2507

Introduction

Stainless steel Super Duplex 2507 is designed to handle highly corrosive conditions and situations were high strength is required. High molybdenum, chromium and nitrogen content in Super Duplex 2507 help the material withstand pitting and crevice corrosion. The material is also resistant to chloride stress corrosion cracking, to erosion corrosion, to corrosion fatigue, to general corrosion in acids. This alloy has good weldability and very high mechanical strength.

The following sections will discuss in detail about stainless steel grade Super Duplex 2507.

Chemical Composition

The chemical composition of stainless steel grade Super Duplex 2507 is outlined in the following table.

Element

Content (%)

Chromium, Cr

24 – 26

Nickel, Ni

6 – 8

Molybdenum, Mo

3 – 5

Manganese, Mn

1.20 max

Silicon, Si

0.80 max

Copper, Cu

0.50 max

Nitrogen, N

0.24 – 0.32

Phosphorous, P

0.035 max

Carbon, C

0.030 max

Sulfur, S

0.020 max

Iron, Fe

Balance

Physical Properties

The physical properties of stainless steel grade Super Duplex 2507 are tabulated below.

Properties

Metric

Imperial

Density

7.8 g/cm3

0.281 lb/in3

Melting point

1350°C

2460°F

Applications

Super Duplex 2507 is widely used in the following sectors:

  • Power
  • Marine
  • Chemical
  • Pulp and paper
  • Petrochemical
  • Water desalinization
  • Oil and gas production

Products made using Super Duplex 2507 include:

  • Fans
  • Wire
  • Fittings
  • Cargo tanks
  • Water heaters
  • Storage vessels
  • Hydraulic piping
  • Heat exchangers
  • Hot water tanks
  • Spiral wound gaskets
  • Lifting and pulley equipment

Propellers, rotors, and shafts


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