UNS NO32750 (F53) Square Rods
UNS S32750, commonly known as Super Duplex F53, is a premium grade stainless steel widely recognized for its exceptional corrosion resistance, high mechanical strength, and outstanding performance in extreme environments. Square rods made from this alloy combine duplex microstructure benefits—both austenitic and ferritic phases—giving the material superior strength compared to conventional stainless steels. These rods are ideal for structural, machining, and fabrication applications that demand durability and reliability..
F53 Super Duplex Square Rods are especially valued for their high chromium, molybdenum, and nitrogen content, which allow them to withstand chloride-induced stress corrosion cracking, pitting, and crevice corrosion. This makes them a preferred choice in seawater systems, chemical plants, and oilfield equipment where aggressive conditions are common. Their excellent resistance to erosion and fatigue also enhances long-term operational performance in dynamic environments..
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Manufacturers and engineering companies prefer UNS S32750 square rods due to their remarkable tensile and yield strength, making them suitable for heavy-load components and high-pressure systems. Their superior thermal stability ensures consistent performance even in elevated-temperature applications. Additionally, the alloy exhibits good weldability and workability, which helps in producing custom designs and precision-engineered components..
Industries such as offshore engineering, desalination plants, marine hardware, chemical processing, and petrochemical units** commonly utilize F53 square rods for their combination of strength and corrosion resistance. These rods are also widely used in pumps, valves, heat exchangers, shafting, and structural frames where exposure to harsh chemicals and seawater is constant. Their durability significantly reduces maintenance costs, making them a cost-effective material choice..
✔ Specification of UNS S32750 (F53) Square Rods
| Grade | Super Duplex UNS S32750 / F53 |
|---|---|
| Standards | ASTM A479, ASTM A276, ASTM A182, ASME SA479 |
| Size Range | 10 mm – 200 mm |
| Form | Square Rods, Square Bars |
| Finish | Black, Bright, Polished, Peeled, Turned |
✔ Chemical Composition
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 24 – 26 |
| Nickel (Ni) | 6 – 8 |
| Molybdenum (Mo) | 3 – 5 |
| Nitrogen (N) | 0.24 – 0.32 |
| Manganese (Mn) | ≤ 1.2 |
| Carbon (C) | ≤ 0.03 |
| Silicon (Si) | ≤ 0.8 |
| Iron (Fe) | Balance |
✔ Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | 800 MPa min |
| Yield Strength | 550 MPa min |
| Elongation | 15% min |
| Hardness | ≤ 300 HB |
✔ Equivalent Grades
| Standard | Grade |
|---|---|
| UNS | S32750 |
| WNR | 1.4410 |
| EN | X2CrNiMoN25-7-4 |
| AFNOR | Z3CD25.06Az |
✔ Dimension Chart (Square Rods)
| Square Size (mm) | Approx. Weight (kg/m) |
|---|---|
| 10 x 10 | 0.79 |
| 20 x 20 | 3.20 |
| 25 x 25 | 5.00 |
| 40 x 40 | 12.50 |
| 50 x 50 | 19.60 |
| 75 x 75 | 44.10 |
✔ Applications of UNS S32750 / F53 Square Rods
- Offshore oil & gas platforms
- Desalination plants and seawater equipment
- Chemical & petrochemical processing
- Pump shafts, valve components, marine hardware
- Pulp & paper industry
- Pressure vessels, heat exchangers
- Mining and fertilizer industry
Overall, UNS S32750 (F53) Square Rods serve as a reliable, high-performance solution for applications requiring superior corrosion resistance, strength, and longevity. Their versatility and robustness have made them a preferred material across diverse industries that depend on high-integrity stainless steel components. The alloy’s proven track record in demanding conditions reinforces its status as a premium engineering material..
UNS S32750 (F53) Super Duplex Stainless Steel Square Rods are engineered to deliver superior performance in extremely corrosive and high-stress environments. Designed with a balanced dual-phase microstructure of ferrite and austenite, these square rods offer nearly double the strength of 300-series stainless steels while maintaining excellent toughness and ductility. This balance of strength and corrosion resistance allows the material to perform reliably in applications where ordinary stainless steels fail prematurely.
Frequently Asked Questions (FAQ)
Q1: Why choose UNS S32750 (F53) Square Rods for marine applications?
A: Due to their high Cr–Mo–N content, F53 rods offer exceptional resistance to seawater, pitting, and stress corrosion cracking—ideal for coastal regions like Tamilnadu, Karnataka, and Andaman Islands.
Q2: Do you supply material with MTC?
A: Yes, Rose Metal Industries provides MTC (EN 10204 3.1/3.2) along with third-party inspection, PMI, and NDT reports.
Q3: Can you deliver custom-cut square rods?
A: Absolutely. We offer cutting, polishing, machining, threading, and custom sizes as per client specifications.
Q4: Which standards are followed for F53 Square Rods?
A: We supply according to ASTM A479 / A276 / A182 and equivalent international standards.
Q5: Do you export globally?
A: Yes, we export Super Duplex Square Rods to the Middle East, Europe, Africa, and Southeast Asia.