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* Inconel/Incoloy and Monel are
Registered Trademarks of Special Metals Corporation and its subsidiaries.
Inconel 825 Technical Data
Description: Inconel 825 is a nickel-iron-chromium-molybdenum
alloy with good corrosion resistance to sulfuric and phosphoric acids and sea
water. It is similar to Inconel 800 but with improved resistance to aqueous
corrosion. Although not fully resistant to stress-corrosion cracking in
boiling magnesium chloride, Inconel 825 has good resistance in neutral chloride
media.
Applications:
Typical applications are: phosphoric acid evaporators; pickling-tank heater,
pickling hooks and equipment; chemical process equipment; tank trucks;
propeller shafts, and spent nuclear fuel element recovery.
Specifications: UNS N08825, Werkstoff Number 2.4858, Tradename
INCOLOY Alloy 825
Alloy 825 Sheet, Strip and Plate
BS 3072 NA16
BS 3073 NA 16
ASTM B 424
ASTM B 906
ASME SB 424
ASME SB 906
DIN 17750
VdTUV 432
Alloy825 Rod, Bars, Forgings
BS 3076 NA 16
ASTM B 425
ASTM B 564
ASME SB 425
ASME SB 564
ASME Code Case N-572
DIN 17752, DIN 17753, DIN 17754
VdTUV 432
Alloy825 Pipe and Tube
BS 3074 NA 16
ASTM B163, ASME SB 163
ASTM B 423, ASME SB 423
ASTM B 704, ASME SB 704
ASTM B 705, ASME SB 705
ASTM B 751, ASME SB 751
ASTM B 755, ASME SB 755
ASTM B 829, ASME SB 829
DIN 17751
VdTUV 432
Other Similar Specifications
ASTM B366
ASME SB 366
DIN 17744
Typical Mechanical Properties:
Alloy 825
Tensile Strength (MPa)
0.2% Offset Yield Strength (MPa)
Elongation in (%)
Tubing
Annealed
772
441
36
Tubing Cold
Drawn
1000
889
15
Bar,
Annealed
690
324
45
Plate,
Annealed
662
338
45
Sheet,
Annealed
758
421
39
Typical Room Temperature Tensile Properties
Weldability:
Alloy 825 can be readily welded by the shielded metal-arc process using alloy
welding electrode 135, the gas shielded arc processes using alloy filler metal
65, and the resistance welding processes. The alloy requires no postweld heat
treatment. The corrosion resistance of deposited weld metal from both covered
electrode and bare wire is equivalent to that of the parent metal.
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