This is an age-hardenable alloy of nickel-chromium-iron. The additions of titanium and aluminum enable it to be age-hardened while molybdenum and copper contents enhance resistance to corrosive media. Designed primarily for applications in the production of gas.
Chemical Analysis of ALLOY 800 UNS (N08800): Common Names: Incoloy 825, Nickelvac 825, Nicrofer 4221:
Aluminum: 0.15 - 0.5
Carbon: 0.03 max
Chromium: 19.5 - 23.5
Copper: 1.5 - 3
Manganese: 1 max
Molybdenum: 2.5 - 3.5
Nickel: 38 - 46
Niobium: 0.5 max
Silicon: 0.5 max
Sulphur: 0.03 max
Titanium: 1.5 - 2.4
It is used in the petroleum industry for applications such as gas well components, valves and tubing, as well as finding use in high-strength piping systems.
Conventional machining techniques used for iron based alloys may be used. This alloy does work-harden during machining and has higher strength and "gumminess" not typical of steels. Heavy duty machining equipment and tooling should be used to minimize chatter or work-hardening of the alloy ahead of the cutting. Most any commercial coolant may be used in the machining operations. Water-base coolants are preferred for high speed operations such as turning, grinding, or milling. Heavy lubricants work best for drilling, tapping, broaching or boring. Turning: Carbide tools are recommended for turning with a continuous cut. High-speed steel tooling should be used for interrupted cuts and for smooth finishing to close tolerance. Tools should have a positive rake angle. Cutting speeds and feeds are in the following ranges: For High-Speed Steel Tools For Carbide Tooling Depth Surface Feed Depth Surface Feed of cut speed in inches of cut speed in inches inches feet/min. per rev. inches feet/min. per rev. 0.250" 25-35 0.030 0.250" 150-200 0.020 0.050" 50-60 0.010 0.050" 325-375 0.008 Drilling: Steady feed rates must be used to avoid work hardening due to dwelling of the drill on the metal. Rigid set-ups are essential with as short a stub drill as feasible. Heavy-duty, high-speed steel drills with a heavy web are recommended. Feeds vary from 0.0007 inch per rev. for holes of less than 1/16" diameter, 0.003 inch per rev. for 1/4" dia., to 0.010 inch per rev. for holes of 7/8"diameter. Milling: To obtain good accuracy and a smooth finish it is essential to have rigid machines and fixtures and sharp cutting tools. High-speed steel cutters such as M-2 or M-10 work best with cutting speeds of 30-40 feet per minute and feed of 0.004"-0.006" per cutting tooth. Grinding: The alloy should be wet ground and aluminum oxide wheels or belts are preferred.
This alloy has good ductility and may be readily formed by all conventional methods. Because the alloy is stronger than regular steel it requires more powerful equipment to accomplish forming. Heavy-duty lubricants should be used during cold forming. It is essential to thoroughly clean the part of all traces of lubricant after forming as embrittlement of the alloy may occur at high temperatures if lubricant is left on.
Anneal at 1850 F for at least 2 hours at temperature, air cool.
Solution anneal at 1900 F to 1800 F and air cool. Aging is done at 1350 F for 8 hours, furnace cool at 75 F per hour down to 1175 F and hold at 1175 F for at least 12 hours then air cool..
May be hardened by heat treatment - see "Heat Treat" and also hardens due to cold working.
About the Company
Year of Establishment1980
Legal Status of FirmSole Proprietorship (Individual)
Nature of BusinessManufacturer
Number of Employees11 to 25 People
Annual TurnoverRs. 25 - 50 Crore
IndiaMART Member SinceAug 2015
Established in the year 1980, we, “Vessco Overseas”, are one of the prominent firms involved in manufacturing, supplying and exporting a remarkable range of Nitronic, Stainless Steel, Monel, Titanium. The range offered by us encompasses Inconel Products, Stainless Steel Flanges, Duplex Products etc.