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Short Description:
Inconel 800, 800H, 800HT is a kind of nickel-iron chromium alloy with good strength, high temperature oxidation resistance and excellent carburizing resistance. The three alloys are very similar, with only slightly different amounts of carbon, aluminum and titanium.
◆ Bar ◆ Plate ◆ Srip ◆ Tube ◆ Wire
Product Description
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.
Incoloy 800/800H/800HT Characteristic:
- Excellent corrosion resistance in the water media of the extremely high temperature of 500C.
- Good stress corrosion resistance
- Good machining
- High creep strength
- Very good resistance to oxidation
- Good resistance to combustion gases
- Very good resistance to carburization
- Good resistance to nitrogen absorption
- Good structural stability at high temperatures
- Good weldability
Incoloy 800/800H/800HT Chemical Composition
| Model | C | Fe | Ni | Cr | Al+Ti | Ti | Al | Si |
|---|---|---|---|---|---|---|---|---|
| 800 | ≤0.1 | >39.5 | 30-35 | 19-23 | 0.3-1.2 | 0.15-0.6 | 0.15-0.6 | ≤1.0 |
| 800H | 0.05-0.10 | >39.5 | 30-35 | 19-23 | 0.3-1.2 | 0.15-0.6 | 0.15-0.6 | ≤1.0 |
| 800HT | 0.06-0.10 | >39.5 | 30-35 | 19-23 | 0.85-1.2 | 0.25-0.6 | 0.25-0.6 | ≤1.0 |
⁎ The chemical composition of the three materials is less different, which makes them less different in terms of overall heat and corrosion resistance and physical properties.
Incoloy 800/800H/800HT Physical Properties
| Density | Melting range |
|---|---|
| 8.0 g/cm³ | 1357-1385°C |
Incoloy 800/800H/800HT Mechanical Properties (Minimum value at 20℃)
| ALLOY | Tensile Strength (Rm N/m㎡) | Yield Strength (RP 0.2N/m㎡) | Elongation (A5/%) |
|---|---|---|---|
| Incoloy 800 | 500 | 210 | 35 |
| Incoloy 800H | 450 | 180 | 35 |
- Bars & Rods & Foring Ring /Flanges
- Sheet & Plate
- Strip & Coil
- Welding Wire &Spring wire
- Seamless Tube & Welded Pipe
»Round Bar & Square Bar & Hexagon Bar
● Diameter : φ8～φ300mm Length:10mm-6000mm
● Hot forging, Hot Rolling, Cold Drawing
● Bright Surface, Polished Surface, Black Surface
»Tube & Pipe:Seamless Tube& Welded Pipe
● Cold Drawing Seamless Pipe： φ1.0～φ220mm
● Hot Extrusion pipe: φ50～φ250mm
● Others : U Blend Tube and Elbow
»Hot Rolled Plate & Cold Rolled Sheet
● Cold Rolling Sheet Thickness: ≦2.0mm Width:≦1500m
● Hot rolling Plate Thickness: ≧4.0mm Width: ≦2500m
»Strip & Tape Ribbon
● Thickness: ≧ 0.01mm Width: 15mm-300mm
● Cold rolling BA Strip, Hard & Soft Condition
»Straight Length Wire & Spool Wire
● Welding Wire: φ 0.1mm～6.0mm Cut length Rod: φ1.0～φ8.0mm
● Package : 5-25kg/Spool or Box
Incoloy 800/800H/800HT Applications
- Nitric acid catalyst supports
- Reformer outlet pigtails and manifolds
- Heat exchangers
- Pressure vessels
- Dampers