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17-4PH - Precipitation Hardening 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
£1,065.00 per tonne

Surcharge Price History for 17-4PH

APR 18 JUL 18 OCT 18 JAN 19 TODAY
£1,105.00 £1,249.00 £1,138.00 £1,074.00 £1,065.00

Description

17-4PH grade steel is a precipitation hardening stainless steel with excellent corrosion resistance, superior to martensitic grades such as 431 and 410, and comparable to austenitic grade 304.

It is heat treated by age hardening and has the potential for very high strengths (between 40-47HRc in the H900 condition). The ageing process should be controlled as it may affect the material’s corrosion resistance.

Arc and resistance welding processes used on standard grades of stainless steel are applicable to 17-4PH stainless steel. The low hardness enables sections up to 100mm to be welded without pre heating.

Typical applications of 17-4PH grade steel

  • Valve internals
  • Stems
  • Shafts
  • Gates
  • Seats and seal rings
  • Tubing hangers

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PRODUCTION METHOD

Rolled or Forged

FINISHES

Black Bar or Bright Bar