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Nickel Alloy-Inconel 625, UNS N06625 Introduction

Nickel Alloy-Inconel 625, UNS N06625 Introduction

Time:2022-03-20 Source:WUXI JIANUO SPECIAL STEEL CO.

Steel grade: Inconel 625 / N06625 / 2.4856 / 0Cr20Ni65Mo10Nb4/ NS336

Features and application areas.

Features.

* A Ni-Cr solid solution strengthened alloy with Mo and Nb as the main strengthening elements, with good tensile and fatigue properties from low temperature to 980°C.

* Excellent fatigue strength and resistance to chloride ion stress corrosion cracking, with resistance to high temperature peeling and oxidation.

* Virtually non-corrosive in seawater and industrial gas environments, with high corrosion resistance to seawater and salt solutions, as well as at high temperatures.

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Applications.

* Components of organic chemical process processes containing chlorides, especially where acidic chloride catalysts are used.

* Boilers and bleaching tanks for the manufacture of pulp and paper industry; reaction generators for acetic acid and acetic anhydride.

* Absorption towers, reheaters, flue gas inlet baffles, fans (wet), agitators, deflectors and flue pipes in flue gas desulfurization systems.

Applicable standards.

ASTM B 444/B 751/B 775/B 829/ASME SB 444/SB 751/SB 775/SB829

Chemical composition

C Si Mn P S Cr Ni Mo Nb Fe Al Ti Co
0.10 max 0.50

max

0.50

max

0.015

max

0.015

max

20.0~

23.0

58.0

min

8.0~

10.0

3.15~

4.15

5.0

max

0.40

max

0.40

max

1.0

max

Density and coefficient of linear expansion:

Density 8.44 g/cm3
Temperature 21 – 93°C
coefficient of linear expansion 12.80 μm/m •°C

 Physical Properties:

Status Tensile Strength

Ksi(Mpa)min

Yield strength (0.2% residual deformation)

.Ksi(Mpa)min

Elongation (%)minElongation (%)min
Grade 1 (minimum 871°C annealing) 120Ksi /827Mpa 60 Ksi /414 Mpa 30
Grade 2 (solution annealed at a minimum of 1093°C, followed by and without stabilization annealing at a minimum of 982°C) 100 Ksi /690 Mpa 40 Ksi /276 Mpa 30