Alloy Incoloy 800H Tube

The chemical composition of Incoloy 800 h:

Nickel chromium iron carbon manganese silicon alloy % copper sulfur aluminum titanium

800 minimum 30 19 0.15 0.15

35 23 largest margin of 0.10 1.5 0.75 0.015 0.60 0.60 1

800 h minimum 30 19 0.05 0.05 0.15

35 23 largest margin of 0.10 1.5 0.75 0.015 0.60 0.60 1

800 ht least 30 19 0.06 0.15 0.15

35 23 largest margin of 0.10 1.5 0.75 0.015 0.60 0.60 1

Titanium aluminum + 0.85 1.20

The physical properties of Incoloy 800 h:

The density of 8.0 g/cm3

Melting point of 1350-1400

Mechanical properties of Incoloy 800 h at room temperature, the minimum value:

Alloy tensile strength

The Rm N/was yield strength

RP0.2 N/was elongation

A5 %

, 800, 500, 210, 35

800 180 35 800 h

Incoloy800H alloy has the following features:

1. Up to 500in the extremely high temperature aqueous medium has excellent corrosion resistance

2. Good resistance to stress corrosion performance

3. Very good workability

Metallographic structure of Incoloy 800 h:

800 h of face-centered cubic lattice structure. Very low carbon content and improve the Ti: C ratio increased the stability of the structure and the largest sensitization resistance and resistance to intergranular corrosion. Around 950low temperature annealing guarantees the fine crystal structure.

The corrosion resistance of Incoloy 800 h:

800 h ability a lot of corrosion medium corrosion. Its high content of nickel in the aqueous corrosion condition has the very good resistance to stress corrosion cracking performance. High chromium content has better resistance to pitting corrosion and crevice corrosion cracking performance. The alloy has good nitric acid, organic acid, corrosion resistance, but the corrosion resistance in sulfuric acid and hydrochloric acid co.

, LTD. In addition to the possible corrosion in halide, in the oxidizing and non oxidizing salt has good corrosion resistance. In the water, steam and steam, air, carbon dioxide mixture also has the very good corrosion resistance.

Scope of application of Incoloy 800 h application areas are:

1. Nitric acid condenser, nitric acid corrosion resistance

2. Steam heating tube -- -- very good mechanical properties

3. The heating element tube -- very good mechanical properties

To apply to as high as 500environment, alloy supply state for annealed state.