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Nickel Iron Chromium Alloy Circles Rings Discs Incoloy Alloy 825 UNS N08825
Incoloy 825, also known by its UNS designation N08825, is a nickel-iron-chromium alloy with additions of molybdenum, copper, and titanium. This composition provides Incoloy 825 with excellent resistance to corrosion and oxidation, along with high strength at both ambient and elevated temperatures. The material is particularly noted for its resistance to sulfuric and phosphoric acids, making it a popular choice for chemical processing applications. Here are more specific details about Incoloy 825 forging circles/rings:
Composition
Nickel (Ni): 38% - 46%
Chromium (Cr): 19.5% - 23.5%
Iron (Fe): 22% minimum
Molybdenum (Mo): 2.5% - 3.5%
Copper (Cu): 1.5% - 3%
Titanium (Ti): 0.6% - 1.2%
Small amounts of manganese, silicon, carbon, sulfur, and aluminium.
Properties
Density: Approximately 8.14 g/cm³
Melting Point: 1370°C - 1400°C (2500°F - 2550°F)
Excellent corrosion resistance in both reducing and oxidizing environments.
Good resistance to chloride-ion stress-corrosion cracking.
Maintains good mechanical properties at both high and low temperatures.
Forging Details for Circles/Rings
Forging Temperature Range: Typically forged at temperatures ranging from 870°C to 1180°C (1600°F to 2160°F).
Forging of Incoloy 825 should be followed by a suitable heat treatment process to achieve optimal mechanical properties and corrosion resistance.
Heat Treatment: After forging, Incoloy 825 can be annealed by heating at 940°C (1725°F) followed by cooling to enhance its ductility and to relieve internal stresses.
Machinability: While Incoloy 825 can be machined, its work-hardening rate and alloying elements mean it may require slower speeds, more power, and better tooling than simpler steels.
Applications
Chemical Processing: Used in reactors, columns, and piping for the processing of phosphoric and sulfuric acids.
Oil and Gas: Piping, valves, and other components exposed to corrosive offshore and sour gas environments.
Pollution Control Equipment: Flue gas desulfurization systems and scrubbers.
Marine: Propeller shafts, seawater piping systems, and heat exchangers.
Standards and Specifications
ASTM B425: Specification for rod and bar.
ASTM B564: Specification for nickel alloy forgings.
ASTM B423: Specification for seamless pipe and tube. These standards specify requirements for chemical composition, mechanical properties, heat treatment, and testing methods for Incoloy 825.
Incoloy 825 forging circles and rings are highly valued for their exceptional corrosion resistance, durability, and ability to perform in a broad range of temperatures and environmental conditions. They are a key component in many industries where corrosion resistance is paramount. Properly forged and heat-treated Incoloy 825 components can offer long service life in challenging environments.
Grade
UNS
Density
Tensile Strength
(MPa min)
Yield Strength
(MPa min)
Reduction of Area min (%)
Elongation min (%)
Hardness (HRC)
INCOLOY 825
N08825
8.14
586MPa min
241MPa min
/
30% min
HRC 35 max
Chemical Composition(%):
Ni
C
Fe
Mn
Cr
S
Mo
38.0-46.0
0.05max
22.0min
1.0max
19.5-23.5
0.03max
2.5-3.5
Si
Cu
Al
Ti
0.5max
1.5-3.0
0.2max
0.6-1.2
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter,Seller
Year Established:
1998
Total Annual:
70 million-100 million
Employee Number:
50~60
Ecer Certification：
Verified Supplier
Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.
We have complete advanced technology facilities t... Hunan Dinghan New Material Technology Co.,Ltd. (DINGSCO) specialized in Nickel Based Corrosion Resistant and High Temperature alloys products which used in the world’s most technically demanding industries and applications.
We have complete advanced technology facilities t...
