Incoloy800H (N08810/NS112/1.4958) nut

Similar brands

GB/T	UNS	Trademark	W.Nr
NS112	NO8810	Incoloy800H	1.4958

 

Chemical composition of Incoloy800H nut

Alloy	%	Ni	Cr	Fe	C	Mn	Si	Cu	S	Al	Ti	P
Incoloy 800H	Min	30	19	Balance	0.05					0.15	0.15
	Max	35	23		0.10	1.5	1.0	0.75	0.015	0.60	0.60	0.03

 

Physical properties of Incoloy 800H nuts:

density	8.0g/cm³
melting point	1350~1400℃

 

The minimum mechanical properties of Incoloy800H bolt alloy at room temperature:

Alloy status	tensile strength Rm N/mm2	Yield Strength RP0.2 N/mm2	Elongation A5%
Solid solution	450	180	35

 

Incoloy800H nut alloy has the following characteristics:

1. Excellent corrosion resistance in extremely high temperature aqueous media up to 500°C
2. Excellent resistance to stress corrosion
3. Very good processability

 

The metallographic structure of Incoloy800H nut:

800H is a face-centered cubic lattice structure. The extremely low carbon content and increased T:C ratio increase structural stability and maximize resistance to sensitization and intergranular corrosion. Low-temperature annealing at around 950°C ensures a fine-grained structure.

Corrosion resistance of Incoloy800H nut:

800H is resistant to many corrosive media. Its high nickel content makes it very resistant to stress corrosion cracking in aqueous corrosive conditions. The high chromium content gives it better resistance to pitting and crevice corrosion cracking. This alloy has good corrosion resistance to nitric acid and organic acids, but has limited corrosion resistance in sulfuric acid and hydrochloric acid. In addition to the possibility of pitting corrosion in halides, it has good corrosion resistance in oxidizing and non-oxidizing salts. It also has good corrosion resistance in water, steam and mixtures of steam, air and carbon dioxide.

 

Incoloy800H nut application range application fields

1. Nitric acid condenser–resistant to nitric acid corrosion
2. Steam heating tube–very good mechanical properties
3. Heating element tube–very good mechanical properties

For applications in environments up to 500°C, the alloy is supplied in the annealed condition.