Super Duplex Stainless Steel 2507 Round Bar: supplier, stockist and exporter in Mumbai, India
Rajgranth Metal & Alloys supplies super duplex stainless steel 2507 round bar (UNS S32750) from Mumbai and exports it to 18 markets.
What is Super Duplex 2507 round bar?
Round bar is solid feedstock for machined and forged parts, supplied in a stated delivery condition and tolerance class. Super Duplex 2507 bar is bought for shafts, valve and pump parts, fasteners and other components where the grade's properties are needed in the finished part. Super Duplex 2507 (UNS S32750, EN 1.4410) is a high-alloy duplex stainless steel with 25 percent chromium, 7 percent nickel, 4 percent molybdenum and nitrogen. Its pitting resistance equivalent is above 40, which puts it in the seawater and aggressive chloride class.
Rajgranth Metal & Alloys lists Super Duplex 2507 among the grades it supplies and exports from Mumbai.
Super Duplex 2507 designations and equivalents
| Standard | Designation |
|---|---|
| UNS | S32750 |
| EN / Werkstoff | 1.4410 |
| Also called | 2507, S32750 |
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Super Duplex 2507 chemical composition
Limits are those of the standard named in the table caption. Product-specific standards for pipe, tube and bar carry their own limits, so always confirm the composition on the mill test certificate supplied with the material.
| Element | Carbon | Manganese | Silicon | Phosphorus | Sulphur | Chromium | Nickel | Molybdenum | Copper | Nitrogen |
|---|---|---|---|---|---|---|---|---|---|---|
| Limit | 0.030 max | 1.20 max | 0.80 max | 0.035 max | 0.020 max | 24.00 – 26.00 | 6.00 – 8.00 | 3.00 – 5.00 | 0.50 max | 0.24 – 0.32 |
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Super Duplex 2507 mechanical properties
| Property | Requirement |
|---|---|
| Tensile strength | 795 MPa minimum |
| Yield strength (0.2% offset) | 550 MPa minimum |
| Elongation in 50 mm | 15% minimum |
| Hardness | 32 HRC maximum (310 HBW) |
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Super Duplex 2507 round bar: sizes and finishes
The published size range, finishes and conditions for round bar are set out on the round bars pages, which list every dimension we publish. Sizes outside the range can be produced to order; send the dimensions with your enquiry.
| Parameter | Range |
|---|---|
| Diameter | 10 mm, 300 mm |
| Shape | Round, Square, Hexagonal, Threaded |
| Tolerance | H7, H8, H9, H10 |
| Length | 5 m, 6.5 m (Customised length per requirement) |
| Bar ends | Plain, Bevelled |
| Marking | Size, Grade, Specification, Heat number |
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Standards for Super Duplex 2507 round bar
Super Duplex 2507 round bar is commonly specified to ASTM A276 and ASTM A479. Commonly specified product standards. Confirm the standard, edition and any supplementary requirements on your order; we supply to the standard you name.
Why buyers choose Super Duplex 2507 round bar
Very high strength, with a 550 MPa minimum yield strength
PREN above 40 for seawater and chloride service
Good resistance to stress corrosion cracking
Where Super Duplex 2507 round bar is used
- Subsea and offshore oil and gas piping
- Seawater cooling and firewater systems
- Desalination high-pressure pipework
- Heat exchangers in chloride service
- Chemical process equipment
What to state when you enquire for Super Duplex 2507 round bar
- Shape: round, square, hexagonal or threaded
- Diameter in mm and tolerance class, with H7 to H10 published
- Delivery condition: export bright, peeled or turned, cold drawn, centreless ground and polished, black or forged
- Length: 5 m to 6.5 m published, cut lengths to order
- Bar ends: plain or bevelled
- Marking: size, grade, specification and heat number
What to check on Super Duplex 2507 round bar before and after delivery
Check the delivery condition, diameter and straightness of Super Duplex 2507 bar against the order, and the heat number against the certificate. How machinable the bar is depends on the grade and the condition it is supplied in, so confirm the cutting data with your tooling supplier, and tell us if the part will be heat treated afterwards. Grade limits to design around: not for continuous service above about 250 degrees C and needs qualified welding procedures and control of heat input.
Export of Super Duplex 2507 round bar from India
Super Duplex 2507 round bar is exported from Mumbai to 18 confirmed markets, quoted with the Incoterm and named port.
Super Duplex 2507 compared with similar grades
Buyers who look at Super Duplex 2507 round bar usually also compare Duplex 2205 and Super Duplex S32760. The grade pages below give each one's designations, properties and limits side by side so you can choose for the service rather than the price alone.
FAQ
09Questions answered
- What does PREN above 40 mean?
- PREN is a ranking figure for pitting resistance from chromium, molybdenum and nitrogen content. Above 40 is the usual threshold for grades called super duplex.
- How does 2507 compare with 2205?
- 2507 has more chromium, molybdenum and nitrogen, so it resists chlorides better and is stronger, at a higher price.
- Is super duplex difficult to weld?
- It needs qualified procedures and controlled heat input to keep the phase balance, but it is routinely welded in offshore fabrication.
- What diameters of Super Duplex 2507 bar do you supply?
- Diameters from 10 mm to 300 mm are published for bar, in round, square, hexagonal and threaded shapes. Send the size and tolerance class and we confirm.
- Which standard applies to Super Duplex 2507 round bar?
- Super Duplex 2507 round bar is commonly specified to ASTM A276 and ASTM A479. Confirm the standard and edition on your order.
- What is the minimum yield and tensile strength of Super Duplex 2507?
- In the annealed condition, Super Duplex 2507 has a minimum yield strength of 550 MPa and a minimum tensile strength of 795 MPa, per the standard named in the table above.
- What is the UNS number and EN designation of Super Duplex 2507?
- Super Duplex Stainless Steel 2507 is designated UNS S32750 and EN 1.4410, and is also called 2507 and S32750.
- What are the main alloying elements in Super Duplex 2507?
- To the standard in the composition table, Super Duplex 2507 carries chromium 24.00 – 26.00, nickel 6.00 – 8.00 and molybdenum 3.00 – 5.00 percent by weight. Confirm the composition on the mill test certificate supplied with your material.
- Do you supply a mill test certificate with Super Duplex 2507 round bar?
- Yes, to EN 10204 3.1 as standard, showing chemistry and mechanical properties against the heat. EN 10204 3.2 with third-party inspection is available on request.
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