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Nickel alloy – Alloy 20, UNS N08020 Introduction

Nickel alloy – Alloy 20, UNS N08020 Introduction

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

Steel Grade : Alloy 20 / N08020 / 2.4660 / 0Cr20Ni35Mo3Cu4Nb / CN7M

Features and Application Areas :

Features:

* Has many excellent properties and has good resistance to oxidizing and moderate reducing corrosion.

* Excellent resistance to stress corrosion cracking and local corrosion resistance.

Applications:

* Used in heating tubes, vessels, baskets and chains for sulfuric acid pickling plants as well as heat exchangers, evaporators, washing and dipping tubes in phosphoric acid production.

* Applied to seawater cooling heat exchangers, marine product piping systems, and acid gas environment piping.

wedding-15

* Applied to air heat exchangers in petroleum refining.

* Flame retardant alloys applied in food engineering, chemical engineering, and high-pressure oxygen applications.

* Widely used in a variety of industrial applications where the operating temperature does not exceed 550°C.

Applicable standards:

ASTM B 729/B 751/B 775/B 829/ASTM SB 729/SB 751/SB 775/SB 829

Chemical composition.

C Si Mn P S Cr Ni Mo Cu Nb Nb+Ta Fe
0.07

max

1.0

max

2.0

max

0.045

max

0.035

max

19.0-

21.0

32.0-

38.0

2.0-

3.0

3.0-

4.0

1.0

max

8C-1.0 剩余

Density and coefficient of linear expansion:

Density 8.08 g/cm3
Temperature 25 ~ 100°C
coefficient of linear expansion 14.7μm/m •°C

Mechanical properties:

             Status Tensile Strength

Ksi(Mpa)min

Yield strength (0.2% residual deformation)

.Ksi (Mpa)min

2in or 50.8 pitch elongation

%)Min

Annealing 80(550) 35(240) 30