Chrome Moly Steel

Chrome Moly Plate

There are many chromium molybdenum steel products available, each of which has very different chemical and mechanical properties, but they are often grouped as a single category. Chrome moly is the most common name for this group but other names that are used include chromalloy, croalloy, and Cr-Mo (pronounced “cro-mo”).

Chrome Moly Pressure Vessel Plates

Brown McFarlane specialises in chrome moly steel pressure vessel plates intended primarily for use in the fabrication of process equipment designed for elevated temperature service. 

Typical applications will include:

  • Boilers
  • Pressure Vessels
  • Heat Exchangers
  • Flanges
  • Valves
  • Ducting
  • Pipe Supports

Chrome Moly pressure vessel plates from Brown McFarlane are manufactured to the following steel standards:

ASME SA387  ASTM A387  EN10028-2 

What do chromium and molybdenum do to steel?

The addition to steel of the alloys chromium and molybdenum bring characteristics which are particularly desirable for units operating in high temperatures. Both alloys improve high temperature strength, molybdenum improves high temperature creep strength, both improve hardenability and there are additional benefits from wear resistance, corrosion resistance, and impact resistance. At the same time a chrome moly alloy is relatively easy to fabricate. 

Brown McFarlane and Chrome Moly Plate

The Brown McFarlane range is available from our U.K. service centre in Stoke-on-Trent and from our companies in Dubai and Singapore. As well as being available from stock, steel plate can be cut to size and shape according to your fabrication and design requirements and all work is governed by our independently accredited and regularly audited quality systems to ISO 9001.

Our plates are sourced from the highest quality steel manufacturers in the world and, like all our suppliers, these manufacturers have been vetted and assessed by our procurement team.

Brown McFarlane’s extensive supply partnerships with many of Europe’s leading steel plate manufacturers offer the opportunity for us to supply non-stock items or non-standard sizes directly from the steel mill to our customers. Using this form of supply it is often possible to deliver much faster than “standard” mill lead times.

All of our plates and plate products can be delivered to customers anywhere in the world using the services of our own in-house logistics staff.

Size Range 

Chrome Moly plates are available from Brown McFarlane as follows:

Thicknesses: 6 mm -100 mm
Widths: 2000 mm, 2500 mm
Length: up to 12000 mm

For all available sizes download our brochure or contact our sales teams who will be able to quote you for your requirements and offer technical assistance if required.



Plate Cutting

Plate Processing

  • Weld preparations
  • Grinding
  • Drilling and tapping
  • Pressing
  • Machining
  • Shotblasting and painting
  • Rolling
  • Rolled shells
  • Dished ends
  • Clad plates


Chrome Molybdenum Steel Plate pdfBrown McFarlane offers the widest range of chrome molybdenum steel plate, available ex-stock. 

     Download (680KB)

Buyers Guide

Boiler & Pressure Vessel - Comparison & Equivalents

Flatness Tolerances for Plates to BS EN10029

Tolerances on Thickness to BS EN10029