general scope

ASTM A564 Gr630 / 17/4PH  is a precipitation hardening martensitic stainless steel. It is often used in applications requiring high strength and corrosion resistance such as aerospace.

TM Steels can provide all materials produced to bespoke customer requirements. We project manage your raw material or semi finished material requirements, including Sawing,  Heat Treatment, Testing, Rough Machining, Hardness Testing, Ultrasonic Examination and certification, including BS EN 10204 3.1 & BS EN 10204 3.1 Witness documentation packages. We use an approved list of European Mills, and can offer material with PED / REACH & ROHS approval & UKAS accredited Testing. Contact our sales team today if you would like to enquire about our 17/4PH Stock Lines.

uses include: aerospace components, chemical processing, oil & gas, springs, bolts, gears, nuclear fuel storage

CHEMICAL COMPOSITION

 

 C Mn Cr P S Si Nb + Ta Ni Cu Fe

Min

 15.5 0.15 3.0 3.0

Max

 0.07 1.0 17.5 0.025 0.025 1.0 0.45 5.0 5.0 Balance

MECHANICAL PROPERTIES

Tensile

Result
Yield Strength 105,000
Tensile Strength 125,000
Elongation 16 %
Reduction of Area 50%
Hardness 255 - 311 BHN

 

SURFACE CONDITION                                             

Hot Rolled / Cold Finished

REDUCTION RATIO                                                      

4:1 Min

STRUCTURE                                                                   

Grain size will be ASTM 5 or finer.

ULTRASONIC EXAMINATION                                 

Ultrasonic examination available per ASTM A388/API6A Latest Edition or to bespoke customer specification.

product alias

ASTM A564 Gr.630 ~ 17/4PH ~ 1.4542 ~ X5CrNiCuNb ~ UNS S17400 ~ H1150D