Duplex and superduplex for offshore industry

Duplex and superduplex stainless steels have become firmly established for a number of applications in the offshore sector because of their excellent combination of strength and corrosion resistance. The most commonly used alloys are, standard duplex 22%Cr (eg. UNS S31803 and S32205) and superduplex 25%Cr with a pitting resistance equivalent number (PREN) ≥40 (eg. UNS S32750, S32760 and S32550). Metrode offers a comprehensive range of filler materials developed to meet industry’s needs for welding 22%Cr duplex and 25%Cr superduplex stainless steels. We have an established track record of supply to major projects in the offshore oil and gas industry. Consumables have been developed to meet the stringent requirements for toughness and corrosion resistance, increasingly demanded for critical offshore fabrications. Note: Please click on the products name to download our products index.

Alloy

Process

Product

Specications

AWS

BS EN

Duplex

UNS S31803

MMA

Supermet  2205

Ultramet  2205 E2209-16 E 22 9 3 N L R

2205XKS

E2209-15 E 22 9 3 N L B
TIG/MIG/SAW

ER329N

ER2209 22 9 3 N L

FCW

Supercore 2205 E2209T0-4 T 22 9 3 N L R
Supercore 2205P E2209T1-4 T 22 9 3 N L P

Zeron 100

UNS S32760

MMA Zeron® 100 XKS E2595-15 E 25 9 4 N L B
TIG/MIG/SAW Zeron® 100 X ER2594 25 9 4 N L

FCW

Supercore Z100XP

2507

UNS S32750

MMA

2507XKS

E2594-15 E 25 9 4 N L B
Ultramet  2507 E2594-16 E 25 9 4 N L R

FCW

Supercore 2507

Supercore 2507P

UNS S32550

MMA Supermet  2506Cu E2553-16 E 25 9 4 CuNL R

FCW

Supercore 2507Cu

North Sea Platform in the BP Bruce Field Metrode duplex and superduplex have been used successfully on numerous projects in the UK and worldwide over many years. Separator vessels fabricated using ER329N Sub Arc for subsequent use in the BP Andrew and Shell Pelican fields in the North Sea.