Nickel Alloy Pipe, ASTM B407 Incoloy 800( NO8800,1.4876), 800H( NO8810, 1.4958), 800HT(NO8811,1.4959)

Alloy 800, 800H, and 800HT are nickel-iron-chromium alloys with good strength and excellent resistance
to oxidation and carburization in high-temperature exposure. These nickel steel alloys are identical except
for the higher level of carbon in alloy 800H/HT and the addition of up to 1.20 percent aluminiumand
itanium in alloy 800HT. 800 was the first of these alloys and it was slightly modified into 800H. This
modification was to control carbon (.05-.10%) and grain size to optimize stress rupture properties.
In heat treatment applications 800HT has further modifications to the combined titanium and aluminium
levels (.85 - 1.20%) to ensure optimum high temperature properties.Alloy 800H/HT was intended for high
temperature structural applications. The nickel content makes the alloys highly resistant to both carborisation
and to embrittlement from precipitation of sigma phase.

Pipe and Tubes - ASTM B 163 & ASME SB 163 (Seamless Condenser & Heat Exchanger Tubes),
ASTM B 407/B 829 & ASME SB 407/SB 829 (Seamless Pipe & Tubes), ASTM B 514/B 775 &
ASME SB 514/SB 775 (Welded Pipe), ASTM B 515/B 751 & ASME SB 515/SB 751(Welded Tubes),
ASMECode Case 1325 (All Product Forms),ASME N-20 (Cold Worked SeamlessCondenser and
Heat Exchanger Tubes for Nuclear Service), BS 3074NA15 (Seamless Pipe & Tubes), SEW 470
(All Products), VdTÜV 412 (All Products), ISO 6207 (Seamless Tubing) Other Product Forms -
ASTM B 366 & ASME SB 366 (Fittings)