PRECIPITATION HARDENING STAINLESS STEELS


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Precipitation Hardening Stainless Steels
Precipitation Hardening Stainless Steels
Precipitation Hardening Stainless Steels

Precipitation hardening stainless steels use nickel and chromium as their major alloying elements and are a combination of the martensitic and austenitic alloy types. In the solution annealed condition these steels have a semi-austenitic structure allowing for good machining and forming characteristics. However this is transformed after machining to a martensitic structure during heat treatment and strength is increased as a result. One of the advantages of precipitation hardening stainless steels is that full heat treatment can be achieved at relatively low temperatures minimising distortion.

Precipitation hardening stainless steels are used where high strength and good corrosion resistance are required as well as for applications requiring high fatigue strength, good resistance to galling and stress corrosion resistance. The reduced distortion during heat treatment makes these steels particularly suitable for intricate parts requiring machining and welding and where freedom from distortion is a requirement.

Precipitation hardening stainless steels are used in aerospace, defence and offshore oil & gas industries. For missile components, motor shafts, valve stems, gears and other mechanical components.

Nearest Equivalent Specification

Available Products

A-286

Precipitation hardening stainless steel (grade 660) with high strength up to 700oC and good corrosion and oxidisation resistance. For high temperature bolting in Oil & Gas applications.

UNS
 

S66286
 

Precipitation hardening stainless steel bar. American aerospace grade, vacuum arc remelted (type XM-13). Very high strength/toughness with good corrosion resistance. For aircraft structural components and use in petrochemical industry.

AMS
UNS
 

5929
S13800
 

Precipitation hardening stainless steel bar. American aerospace grade, vacuum arc remelted or electro-slag refined (type XM-12). High strength/toughness with good corrosion resistance. For aircraft/missile construction, chemical process equipment and nuclear reactor components.

AMS
UNS
 

5659
S15500
 

15-7 PH

Precipitation hardening stainless steel (grade 632) with high strength and moderate corrosion resistance. For spring type applications in aerospace and other markets.

AMS
UNS

5528
S17700

Precipitation hardening stainless steel bar. American aerospace grade (type 630). High strength/toughness, good corrosion resistance and high fatigue resistance. For aerospace equipment and missile components. Commercial grade used in Oil and Gas.

AMS
UNS
ANSI

5643
S17400
630

17-7 PH

Precipitation hardening stainless steel sheet and strip (grade 631) with excellent mechanical properties up to 480oC and moderate/good corrosion resistance. For components in aerospace, chemical processing and oil refining.

AMS
UNS
 

5528
S17700
 

S143

Precipitation hardening stainless steel. British aerospace grade as bar and forgings (FV520B type). High strength with moderate/good corrosion resistance. For mechanical components in aerospace and defence.

FV520B