79)	15	12.5	30	0

 

Permissible Variations for Outside Diameter and Wall Thickness of Hot-Finished Tube
Nominal Outsider Diameter,	Permissible Variations
	Outside Diameter or Inside Diameter, in. (mm)		% of Thickness of Specified Nominal Wall		% of Thickness of Specific Minimum Wall
in. (mm)	Plus	Minus	Plus	Minus	Plus	Minus
3/4 (19) to 1 1/2 (38), incl	0.015 (0.4)	0.031 (0.8)	12.5	12.5	28.5	0
Over 1 1/2 (38.1) to 4 (102), incl	0.031 (0.8)	0.031 (0.8)	12.5	12.5	28.5	0
Over 4 (102) to 9 1/4 (235), incl	0.062 (1.6)	0.031 (0.8)	12.5	12.5	28.5	0

 

Permissible Variations for Outside Diameter and Wall Thickness of Seamless Hot-Worked Pipe
Nominal Outsider Diameter,	Permissible Variations
	Outside Diameter,in. (mm)		Thickness of Specified Nominal Wall, %		Thickness of Specified Minimal Wall, %
in. (mm)	Plus	Minus	Plus	Minus	Plus	Minus
1 (25) to 1.900 (48), incl	0.015 (0.40)	0.031 (0.79)	16	12.5	28.5	0
over 1.900 (48) to 4 1/2 (114), incl	0.031 (0.79)	0.031 (0.79)	16	12.5	28.5	0
over 4 1/2 (114) to 6 1/2 (165), incl	0.047 (1.2)	0.047 (1.2)	16	12.5	28.5	0
over 6 1/2 (165) to 9 1/4 (235), incl	0.062 (1.6)	0.062 (1.6)	16	12.5	28.5	0

 

Permissible Variations in Length
Outside Diameter, in. (mm)	Cut Length, in. (mm)
	Over	Under
Under 2 (50.8)	1/8 (3.2)	0
2 (50.8) and over	3/16 (4.8)	0

 

 

 

 

*All of our nickel alloy seamless pipes and tubes are packaged according to international standards to prevent any possible damage or loss. By default, we will use thick woven plastic bags to bundle the finished pipes together in batches.
For some special pipes and tubes that are vulnerable to dirt, scratches, stress, or rough handling, we will suggest using wooden cases for protection. Please note that wooden cases may incur extra costs not only for the case itself but also for increased freight costs, especially when using air transportation. To enhance customer experience, we also provide dedicated packaging according to your specific requirements."

• Hydrocarbon cracking
• Industrial furnace and boiler components and equipment
• Equipment for Heat-Treating
• Pressure vessels and heat exchangers
• Chemical and Petrochemical processing

Positive Material Identification (PMI)	Guohao Steel can perform PMI testing in house for most stainless steel grades, or we can work with independent labs to complete PMI in order to meet customer specifications.
Testing	In some cases, HT/ET/UT testing of the stainless steel pipes may be required. We can assist you with this requirement.

 
Q1:How many countries you already exported ?
A1:Exported to more than 30 countries mainly from America, Russia, Ukraine, Vietnam, Egypt, Iran, Turkey, Mexico etc.
Q2:How can I get some samples?
A2:Small samples in store and can provide the samples for free. Catalogue is available, most patterns we have ready samples in stock. Customized samples will take about 5-7days.
Q3:Do you have any MOQ limit for stainless steel products order? 
A3: MOQ, 1pc for ready stock of stainless steel seamless pipe. MOQ :1 tons for MTO.
Q4. How do you ship the goods and how long does it take to arrive?
A: We usually ship by DHL, UPS, FedEx or TNT. It usually takes 3-5 days to arrive. Airline and sea shipping also optional. For mass products, ship freight is preferred.
Q5:How does your company do regarding quality control?
A5:Mill Test Certificate is supplied with shipment. If needed, a Third Party Inspection is acceptable or SGS.
Q6: Is it OK to print my logo on products??
A7: Yes. OEM and ODM are available for us.