Product : Incoloy 800
Kategori : Nickel-based Alloy
Standard
• Roundbar: ASTM B446, BS 3076 NA 21,AMS 5666
• Sheet/plate: ASTM B443 AMS 5599 BS3072
• Pipe/Tube: ASTMB444 ASTM B704 AMS 5581 BS3074 GEB50TF133
• Fitting: ASTM B366 Din 17754
Equivalent
W.NR 2.4856, UNS N06625, AWS 012
ASTM B 409, B 408, B 407, B 564 UNS Number N08810/N08811
What is INCOLOY
Incoloy 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, 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.
Characteristics
Characteristics
- 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
INCOLOY® alloys Grade
INCOLOY® 800
INCOLOY® 800H/800HT®
INCOLOY® 803
INCOLOY® 825
INCOLOY® 832
INCOLOY® 864
INCOLOY® 890
INCOLOY® 903
INCOLOY® 907
INCOLOY® 908
INCOLOY® 909
INCOLOY® 925
INCOLOY® 945 - 945X
INCOLOY® MA956
INCOLOY® DS
INCOLOY® 020
INCOLOY® 028
INCOLOY® 330
INCOLOY® 25-6HN
INCOLOY® 25-6MO
INCOLOY® 27-7MO
INCOLOY® A-286
Chemical Composition
| Ni | Cr | Fe | Al | Ti | C | |||||||
| 30.0-35.0 | 19.0-23.0 | 39.5 min | 0.15-0.60 | 0.15-0.60 | 0.10 max |
Mechanical Properties
| Properties | Incoloy | |
| Ultimate Tensile Strength (MPa) | 586 | |
| Yield Strength at 0.2% offset (MPa) | 276 | |
| Elongation (%) | 43 | |
| Supplied Condition | Annealed |
Physical Properties
| Properties | Incoloy | |
| Density (g/cm3) | 7.95 | |
| Dynamic Modulus of Elasticity (GPa) | 196 | |
| Thermal Conductivity (W/m-K) | 11.5 - 18.3 | |
| Electrical Resistivity (Ohm.mm2/m) | 0.989 - 1.17 |
Applications
Heat exchangers and process piping; carburizing fixtures and retorts; furnace components; electric range heating-element sheathing; extruded tubing for ethylene and steam methane reforming furnaces; ammonia effluent coolers, super-heater and re-heaters in power plants.
Related Grades
Incoloy 800 | Incoloy 825 | Incoloy 908 | Incoloy 800H | Incoloy 800HT |
Source
http://rms.scu.ac.ir/
Mechanical Properties of Incoloy 908 — An Update
I. S. Hwang, R. G. Ballinger, M. M. Morra, M. M. Steeves
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