List of Alloys & profiles

List of Alloys & profiles

Alloy Wire International

Datasheet: Incoloy® 825

Incoloy® 825

Incoloy® 825 is a Nickel-Iron-Chromium alloy with additions of Molybdenum and Copper. It has excellent resistance to both reducing and oxidising acids, to stress-corrosion cracking and to localised pitting and crevice corrosion. It is also especially resistant to sulphuric and phosphoric acids.

Incoloy® 825 is also known as Nicrofer 4221, Superimphy 82 and Ferrochronin 825.

Available in all profile options

alloy featured image inconel Incoloy® 825

Key Features

Resistant to reducing environments such as those containing sulphuric and phosphoric acids
Resistant to a variety of oxidising substances such as nitric acid and nitrates
Resistant to chloride-ion stress corrosion cracking and, pitting & crevice corrosion
Good for chemical processing


Designations

W.Nr 2.4858
UNS N08825
AWS 022

Specifications

ASTM B425
BS 3075 NA 16
BS 3076 NA 16
ISO 15156-3
(NACE MR 0175)

Chemical Composition

ElementMin %Max %
Ni38.0046.00
Co2.00
Cu1.503.00
Cr19.5023.50
Mo2.503.50
Al0.20
C0.05
Si0.50
Mn1.00
S0.03
Ti0.601.20
FeBal

Alloy Details

DensityMelting PointCoefficient of ExpansionModulus of RigidityModulus of Elasticity
8.14 g/cm³1400 °C14.0 μm/m °C (20 – 100 °C)75.9 kN/mm²196 kN/mm²
0.294 lb/in³2550 °F7.8 x 10-6 in/in °F (70 – 212 °F)11009 ksi28428 ksi

Heat treatment of finished parts

Condition as supplied by AWITypeTemperatureTimeCooling
Annealed or Spring TemperStress Relieve450 – 470 °C (840 – 880 °F)0.5 – 1 HrAir

Properties

Annealed
Approx. tensile strength<800 N/mm²<116 ksi
Approx. operating temperature depending on load** and environment-100 to +250 °C-145 to +480 °F
Spring Temper
Approx. tensile strength800 – 1100 N/mm²116 – 159 ksi
Approx. operating temperature depending on load** and environment-100 to +250 °C-145 to +480 °F

The above tensile strength ranges are typical. If you require different please ask.

*Trade name of Special Metals Group of Companies