Alloy 800H Pipe

1. Standard: ASTM B407、ASTM B514、ASTM B515
2. Diameters: 0.5 - 1219.2 mm
3. Wall thickness: 0.5 to 50mm
4. Equivalent: UNS N08810, Din 1.4958, Incoloy 800H

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Product Introduction

Alloy 800H pipe, offer excellent performance in high temperature environments, with low carbon content to resist oxidation and creep. Incoloy 800h seamless pipes are cold drawn, so properties such as toughness and hardness tend to be much superior. Inconel 800h welded pipes are better suited for larger diameter pipes and are less expensive. Incoloy 800h pipes are produced to ASTM B407 specifications and are available in either cold or hot worked forms. Contact us for more information and a free quote!

Alloy 800h Special Metals Standard:

ASTM B407: Standard Specification for Nickel-Iron-Chromium Alloy Seamless Pipe and Tube

ASTM B514: Standard Specification for Welded Nickel-Iron-Chromium Alloy Pipe

ASTM B515 Standard Specification for Welded Nickel-Iron-Chromium Alloy Tubes

Alloy 800H Pipe (UNS N08810) Chemical Composition, %

Ni	Cr	Fe	C	Al	Ti	Al+Ti
30.0-35.0	19.0-23.0	39.5 min	.05-.10	.15-.60	.15-.60	.30-1.20

Mean Coefficient of Thermal Expansion Temperature Range

°F	°C	in/in/°F	cm/cm°C
200	93	7.9 x 10-6	14.4 x 10-6
400	204	8.8 x 10-6	15.9 x 10-6
600	316	9.0 x 10-6	16.2 x 10-6
800	427	9.2 x 10-6	16.5 x 10-6
1000	538	9.4 x 10-6	16.8 x 10-6
1200	649	9.6 x 10-6	17.1 x 10-6
1400	760	9.9 x 10-6	17.5 x 10-6
1600	871	10.2 x 10-6	18.0 x 10-6

Alloy 800H vs. Alloy 800HT

Service Temperature Range: Alloy 800H has a lower carbon content for medium temperature ranges, performing well in the range of about 600-900°C. Alloy 800HT has a higher carbon content for higher temperature ranges up to about 700-1000°C.
Creep Properties: Alloy 800h seamless pipe has less creep resistance than Incoloy 800HT at high temperatures and high stresses.

ASTM B407 UNS N08810 Tube Applications

Valves, fittings, and other components exposed to corrosion at 1100-1800° F
Industrial furnaces
Heat treating equipment
Chemical and petrochemical processing
Superheaters and reheaters in power plants
Pressure vessels
Heat exchangers

ASME SB 407 UNS N08810 Hot Working

Hot working temperature range for Incoloy alloy 800H is 1740–2190° F if the deformation is 5% or greater. The hot working temperature range is 1560–1920° F if the degree of hot deformation is less than 5%. 800H is water quenched or rapidly air cooled in the temperature range of 1000–1400° F. Solution annealing is performed after hot working to ensure optimum creep resistance and performance.