Alloy 825 Nickel Alloy Technical Specifications
Standards
Mat. No.
2.4858
EU
NiCr21Mo
AISI/ASTM
-
UNS
N08825
Diğer
Inconel 825
Nicrofer 4221
Alloy 825
2.4858 / Alloy 825 is a nickel-chromium-iron alloy containing stabilized copper and molybdenum.
It is highly resistant to reducing and oxidizing acids, stress corrosion cracking, as well as localized corrosion such as pitting and crevice corrosion. It is particularly resistant to phosphoric acid and sulfuric acid.
Chemical Composition & Mechanical and Physical Properties
C%
0.025 max
Mn%
1.00 max
P%
0.020 max
S%
0.015 max
Si%
0.50 max
Cr%
19.50-23.50
Ni%
38.00-46.00
Mo%
2.50-3.50
Cu%
1.50-3.00
AI%
0.20 max
Co%
1.00 max
Ti%
0.60-1.20
Fe%
Rest
0.2 % Yield Strength Rp N/mm2
240 min
Tensile Strength Rm N/mm2
550 min
Elongation A5 %
30 min
Elastic Modulus kN/mm2
195
Application areas
In chemical processes, nuclear fuel reprocessing, oil and gas piping.
Specifications
BS 3072 – BS 3074, 3076 (NA16)
ASTM B 163, B 366, B 423 – B 425, B 564, B 704, B 705, B 751, B 775, B 829
NACE MR-0175/ISO 15156
ASME SB-163, SB-366, SB-423 – SB-425, SB-564, SB-704, SB-705, SB-751, SB-775, SB-829
DIN 17744, 17750 – 17754 ISO 6207, 6208, 9723 – 9725