N06625

Introduction

Inconel 625 is a Nickel-Chromium-Molybdenum alloy with excellent corrosion resistance in a wide range of corrosive media, being especially resistant to pitting and crevice corrosion. It is a favourable choice for sea water applications.

Chemical Composition of Inconel 625

The compositional range for Inconel 625 is provided in the table below.

Element

Content

Ni

58% min

Cr

20 – 23%

Mo

8 – 10%

Nb+Ta

3.15 – 4.15%

Fe

5% max

Typical Properties of Inconel 625

Typical properties of Inconel 625 are covered in the following table.

Property

Metric

Imperial

Density

8.44 g/cm3

0.305 lb/in3

Melting point

1350 °C

2460 °F

Co-Efficient of Expansion

12.8 μm/m.°C

(20-100°C)

7.1×10-6 in/in.°F

(70-212°F)

Modulus of rigidity

79 kN/mm2

11458 ksi

Modulus of elasticity

205.8 kN/mm2

29849 ksi

Properties of Supplied Materials and Heat Treated Materials

Condition of Supply

Heat Treatment (After Forming)

Annealed/Spring Temper Stress relieve at 260 – 370°C (500 – 700°F) for 30 – 60 minutes and air cool.
Condition

Approx Tensile Strength

Approx Service Temp.

Annealed

800 – 1000 N/mm2

116 – 145 ksi

-200 to +340°C

-330 to +645°F

Spring Temper

1300 – 1600 N/mm2

189 – 232 ksi

up to +200°C

up to +395°F

Relevant Standards

Inconel 625 is covered by the following standards:

•         BS 3076 NA 21

•         ASTM B446

•         AMS 5666

Equivalent Materials

Inconel 625 is the tradename of Special Metals Group of Companies and equivalent to:

•         W.NR 2.4856

•         UNS N06625

•         AWS 012

Applications of Inconel 625

Inconel 625 typically finds application in:

•         Marine

•         Aerospace industries

•         Chemical processing

•         Nuclear reactors

•         Pollution control equipment


WhatsApp Online Chat !