For maximum resistance to sour gas

Pressure vessels for sour-gas service make very special demands on steel quality. Only ultra-high cleanness and homogeneity assure constant protection against hydrogen-induced cracking (HIC).

The strengths of DICREST proprietary steel

  • DICREST has been developed and optimised for use in sour-gas-resistant pressure vessels. A specially controlled casting and rolling process, combined with concluding normalising and stress-relieving annealing after production, ensure resistance to HIC throughout the plate.
  • We supply DICREST in four HIC-resistance levels – DICREST 5, DICREST 10, DICREST 15 and DICREST PLUS, all of them in large plate thicknesses.
  • DICREST naturally fulfils the Requirements for Standardised Boiler and Pressure-Vessel Steels: ASME SA516 Grade 60, 65 and 70, P275 NH, NL1 and NL2, and P355 N, NH, NL1 and NL2.
  • We can also meet your own demanding specifications.
  • DICREST comes to you with the security assured by its global references.
  • Other pressure-vessel steels can also be supplied to DICREST standards on agreement, including SA537 Cl 1, for example, or a sour-gas-resistant TM steel for tank construction in accordance with the DI-TANK specifications.

DICREST steels ex stock

First choice specialists keep our DICREST steels in stock for you worldwide.


Brochures, data sheets & specifications

The right choice for sour-gas systems – DICREST
DICREST – sour gas resistant pressure vessel steels in accordance with ASTM
DICREST – sour gas resistant pressure vessel steels in accordance with EN
DICREST-PLUS – enhanced version of DICREST
DICREST – sour gas resistant pressure vessel steels
Delivery program – heavy plate

Contact persons


Philipp Ludwig
Head of Sales Department, Energy Transmission & Processing

Phone: +49 6831 472472
Fax: +49 6831 47 99 2685


Jörg Maffert
Head of Marketing & Technical Support, Energy Transmission & Processing

Phone: +49 6831 473612
Fax: +49 6831 473089