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Nickel alloy-S32750 Introduction

Nickel alloy-S32750 Introduction

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

Nickel alloy-S32750 Introduction

Steel Grade Grades:F53/2507/ S32750/ 1.4410/ 1.4469/ 00Cr25Ni7Mo4N

Features and application areas.

Features.

* A ferritic-austenitic (duplex) stainless steel that combines many of the most beneficial properties of ferritic and austenitic steels; excellent resistance to pitting, crevice and uniform corrosion due to the high content of both chromium and molybdenum, and the bi-directional microstructure ensures that the steel has a high resistance to stress corrosion rupture.

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* It has better plasticity, its hardening characteristics are similar to austenitic stainless steel, and it can undergo large cold deformation.

* It requires higher initial deformation force than S32205, in addition it is more alloyed than S32205, and its precipitation sensitivity is higher than S32205, which requires faster cooling rate.

Application areas.

* Piping of alkali solutions containing ammonia.

* Evaporator for formaldehyde production, cooler for dimethyl benzodicarboxylate.

* Seawater heat exchanger for oil refining/marine propeller.

* Submarine oil (gas) collector and transport pipeline.

* In fertilizer industry, cooler, condenser and tail gas preheater for nitrate ammonia production, etc.

* Gas distribution panels and filters for flue gas desulfurization devices in power stations.

Applicable standards:

ASTM/ASME A789/SA789/A790/SA790

Chemical composition

C Si Mn P S Cr Ni Mo N Cu
0.03 max. 0.8 max. 1.2 max. 0.035max. 0.020max. 24.0~

26.0

6.0~

8.0

3.0

5.0

0.24~0.32 0.50

max.

Density and coefficient of linear expansion:

Density 7.8 g/cm3
Temperature 20~100°C
coefficient of linear expansion 11.5 µm/m•°C

Mechanical properties 

Status Tensile strength

Rm(MPa)Min.

Non-proportional extension strength

Rp0.2(MPa)Min.

Elongation Min.
1025-1125℃

Annealing

800 550 15