ASTM A276 UNS S32750 (2507) round bars supplier, contact us to get free quote and sample!
Looking for high-strength, corrosion-resistant Super Duplex round bars? As a premier supplier, we provide ASTM A276 UNS S32750 (2507) round bars in a variety of finishes, including bright, polished, and black. Our Super Duplex 2507 bars are designed for extreme environments like offshore oil and gas, chemical processing, and marine engineering.
What is ASTM A276 UNS S32750 Round Bar?
ASTM A276 UNS S32750 is a type of super duplex stainless steel with a high level of corrosion resistance and strength. It is also known as super duplex 2507, due to its composition of 25% chromium, 7% nickel, 3.5% molybdenum, and other elements. This alloy 2507 offers excellent resistance to pitting and crevice corrosion, as well as high mechanical strength and ductility.
ASTM A276-13a:
Standard Specification for Stainless Steel Bars and Shapes
One of the most commonly used forms of super duplex 2507 is the round bar. ASTM A276 S32750 round bar is used in a variety of applications, including offshore oil and gas drilling and production equipment, chemical processing, and marine engineering. Super duplex 2507 round bar is produced in a range of sizes and lengths, and can be cut to specific dimensions or ordered in standard lengths.
ASTM A276 UNS S32750 Round Bar Fabrication
The manufacturing process for ASTM A276 S32750 round bar involves hot rolling or forging, followed by annealing or heat treatment to improve its mechanical properties. The 2507 stainless steel bar rod is then finished to the required surface finish and straightness tolerance. The result is a high-quality, durable product that can withstand harsh conditions.
ASTM A276 S32750 Material Properties
One of the key features of ASME SA 276 UNS S32750 is its resistance to corrosion. This super duplex stainless steel UNS S32750 is highly resistant to corrosion from a variety of sources, including acidic and alkaline environments, seawater, and chloride ion corrosion. This makes it an ideal choice for use in harsh environments where standard materials would quickly corrode and fail.
In addition to its corrosion resistance, ASTM A276 S32750 round bar also offers excellent mechanical properties. Super duplex 2507 round bar has a high tensile strength and yield strength, as well as good toughness and ductility. This makes it ideal for use in high-stress applications, such as offshore drilling and production equipment, where reliability and durability are critical.
Why Choose Super Duplex 2507 over Duplex 2205?
While Duplex 2205 is the "workhorse" of the industry, UNS S32750 (2507) is required when you need:
- Higher Corrosion Margin: Better resistance to pitting and crevice corrosion in high-chloride environments.
- Superior Yield Strength: Allows for thinner walls and lighter designs in high-pressure systems.
- Extended Service Life: Ideal for subsea equipment and desalination plants where maintenance is difficult.
UNS S32750 Available Product Forms
Our company is a professional and reliable one-stop service manufacturer suppliers exports. We not only provide super duplex 2507 round bar, but also provide SAF 2507 pipes, tubes, plates, sheets, pipe fittings, flanges, fasteners, and fabricated pipe spools service. Free samples can be provided. Contact us for a free quote.
Frequently Asked Questions (FAQ)
1. What is the difference between ASTM A276 and ASTM A479 for S32750?
While both standards cover Super Duplex bars, ASTM A276 is a general specification for stainless steel bars and shapes. ASTM A479 is a more rigorous standard specifically intended for use in boilers and pressure vessels. We can supply UNS S32750 dual-certified to meet both standards upon request.
2. Is UNS S32750 the same as SAF 2507?
Yes. SAF 2507 is the original trade name developed by Sandvik (now Alleima), while UNS S32750 is the unified numbering system designation. They refer to the same 25% Chromium super duplex alloy (1.4410).
3. Can S32750 round bars be welded?
Yes, Super Duplex 2507 has good weldability. However, it requires specific filler metals (usually over-alloyed with nickel) and strict control of heat input to maintain the 50/50 balance of austenite and ferrite.
4. What are the typical lead times for custom-cut round bars?
Standard stock sizes can be dispatched within 2–5 business days. For custom lengths, centerless grinding, or specialized heat treatments, lead times typically range from 1 to 2 weeks depending on the order volume.
5. Do you provide Mill Test Certificates (MTC)?
Absolutely. All shipments are accompanied by a certified MTC to EN 10204 3.1, detailing the chemical analysis, mechanical testing results, and ultrasonic test (UT) reports where applicable.
