Nickel and Nickel Alloy Seamless Tube Condenser and Heat Exchanger Tubes ASTM B163 N08810 ASTM B163 UNS N08800、UNS N08810、UNS N08811、UNS N08825

Nickel Alloy Tube Testings:

Chemical Analysis

Mechanical Properties

Grain Size—A transverse sample representing full-wall thickness of annealed alloys UNS N08810 shall conform to an average grain size of ASTM No. 5 or coarser.
Hardness test—When annealed ends are specified for tubing in the stress-relieved condition (see Table 3), the hardness of the ends after annealing shall not exceed the values specified in Table 3.

Flare test—A flare test shall be made on one end of 1 % of the number offinished tube lengths from each lot.
The flare test shall consist of flaring a test specimen with an expanding tool having an included angle of 60° until the specified outside diameter has been increased by 30 %. The flared specimen shall not exhibit cracking through the wall.

Hydrostatic or Nondestructive Electric Test—Each tube shall be subjected to either the hydrostatic test or the nonde-structive electric test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

Hydrostatic Test:
Each tube with an outside diameter 1 ⁄ 8in. (3.2 mm) and larger and tubes with wall thickness of0.015 in. (0.38 mm) and over shall be tested by the manufacturer to an internal hydrostatic pressure of 1000 psi (6.9 MPa) provided that the fiber stress calculated in accordance with the following equation does not exceed the allowable fiber stress, S, indicated below. The tube shall show no evidence of leakage.

t = minimum wall thickness, in. (mm); equal to the specified average wall minus the permissible “minus” wall tolerance, Table 4 and Table X2.2, or the specified minimum wall thickness, and
D = outside diameter of the tube, in. (mm).
When stress-relieved tubes with annealed ends are to be tested hydrostatically, such pressure testing shall be done prior to annealing of the ends of the tube.

The Incoloy 800 / 800H / 800HT /825 Pipes and Tubes is used in the following applications:

• Sulphuric acid piping and vessels
• Phosphoric acid evaporators
• Pickling tank heaters, pickling tanks and equipment
• Chemical process equipment
• Propellor shafts
• Tank trucks
• Calorifiers
• Electrostatic precipitator electrodes
• Hot vessels for food, water and seawater,
• ammonium sulphate vessels
• Expansion bellows
• Marine exhaust systems
• Power station ash hoppers
• Ethylene furnace quench boilersHydrocarbon cracking Valves, fittings and other components exposed to corrosive attack from 1100-1800° F
• Industrial furnaces
• Heat-treating equipment
• Chemical and petrochemical processing
• Super-heater and re-heaters in power plants
• Pressure vessels
• Heat exchanger