Lork Group - Custom 450 Steel Bar Export To Türkiye

Order Status:

 

Lork Group recently successfully completed an export order of Custom 450 (UNS S45000) precipitation-hardening stainless steel bars destined for Turkey. The shipment, totaling 200 kg, consists of bars measuring 500 mm in diameter and 66.5 mm in length; these materials will be used to manufacture pump shaft components for the Turkish chemical and energy industries.

 

 

Material: Custom 450 precipitation-hardening stainless steel

 

Custom 450 is a martensitic precipitation-hardening stainless steel that achieves excellent mechanical properties through solution treatment and aging. It combines high strength, excellent toughness, and outstanding corrosion resistance; in the aged condition, it typically exhibits a tensile strength exceeding 1100 MPa and a yield strength of at least 1000 MPa, enabling it to withstand high mechanical loads. After aging at 480°C, the tensile strength can reach 1200–1350 MPa, and the yield strength reaches 1050–1200 MPa.

 

Regarding corrosion resistance, Custom 450 performs comparably to 304 stainless steel while offering superior resistance to stress corrosion cracking. Its strength level is similar to that of 410 stainless steel, yet its corrosion resistance is far superior. This unique balance of properties makes it an ideal alternative to 304 or 410 stainless steel in many applications.

 

Custom 450 is typically supplied in the annealed condition, characterized by lower hardness that facilitates machining operations such as turning, milling, and drilling. Users can perform a single-step aging heat treatment (e.g., holding at 482°C for four hours) to significantly enhance strength and hardness. The material complies with international standards such as ASTM A564 and AMS 5773.

 

 

Order Details and Specifications Breakdown

 

The Custom 450 stainless steel bars purchased by the Turkish client feature a diameter of 500 mm and a length of 66.5 mm; each unit is a short cylindrical billet, with a total weight of 200 kg. This material is intended for the production of pump shaft components for the chemical and energy industries.

 

The pump shaft is a critical transmission component connecting the impeller to the drive motor. During operation, it is subjected to both bending and torsional moments, requiring a combination of properties such as the ability to withstand impeller torque, wear resistance, and corrosion resistance. In the chemical and energy sectors, pumping equipment often faces the combined challenges of high temperatures, high pressures, and corrosive media, placing extremely rigorous demands on the strength, toughness, and corrosion resistance of the shaft material.

 

Typical Application Scenario: Chemical Centrifugal Pumps in Türkiye's Petrochemical Industry

 

 

As the core rotating component of a centrifugal pump, the shaft is subjected to alternating torsional and impact loads during high-speed operation. While conventional 304 stainless steel offers good corrosion resistance, it lacks sufficient strength, making it prone to deformation or fatigue failure under high-pressure conditions; conversely, 410 stainless steel offers high strength but exhibits poor resistance to stress corrosion. Custom 450 effectively addresses the limitations of both materials: it provides corrosion resistance comparable to 304 and strength approaching or exceeding that of 410, while also demonstrating excellent resistance to stress corrosion cracking. Following aging treatment, the material also exhibits good ductility and toughness, enabling it to withstand the impact forces encountered during high-speed rotation. Custom 450 is particularly well-suited for rotating components-such as pump shafts in the chemical industry-that must endure high stress while in contact with corrosive media.

 

Supply and Service Advantages of the Lork Group

 

In this export order, the Lork Group demonstrated the following core capabilities:

 

Ample ready stock. Backed by a robust inventory system, Lork Group rapidly meets customer requirements regarding specifications and quantities. Bars with a 500mm diameter fall into the large-size category, demanding advanced smelting, forging, and heat treatment processes; leveraging a mature supply chain for specialty materials, Lork Group offers Custom 450 bars across a full size range, from Φ5.5mm up to over Φ500mm.

 

Efficient order fulfillment. The order was completed just five days after confirmation; following cutting and inspection, delivery is scheduled for early October 2025. This rapid response capability is driven by Lork Group's streamlined production processes and rigorous quality control system.

 

Strict quality control. Every batch of Custom 450 products undergoes chemical composition analysis, mechanical property testing, and non-destructive testing to ensure compliance with international standards such as ASTM A564 and AMS 5773. The entire process-from smelting to delivery-is fully traceable.

 

 

Conclusion

 

This export of Custom 450 stainless steel bars to Turkey further demonstrates Lork Group's professional service capabilities in the international specialty alloy market. Moving forward, Lork Group will continue to provide professional specialty material solutions to high-end manufacturing sectors-such as the global chemical and energy industries-backed by ample inventory, rapid delivery, and reliable product quality.

 

For more information on Custom 450 and other specialty alloy products, please contact the Lork Group sales team.

 

Email: susan@lorkgroup.com

WhatsApp: +86 199 3707 5488