ASTM B163 UNS N08810 Bright Annealed Nickel Alloy Tube

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional manufacturers and suppliers of astm b163 uns n08810 bright annealed nickel alloy tube in China. With abundant experience, we warmly welcome you to wholesale customized astm b163 uns n08810 bright annealed nickel alloy tube from our factory. For price consultation, contact us.

 

ASTM B163 UNS N08810 Bright Annealed Tube Manufacturer

GNEE Stainless Steel is a specialized supplier of nickel-based alloy heat exchanger tubes. We offer UNS N08810 tubing with an outside diameter of 3 inches (76.2 mm) or less, featuring a minimum wall thickness of 0.148 inches (3.76 mm) or less (or an average wall thickness of 0.165 inches/4.19 mm or less), and support services such as cut-to-length and custom U-bend fabrication.

Our ASTM B163 UNS N08810 alloy tubes are manufactured using a process that combines hot extrusion with multi-pass precision cold drawing; single-pass deformation is controlled between 18% and 28% to refine the grain structure. The final bright annealing process is conducted in a pure hydrogen protective atmosphere at 1050–1120°C, followed by rapid, controlled cooling to eliminate residual processing stresses. The tubes are supplied in the annealed condition, with grain size controlled to ASTM No. 5 or coarser.

In the annealed condition, ASTM B163 N08800 heat exchanger tubes exhibit a minimum tensile strength of 450 MPa, a yield strength of 170 MPa, and an elongation of 30%. While service temperatures are typically limited to 1100°F (593°C), they can reach 1500°F (815°C) or higher depending on stress levels.

 

Alloy 800H Chemical Composition (% by Weight)

Element	Nickel	Chromium	Iron	Carbon	Manganese	Silicon	Copper	Sulfur	Aluminum	Titanium
Minimum (%)	30.00	19.00	39.50	0.05	-	-	-	-	0.15	0.15
Maximum (%)	35.00	23.00	-	0.10	1.50	1.00	0.75	0.015	0.60	0.60

 

Mechanical Properties:

Property	Value
Tensile Strength	≥448 MPa (65 ksi)
Yield Strength (0.2% Offset)	≥172 MPa (25 ksi)
Elongation	≥30%
Grain Size	ASTM No. 5 or coarser (annealed condition)

 

 Alloy 800H Tubes equivalent Material 

UNS	ASTM	EN Steel No.	EN
N08810	800H	EN 10216-5 1.4959	X8NiCrAlTi32-21

 

ASTM B163 Nickel Alloy Tube Dimensional Tolerances

Material	Nominal Outside Diameter, in. (mm)	Permissible Variations A
		Outside Diameter, in. (mm		Wall Thickness,%
		+	−	Average Wall		Minimum Wall
				+	-	+	-
UNS N08810, UNS N08811, UNS N08801	1 ⁄ 2 to 5 ⁄ 8 (12.7 to 15.9), excl	0.005 (0.13)	0.005 (0.13)	12.5	12.5	25.0	0
	5 ⁄ 8 to 1 1 ⁄ 2 (15.9 to 38.1), incl	0.0075 (0.19)	0.0075 (0.19)	10.0	10.0	20.0	0
	over 1 1 ⁄ 2 to 3 (38.1 to 76.2), incl	0.010 (0.25)	0.010 (0.25)	10.0	10.0	22.0	0

 

What are the main differences between Alloy 800H and Alloy 800?

The carbon content of Alloy 800H (N08810) is strictly controlled within the 0.05–0.10% range; it offers higher creep strength and is specifically designed for high-temperature service above 600°C. In contrast, Alloy 800 (N08800) typically has a carbon content of ≤ 0.10% and requires high-temperature solution annealing.

 

What is the maximum operating temperature for Alloy 800H?

It is typically used in operating conditions ranging from 600°C to 950°C. Within this temperature range, it maintains excellent resistance to oxidation, carburization, and sulfidation.

What are the welding characteristics of Alloy 800H?

Alloy 800H has good weldability. Welding materials such as Alloy 82 (ERNiCr-3) or Alloy 617 (ERNiCrCoMo-1) are commonly used. Before welding, the weld joint area must be thoroughly cleaned to remove grease and moisture.

 

Alloy 800H pipe Applications

Heat exchanger tubes, condenser tubes, shell & tube heat exchangers

Petrochemical reformer furnace coils, high-temperature heating coils

Power plant superheater, reheater and auxiliary cooling system

Industrial furnace radiant tubes, heat treatment furnace components

Coal chemical, synthetic gas and high-temperature reaction pipeline systems

 

If you need assistance, please let me know the required outer diameter and wall thickness, as well as the industry or operating temperature environment in which the product will be used. I can help you determine the specifications or provide technical support.

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Alloy 800H Pipe price per kg

Alloy 800H (UNS N08810) pipe typically costs between $18 and $37 per kilogram globally, depending on whether it is seamless or welded, order volume, and specific dimensions. Bulk wholesale pricing can occasionally start around $1,180 to $2,400 per ton ($1.18 to $2.40 per kg is rare/low-end mill base, while real retail/stockist spot pricing generally tracks $18–$37/kg or $1,250–$3,000 per ton bulk).

 

 

Quality Control

Each steel pipe undergoes 100% eddy current testing in accordance with ASTM E426 and a hydrostatic test with a holding time of at least 10 seconds. Batch sampling tests include flattening tests, tensile tests, and PMI (Positive Material Identification). We provide Material Test Reports (MTR) compliant with EN 10204 3.1 and accept inspections by third-party agencies such as SGS, BV, and TÜV.

High-quality transport packaging

End Protection: Prevents deformation of the pipe ends and the ingress of moisture or impurities during transport.
Individual Plastic Sleeves: Each pipe is individually sleeved to prevent scratches caused by friction between pipes and to protect the surface finish following solution treatment.
Reinforced Fumigation-Free Plywood Cases: Heat exchanger tubes are typically long and thin-walled, requiring fully enclosed wooden cases. The cases must be equipped with U-shaped wooden supports or EPE foam padding to prevent the tubes from shifting or bending during transit.

 

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