Home > News > Content
1.4542 AISI 17-4pH S17400 Stainless Steel Round Bar
Feb 09, 2017

1.4542 is a martensitic precipitation/age-hardening stainless steel offering high strength and hardness along with

excellent corrosion resistance. It has good fabricating characteristics and can be age hardened by a single-step,

low temperature treatment. It has high strength combined with good corrosion resistance in fresh and salt water,

industrial and marine atmosphere, and in oxidizing chemicals. 1.4542 shows excellent resistance to oxidation up

to approximately 539C.


It has been used for a variety of applications including oil field valve parts, chemical process equipment, 

aircraft fittings, fasteners, pump shafts, nuclear reactor components, gears, paper mill equipment, missile 

fittings, and jet engine parts.

Mechanical Properties of Precipitation Hardened Steel

Temperature0.2 % proof stress (N/mm2)Tensile strength (N/mm2)Elongation, min. (%)Reduction, 

min. (%)Notch impact energy (ISO-V), min. (J)








Hot forming temperature: 1100-900oC.

Cold Working

Despite its high initial yield strength, 17-4 can be cold worked successfully by most common methods.


Long, gummy chips characterize this alloys machinability. It can be machined in the annealed condition, however 

condition H1150M will yield best results. Post machining solution treatment of parts will be required prior to 

final hardening.

Corrosion Resistance

1.4542 has withstood corrosive attack better than any of the 400 series hardenable stainless steels, and, in most

 corrodents, its corrosion resistance closely approaches that of stainless types 302 and 304.


1.4542 can be satisfactorily welded by the shielded fusion and resistance welding processes. Oxyacetylene welding 

is not recommended, since carbon pickup in the weld may occur. When a filler metal is required, AWS E/ER630 welding

consumables should be considered to provide welds with properties matching those of the base metal. When designing 

the weld joint, care should be exercised to avoid stress concentrators, such as sharp corners, threads, and partial

-penetration welds. When high weld strength is not needed, a standard austenitic stainless filler, such as

E/ER308L, should be considered.

Company Information

Jiangsu Jinguan Special Steel Pipe Co. Ltd., specialized in petroleum chemical industry, electric power industry

with a variety of alloy steel pipe, stainless steel pipe, carbon steel, nickel base alloy, Hastelloy alloy, high

temperature resistance, low temperature resistance, corrosion resistant pipe and plate, round steel, steel and 

other materials. Jinguan adhere to customer first, innovation based on customer demand, win the respect and trust 

of customers.


Copyright © Jiangsu Jinguan Special Steel Pipe Co. Ltd. All rights reserved.Tel: +86-510-8358 6478