Nut Bolts

Product Details:

These nickel steel alloys are identical except for the higher level of carbon in alloy 800H, and the addition of up to 1.20 percent aluminum and titanium in alloy 800HT. Incoloy 800 was the first of these alloys and it was slightly modified into Incoloy 800H. This modification was to control carbon (.05-.10%) and grain size to optimize stress rupture properties. Incoloy 800HT has further modifications to the combined titanium and aluminum levels (.85-1.20%) to ensure optimum high temperature properties.The nickel alloy is dual certified (800H/HT) and combines the properties of both forms. Incoloy 800H/HT alloy was intended for high temperature structural applications. The nickel content makes the alloys highly resistant to both chloride stress-corrosion cracking and to embrittlement from precipitation of sigma phase. The general corrosion resistance is excellent. In the solution annealed condition, alloys 800H and 800HT have superior creep and stress rupture properties. Today, most suppliers, including Mega Mex, only carry the dual certified 800H/HT alloy.

 

Incoloy 800 is primarily used in applications with temperatures up to 1100° F, where alloys 800H and 800HT are normally used in temperatures above 1100° F where resistance to creep and rupture is required. The chemical balance allows the nickel steel alloy to exhibit excellent resistance to carburization, oxidation and nitriding atmospheres. Incoloy 800HT will not become embrittled even after long periods of usage in the 1200-1600° F range where many stainless steels become brittle. Excellent cold forming characteristics typically associated with the nickel-chromium alloys are exhibited with 800HT. When cold formed extensively the grain size produces a visibly undulated surface called “orange peel”. Incoloy 800HT can be welded by the common techniques used on stainless steels.

 

In what forms is Incoloy® 800H/HT available at Mega Mex?

• Sheet
• Plate
• Bar
• Pipe & Tube (welded & seamless)
• Fittings (i.e. flanges, slip-ons, blinds, weld-necks, lapjoints, long welding necks, socket welds, elbows, tees, stub-ends, returns, caps, crosses, reducers, and pipe nipples)
• Wire

What are the characteristics of Incoloy 800H/HT?

• High temperature strength
• High creep rupture strength
• Resistant to oxidation and carburization in high temperature environments
• Good corrosion resistance in many acidic environments
• Good resistance to many sulfur-containing atmospheres

Alloy 800 (UNS N08800) Chemical Composition, %

 

Alloy 800H (UNS N08810) Chemical Composition, %

 

Alloy 800HT (UNS N08811) Chemical Composition, %

Product Details:

* Comparison chart for international steel grades for stainless steel boltings

Over the past few years we have manufactured many different kind of stainless steel grades of bolts and nuts, however the the above grades mentioned in the table are the main grades which we are manufacturing consistantly. With constant improvememt in quality we have been able to excell in the manufacturing process for the above steels and their respective grades.

Bigboltnut is the biggest and the largest producer for stainless steel ( SS ) hex bolts, hex screws, hex nuts, washers in India, we have 2 factories with a total covered area of over 100,00 sq. feet. We produce all types of SS products which are used in marine, sewage, water and desalination plants in counties like, Oman, U.A.E., Qatar, Dubai, Bahrain, Saudi arabia. Our popular Stainless steel bolts and nuts, SS 304 bolts and nuts, 304 fasteners, 304 Nuts and bolts, 304 bolt nut, 304 nut bolt, 316 Bolts and nuts, 316 fasteners, 316 hex bolts, 316S31 bolts and nuts, stainless fasteners.

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