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420 mod - 13% Chromium Martensitic Stainless Steel

Surcharge

Both Scrap and most alloys saw a small increase going into April, meaning surcharges for the majority of grades increased slightly.

Nickel has been rising steadily (albeit not significantly) in recent weeks and therefore we would expect to see this filter through to the surcharges in the coming weeks.

Surcharge information as listed via Liberty Speciality Steels where possible, other based on mean chemical analysis for the given grade.

info
£609.00 per tonne

Surcharge Price History for 420 mod

APR 18 JUL 18 OCT 18 JAN 19 TODAY
£650.00 £692.00 £691.00 £688.00 £609.00

Description

420 mod grade steel is used extensively on completion equipment in both bar and tubular form, for structural and pressure containing members in standard and CO2 environments.

It is capable of deep hardening (to approximately 500HB) but usually limited to 22HRc in order to comply with NACE MR0175/ISO15156.

420 steel is very sensitive to oxygen and chlorine contamination. It has relatively low corrosion resistance when compared with other stainless steels and it is not recommended for temperatures above 100°C and chloride environments above 50 000ppm.

This grade has better hot working characteristics and is less susceptible to quench cracking when compared to 410.

Typical applications of 420 mod grade steel

  • Packers
  • Safety valves
  • Liner hangers
  • Flow control valves 
  • Other sub-surface equipment

420 mod steel is still often referred to as EN56C steel - its equivalent grade under the previous BS 970: 1955 standard.

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PRODUCTION METHOD

Rolled or Forged

FINISHES

Black Bar or Bright Bar