Amigo Impex is an ASTM A479 Super Duplex S32750 bars and rods manufacturer and supplier in Mumbai, India, stocking and exporting super duplex products for over a decade.
UNS S32750 is the 25Cr member of the super duplex family, sold generically as 2507. Its microstructure splits nearly 50/50 between ferrite and austenite, and that dual-phase balance is the source of the grade's high strength. Chromium runs 24.0 to 26.0%, molybdenum 3.0 to 5.0% and nitrogen 0.24 to 0.32%, pushing its pitting resistance equivalent past 40 and protecting against chloride pitting, crevice attack and stress corrosion cracking in seawater service. ASME SA-479 sets the mechanical floor: 800 MPa tensile and 550 MPa yield for bars up to 50.8 mm, easing to 760 MPa and 515 MPa above that size, with 15% elongation throughout. Round bars span 3 mm to 450 mm in diameter, with squares up to 100 x 100 mm and flats up to 12 x 100 mm, in mill lengths up to 6000 mm, with black and bright finishes held side by side. Material can be dual-certified to EN 1.4410 and ASTM A479 S32750, where the heat satisfies both chemistry and mechanical windows; F53 applies to the forged route under ASTM A182.
As an ISO 9001:2015 and ISO 45001:2018 certified company and a reputable Super Duplex S32750 bar supplier, we handle cutting, machining, threading, and testing entirely in-house. Most of our supply powers pump shafts, valve components, desalination spares, and offshore fasteners, with every shipment backed by an EN 10204 3.1 mill test certificate.
Eight section profiles, two ASTM routes, and one comprehensive certification framework define our quoted Super Duplex S32750 bars and rods range, spanning from specific bar diameters through precise finishes, conditions, and dimensional standards.
ASTM A479 and ASME SA-479 govern stainless steel bars for boilers and pressure vessels. We certify our products against this strict standard. ASTM A276 applies to general-purpose bars, while other standards handle delivery and certification rules.
Forged bar is supplied and certified to ASTM A182 F53; hollow bar to ASTM A511. Rounds, squares, hexagons and flats are supplied to ASTM A479/A276.
| Standard | Scope |
|---|---|
| ASTM A479 / ASME SA-479 | Stainless steel bars and shapes for boilers and pressure vessels |
| ASTM A276 | General purpose stainless steel bars and shapes |
| ASTM A484 / ASME SA-484 | General requirements: dimensions, tolerances and testing |
| EN 10088-3 | Delivery conditions for 1.4410 bars, rods and sections |
SA-479 fixes the composition window below for UNS S32750 round bars. Read nitrogen first on a certificate: 0.24 to 0.32% separates genuine 2507 from leaner duplex chemistry, and copper is capped at 0.50%.
| Element | Limit (%) |
|---|---|
| Carbon (C) | 0.030 max |
| Manganese (Mn) | 1.20 max |
| Phosphorus (P) | 0.035 max |
| Sulphur (S) | 0.020 max |
| Silicon (Si) | 0.80 max |
| Chromium (Cr) | 24.0 to 26.0 |
| Nickel (Ni) | 6.0 to 8.0 |
| Molybdenum (Mo) | 3.0 to 5.0 |
| Nitrogen (N) | 0.24 to 0.32 |
| Copper (Cu) | 0.50 max |
| Iron (Fe) | Balance |
Plate and bar minima for S32750 are the same at 116 ksi tensile and 550 MPa yield; what changes on a bar enquiry is section size: above 50.8 mm, the A479 minimum drops to 760 MPa tensile and 515 MPa yield. The values below apply to ASTM A479 S32750 bar supplied solution-annealed, with hardness capped, not ranged.
| Condition | Size | Tensile Strength (min) | Yield Strength at 0.2% Offset (min) | Elongation, 50 mm / 4D (min) | Hardness (max) |
|---|---|---|---|---|---|
| Solution Annealed | Up to 50.8 mm (2 in.) | 800 MPa (116 ksi) | 550 MPa (80 ksi) | 15% | 310 HB |
| Solution Annealed | Over 50.8 mm (2 in.) | 760 MPa (110 ksi) | 515 MPa (75 ksi) | 15% | 310 HB |
The same material answers to various designation systems. The table links Super Duplex 2507 round bars to EN, DIN, JIS, Swedish SS and Chinese GB numbering, and F53 flags the forged route under ASTM A182.
| Designation System | Grade |
|---|---|
| USA (UNS) | S32750 |
| USA (Forging Grade, ASTM A182) | F53 |
| Europe (EN) | 1.4410 / X2CrNiMoN25-7-4 |
| Germany (DIN) | 1.4410 |
| Japan (JIS) | SUS329J4L (nearest equivalent) |
| Sweden (SS) | 2328 |
| China (GB) | 022Cr25Ni7Mo4N |
Diameter decides availability: small sections are clear from ready stock, larger and shaped profiles are made to order, and every Super Duplex S32750 bars and rods consignment can be cut to custom lengths.
| Section | Size Range |
|---|---|
| Round Bar Diameter | 3 mm to 450 mm |
| Flat Bar | 3 x 20 mm to 12 x 100 mm |
| Square Bar | 4 x 4 mm to 100 x 100 mm |
| Length | 100 mm to 6000 mm (3 to 6 metre standard) |
| Cutting | Custom cut lengths in-house |
Section profile and surface condition define the types of 1.4410 super duplex bars we process; both decide machining allowance and rate per kilogram.
Bundles of UNS S32750 bars are secured with steel strapping and wrapped in waterproof material, while bright and centreless ground material is placed in protective wooden cases to ensure the surface arrives unmarked. Every bundle is clearly marked with its grade, heat number, and size. As a reliable Super Duplex S32750 bar supplier, we ensure dispatch runs smoothly from Mumbai across PAN India, with sea export routes regularly serving the USA, Gulf markets, Europe, and Asia. Fresh rolling orders are completed in about 30 days, while ex-stock lots clear in just one to two days from order confirmation.
Each heat of S32750 Super Duplex rods ships with an EN 10204 3.1 mill test certificate covering chemistry and mechanical results. In-house testing is beside cutting, threading and packing, with third-party inspection supported where specified. Amigo Impex carries ISO 9001:2015, ISO 45001:2018, PED and AS 9120B certifications.
The Super Duplex S32750 bar price typically ranges from ₹500 to ₹1,500 per kg (approximately USD $6 to $18 per kg), depending on diameter, length, finish and order quantity. Bright and polished bars cost more than black bars, while bulk orders attract better rates. Prices also fluctuate with raw material rates, machining requirements, and ASTM/ASME compliance.
For current Super Duplex S32750 bar pricing, please share your size, grade, and quantity requirements. Our team will respond with a detailed quotation promptly.
60–70 tonnes held in Mumbai, with urgent requirements dispatched within one to two days.
AS 9120B, PED, ISO 9001:2015 and ISO 45001:2018, with an MTC on every order.
Cutting, machining, threading, fabrication and testing all handled at our own Mumbai facility.
Original mill certificates plus our own test reports, so every batch can be traced back.
Non-standard sizes and specifications made to order.
Dispatched from Mumbai to every major Indian city, and exported to USA, Gulf, Europe, Asia
Diameters from 3 mm to 450 mm cover Super Duplex S32750 round bars, with lengths of 100 mm to 6000 mm.
800 MPa (116 ksi) is the minimum tensile strength of S32750 super duplex bar under ASTM A479 for sections up to 50.8 mm, alongside a 550 MPa minimum yield; bars over 50.8 mm carry a 760 MPa tensile and 515 MPa yield minimum.
Besides round bar, Super Duplex S32750 (SDSS) is supplied as square, hex, flat, rectangular, threaded, hollow and forged bar.
Super Duplex S32750 bar comes in bright polished, centreless ground, matt, BA and No.4 finishes; black and rough-turned conditions suit heavy machining.
Yes. Every Super Duplex S32750 bar consignment comes with an EN 10204 3.1 mill test certificate, and third-party inspection is supported when specified.
Per-kilogram rates for S32750 super duplex bars range around ₹500 to ₹1,500 per kg (approximately USD $6 to $18 per kg). The price fluctuates as per diameter, section, quantity, finish and certification grade; they aren't fixed, so we quote against a stated size.
Machined components for seawater and high-chloride process duty specify S32750 round bar often.
