Virami Steel Hub is a leading manufacturer, supplier, stockist, and exporter of premium quality Stainless Steel 17-4PH Round Bars in Mumbai, India. We supply SS 17-4PH round bars across India and export globally to the USA, Canada, Europe, Russia, Middle East, Australia, and Southeast Asia. Our materials are produced according to international quality standards and undergo strict testing to ensure superior strength, durability, and corrosion resistance.
Stainless Steel 17-4PH Round Bars are widely used in aerospace, oil & gas, marine, nuclear, petrochemical, and high-pressure industrial applications due to their excellent combination of high strength, good corrosion resistance, and heat treatment capability.
Stainless Steel 17-4PH (UNS S17400) is a martensitic precipitation-hardening stainless steel. The designation “17-4PH” refers to:
This grade achieves high strength and hardness through a controlled heat treatment (aging) process. It combines corrosion resistance similar to 304 stainless steel with strength levels much higher than conventional stainless steels.
SS 17-4PH Round Bars are solid cylindrical bars used to manufacture high-strength shafts, fasteners, valve components, pump parts, structural fittings, and aerospace components.
Role of Alloying Elements
Mechanical properties vary based on aging condition (H900, H1025, H1075, H1150).
Typical Mechanical Properties (H900 Condition - Maximum Strength)
Typical Mechanical Properties (H1150 Condition - Improved Toughness)
The ability to modify mechanical properties through heat treatment makes SS 17-4PH highly versatile.
The precipitation hardening process consists of:
Step 1: Solution Annealing
Step 2: Aging (Precipitation Hardening)
Common aging conditions include:
This heat treatment provides flexibility to achieve required strength and toughness combinations.
SS 17-4PH provides:
However, for highly corrosive chloride environments, grades like 316 may be more suitable.
Machinability is good in the solution-treated condition and becomes more difficult after aging.
Machining Guidelines:
The material offers better machinability than many other high-strength stainless steels.
SS 17-4PH can be welded using:
Welding is typically performed in solution-treated condition. Post-weld aging heat treatment is recommended to restore strength.
We supply SS 17-4PH Round Bars in:
Standards:
Size Range:
Surface Finish:
SS 17-4PH is widely used in high-strength and corrosive environments.
Aerospace Industry
Oil & Gas Industry
Marine Industry
Nuclear & Power Plants
Power Generation
Industrial & Engineering
All SS 17-4PH Round Bars undergo:
Mill Test Certificates (MTC) are provided as per ASTM/AMS standards.Third-party inspection is available upon request.
Stainless Steel 17-4PH Round Bars are high-performance precipitation-hardening stainless steel products offering an excellent combination of strength, corrosion resistance, and heat treatment flexibility. With customizable aging conditions, SS 17-4PH is widely used in aerospace, oil & gas, marine, power generation, and heavy engineering industries.
Virami Steel Hub supplies premium-quality SS 17-4PH Round Bars with certified testing, competitive pricing, and reliable global delivery. We are committed to providing durable and high-strength stainless steel solutions for demanding industrial applications.
