Duplex 2507 Stainless Steel Bar Price Per kg
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Duplex 2507 stainless steel bar price per kg is an important purchasing consideration for oil & gas, offshore, chemical processing, desalination, marine and high-corrosion engineering projects. However, UNS S32750 / EN 1.4410 is a super duplex stainless steel, so its price should not be evaluated only by comparing the price per kilogram with 304, 316L or standard duplex 2205.
The final quotation depends on the diameter, manufacturing condition, quantity, certification, testing requirements, surface finish, machining and alloy market conditions.
For buyers comparing suppliers, this guide explains the realistic price structure, specifications, standards and purchasing factors of 2507 stainless steel round bar.
What is Duplex 2507 duplex stainless steel bar?
Duplex 2507 (UNS S32750 / EN 1.4410 / X2CrNiMoN25-7-4) is a highly alloyed super duplex stainless steel featuring an austenitic-ferritic dual-phase microstructure. It contains approximately 25% chromium, 7% nickel, 4% molybdenum, and 0.3% nitrogen, with a low carbon content. It is designed to withstand high strength requirements and harsh, corrosive environments.
What standard is used for 2507 stainless steel bar?
Common standards include ASTM A276 / ASME SA276, ASTM A479 / ASME SA479 and EN 10088-3, depending on the application and purchasing specification.
Duplex 2507 Stainless Steel Bar Price per kg
The price of 2507 duplex stainless steel bars typically varies based on specifications, quantity, surface finish, and certification requirements. In terms of Chinese FOB reference prices, the cost of 2507 round bars is approximately $4.5–$7.0 per kilogram, while forged or specially processed bars may exceed $8.0 per kilogram.
Duplex 2507 (S32750) Stainless Steel Bar Price Trend
|
Product Form |
Typical Size Range | Surface / Condition | Indicative Price (USD/kg) |
|---|---|---|---|
| 2507 / UNS S32750 Super Duplex Round Bar | Ø5–500 mm | Bright / Peeled / Ground / Black | $4.5–7.0 |
| 2507 Hexagonal Stainless Steel Bar | 5–100 mm | Bright / Cold Drawn | $5.0–7.5 |
| 2507 Super Duplex Flat Bar | 3–50 × 10–200 mm | Hot Rolled / Ground | $4.8–7.2 |
| 2507 Square Stainless Steel Bar | 5–150 mm | Bright / Hot Rolled | $4.8–7.2 |
| UNS S32750 Forged Bar | Ø100–500+ mm | Forged / Solution Annealed | $5.0–8.0 |
| 2507 Duplex Hollow Bar | Customized | Solution Annealed | $5.5–8.5 |
Note: The prices above are indicative reference ranges, not fixed market quotations. Actual 2507 stainless steel bar prices depend on nickel and molybdenum costs, diameter, quantity, heat treatment, surface finish, testing, MTC requirements, machining and FOB/CIF/CFR terms.
Factors Affecting the Price of Duplex 2507 Stainless Steel Bars
The price of Duplex 2507 / UNS S32750 stainless steel bars is not determined by the base stainless-steel price alone. Because 2507 is a Super Duplex grade containing relatively high levels of chromium, nickel, molybdenum and nitrogen, its price is particularly sensitive to alloy costs, manufacturing requirements and certification.
| Price Factor | How It Affects 2507 Bar Price | Buyer Consideration |
|---|---|---|
| Nickel (Ni) Price | Higher nickel costs increase the alloy surcharge and material cost. | Check the quotation date and alloy surcharge basis. |
| Molybdenum (Mo) Price | Mo is a major cost driver because 2507 contains around 4% Mo. | Particularly important when comparing 2507 with 2205 or 316L. |
| Chromium & Nitrogen | High-alloy composition increases raw-material and production costs. | Request the chemical composition on the MTC. |
| Bar Diameter | Large-diameter bars may require forging or additional hot working, increasing processing costs. | Specify exact diameter and tolerance. |
| Production Method | Hot-rolled, forged, cold-drawn and peeled bars have different production costs. | Match the production method to the application. |
| Heat Treatment | Solution annealing and rapid cooling are essential for obtaining the required duplex microstructure. | Confirm heat-treatment condition and temperature range. |
| Surface Finish | Bright, peeled, ground and polished bars cost more than black/hot-finished bars. | Avoid paying for unnecessary surface processing. |
| Order Quantity | Larger orders generally reduce processing, setup and logistics costs per kg. | Request both trial-order and bulk pricing when appropriate. |
| Cutting / Machining | Saw cutting, CNC machining, threading or customized dimensions add processing costs. | Provide finished dimensions instead of only raw-bar dimensions. |
| Testing Requirements | PMI, UT, tensile testing, impact testing and other inspections increase the total price. | Specify mandatory tests in the RFQ. |
| Certification | EN 10204 3.1, 3.2, NACE and third-party inspection requirements can increase cost. | Confirm the exact certification level before comparing quotations. |
| Packaging | Export seaworthy packing, wooden cases and special protection add logistics costs. | Compare quotations on the same packing basis. |
| Freight & Incoterms | FOB, CFR, CIF and DDP prices include different logistics costs. | Compare quotations using the same Incoterm. |
| Market Supply & Demand | Tight availability of S32750 bar can increase lead times and prices. | Check stock availability and production lead time. |
How to Calculate the Weight of 2507 Round Bar?
For round stainless steel bar, buyers can estimate theoretical weight using:
Weight (kg/m) ≈ Diameter² × 0.00617
where diameter is in millimeters.
For example, a 50 mm diameter round bar has a theoretical weight of approximately: 50² × 0.00617 ≈ 15.43 kg/m
If the supplier quotes the material at a certain USD/kg, the approximate material value per meter can then be estimated by multiplying the theoretical weight by the quoted price.
However, actual invoiced weight can vary according to the supplier's weighing method, dimensional tolerances, cutting allowance and order conditions.
If you would like a more precise quote, please provide the following information:
the required diameter or thickness, the approximate total weight or length, and the shipping destination.
This will allow me to provide a more accurate estimate of the projected costs for your specific order.
Why Is 2507 More Expensive Than 2205?
The price of 2507 is higher than that of 2205, primarily due to its higher content of chromium, molybdenum, and nitrogen, which enhances both corrosion resistance and strength. UNS S32750 (2507) steel contains approximately 25% chromium, 4% molybdenum, and 0.3% nitrogen, whereas 2205 steel contains approximately 22% chromium, 3% molybdenum, and 0.15% nitrogen. Its Pitting Resistance Equivalent Number (PREN) is typically above 42, compared to approximately 34 or higher for 2205.
Supplier and Manufacturer of Duplex 2507 Stainless Steel Bars
With over 18 years of export experience and a client base spanning more than 60 countries, GNEE focuses on supplying stainless steel products tailored to specific requirements rather than simply offering the lowest unit price.
We supply Duplex 2507 (UNS S32750) stainless steel bars to international buyers, accommodating a wide range of diameters, lengths, surface finishes, and machining specifications in compliance with ASTM A276/A479 standards.
Duplex 2507 Stainless Steel Chemical Composition
| Element | C | Si | Mn | P | S | Cr | Ni | Mo | N | Fe |
|---|---|---|---|---|---|---|---|---|---|---|
| Composition (%) | ≤0.030 | ≤0.80 | ≤1.20 | ≤0.035 | ≤0.020 | 24.0–26.0 | 6.0–8.0 | 3.0–5.0 | 0.24–0.32 | Balance |
Duplex 2507 Stainless Steel Bar Specifications
| Product Form | Manufacturing Method | Surface Finish | Size Range | Application |
|---|---|---|---|---|
| Round Bar | Hot Rolled | Black / Pickled | Φ10–Φ300 mm | Pump shafts, fasteners |
| Precision Round Bar | Cold Drawn / Ground | Bright / Polished | Φ2–Φ100 mm | Precision valves, sensors |
| Forged Bar | Open Die / Closed Die Forged | Rough Turned | Φ200–Φ600 mm | Heavy-duty flanges, discs |
| Hexagonal Bar | Cold Drawn | Bright / Smooth | S10–S75 mm | High-strength bolts, nuts, fittings |
| Square Bar | Hot Rolled / Forged | Black / Pickled | 20 × 20–200 × 200 mm | High-strength structural components |
| Flat Bar | Slit from Plate / Hot Rolled | HRAP (Hot Rolled, Annealed & Pickled) | 20 × 3–150 × 20 mm | Marine equipment frames |
| Hollow Bar | Extruded / Machined | Annealed & Pickled | OD 30–250 mm | Bushings, sleeves |
Every batch of material comes with comprehensive quality documentation, allowing buyers to verify chemical composition, mechanical properties, heat numbers, and material traceability before or after shipment.
FAQ
What certificate should I request?
For general industrial purchasing, EN 10204 3.1 MTC is a common requirement. For critical projects, buyers may additionally request PMI, UT, NACE documentation, impact testing or third-party inspection according to the project specification.
Does 2507 stainless steel require heat treatment?
For many bar products, solution annealing followed by rapid cooling is used to obtain the required duplex microstructure and properties. Published SAF 2507 data specify solution annealing around 1050–1125°C followed by rapid cooling for relevant products.
Can 2507 be machined?
Yes, but its high strength and work-hardening characteristics make machining more demanding than machining 304 or 316L. Appropriate tooling, cutting parameters and coolant management are important.
Can 2507 stainless steel bars be forged?
Yes, 2507 stainless steel bars can be forged, and forged parts are commonly produced under specifications like ASTM A182 F53. However, because it is a super duplex alloy with high strength, hot forging requires strict temperature control and immediate post-forging heat treatment to maintain its microstructural balance and corrosion resistance.
