- Home
- Round Bar
- Inconel Round Bars
- Incoloy 926 Round Bars & Rods
Incoloy 926 Round Bars & Rods - ASTM B649 UNS N08926 | Supplier in Mumbai, India
Nicorex Alloys is an ISO 9001 / ISO 14001 certified supplier of Incoloy 926 round bars and rods based in Mumbai, India. The company provides high-performance metallurgical solutions to the international industrial community through outstanding export performance.
Alloy 926 (UNS N08926, W.Nr. 1.4529, NAS 255NM) is a super-austenitic stainless steel containing 6-7% Mo, 19-21% Cr, 24-26% Ni, 0.5-1.5% Cu, and 0.15-0.25% N with an iron base. Unlike traditional nickel alloys, iron is the base element in 926. Bar stocks are in accordance with ASTM B649/ASME SB649 and have approvals of VdTÜV.
The defining metric is a PREN (Pitting Resistance Equivalent Number) of approximately 47. It provides reliable Critical Pitting Temperature (CPT) that reaches 65-70°C in 6% FeCl₃ per ASTM G48. Nitrogen at 0.15-0.25% strengthens the austenite matrix, raising minimum yield to 300 MPa (43.5 ksi) with 40% elongation in the solution-annealed condition (1150-1200°C / 2100-2192°F, water quench). The melting range falls between 1320-1390°C. Impact toughness holds at ≥125 J/cm² even at -196°C, confirming cryogenic suitability.
This makes 25-6MO bar a competitive substitute for higher nickel alloys in chloride and seawater environments. Diameters span 5-500 mm, and lengths are 1-12 m. Forms: round, hex, flat, square bars, forged bars. Temperature: -196°C to 400°C (VdTÜV approved). We can supply Cronifer 1925 hMo bar stock with EN 10204 3.1 mill test certificates and PMI reports.
Incoloy 926 Round Bar Specifications
Incoloy 926 specifications, including standards, dimensions, forms, conditions and other required parameters, have been provided in the table given below:
| Standards | ASTM B649 / ASME SB649; ASTM B472 / ASME SB472 |
|---|---|
| Diameter | 5 – 500 mm (≤300 mm per VdTÜV 502) |
| Length | 1 – 12 m, cut-to-length |
| Condition | Solution Annealed (1150-1200°C, water quench) |
| Surface | Black, Pickled, Bright, Machined |
| Forms | Round, Hex, Flat, Square, Forged, Rectangular, Rod |
Chemical Composition of Incoloy 926 Round Bar
Incoloy 926 stock is available according to VdTÜV 502 and ASTM B649 specifications to guarantee the correct UNS N08926 chemical composition.
| Iron (Fe) | Nickel (Ni) | Chromium (Cr) | Molybdenum (Mo) | Nitrogen (N) | Copper (Cu) | Carbon (C) | Manganese (Mn) | Silicon (Si) | Sulphur (S) |
|---|---|---|---|---|---|---|---|---|---|
| Balance | 24.0 – 26.0 | 19.0 – 21.0 | 6.0 – 7.0 | 0.15 – 0.25 | 0.5 – 1.5 | 0.02 max | 2.0 max | 0.5 max | 0.010 max |
Mo at 6-7% and N at 0.15-0.25% yield a PREN = %Cr + 3.3(%Mo) + 16(%N) ≈ 47. Nitrogen also stabilises the austenite phase and reduces intermetallic formation during thermal processing. The 0.02% C max keeps the alloy resistant to sensitisation.
Mechanical Properties of ASTM B649 Incoloy 926 Bar
The following table provides information about the mechanical properties of solution-annealed Incoloy 926 bars with a diameter, according to VdTÜV 502 specifications.
| Yield Rp0.2 (min) | Yield Rp1.0 (min) | Tensile Strength | Elongation (min) | Impact, 20°C (min) | Impact, -196°C (min) |
|---|---|---|---|---|---|
| 300 MPa (43.5 ksi) | 340 MPa (49.3 ksi) | 650 MPa (94 ksi) | 40% | ≥150 J/cm² | ≥125 J/cm² |
Elevated-temperature Rp0.2: 230 MPa at 100°C, 190 MPa at 200°C, 170 MPa at 300°C, 160 MPa at 400°C. Yield exceeds 904L (240 MPa) due to nitrogen solid-solution strengthening. Alloy 926 is not age-hardenable.
Physical Properties of Incoloy 926 Bar & Rod
Critical physical constants for Incoloy 926, including density and melting point, are listed here to help you calculate operational weight limits.
| Density | Melting Range | Elastic Modulus | Thermal Conductivity (20°C) | Thermal Expansion (20-100°C) | Electrical Resistivity (20°C) | Magnetic Permeability |
|---|---|---|---|---|---|---|
| 8.1 g/cm³ | 1320-1390 °C | 193 GPa | 12.0 W/m·°C | 15.0 × 10⁻⁶ /°C | 96 µΩ·cm | 1.001 at 20°C |
Incoloy 926 Round Bar Equivalent Grades
The following chart provides varying designations for Incoloy 926 (UNS N08926, W.Nr.). 1.4529, NAS 255NM) and some other well-known designations that are used worldwide.
| UNS | Werkstoff Nr. | EN |
|---|---|---|
| N08926 | 1.4529 | X1NiCrMoCuN25-20-7 |
Get Incoloy 926 Round Bars at Competitive Prices
Available Forms of Incoloy 926 Bar Stock
Alloy 926 bar forms, all solution annealed:
Incoloy 926 Round Bar
Alloy 926 Hex Bar
Incoloy 926 Flat Bar
Incoloy 926 Forged Bar
UNS N08926 Square Bar
Incoloy 926 Bar
Incoloy 926 Rectangular Bar
Incoloy 926 Rods
Machining, Hot Working & Welding of Incoloy 926 Round Bar
Alloy 926 work-hardens faster than standard austenitic grades due to Mo and N content. Use rigid setups, carbide tooling, and generous coolant. Plan intermediate annealing for cold reductions above 15%.
Hot work at 900-1200°C. Place bars in a furnace already at 1200°C. Cool rapidly in water or air after forming. Follow with solution annealing at 1150-1200°C and water quench. No ageing treatment applies; 926 is not precipitation-hardenable.
Weld by GTAW, GMAW, SMAW, or SAW using overmatching fillers: INCONEL 625, C-276, or INCO-WELD 686CPT to maintain pitting resistance at the weld. Minimise dilution with controlled torch technique and larger root openings.
Industries Using Incoloy 926 Round Bar & Rod
Following are some of the industries where Incoloy 926 Round Bars are primarily used.
-
Condenser tube support bars and RO equipment shafts; CPT of 65–70°C exceeds all offshore specifications for chloride attack and crevice corrosion.
-
Bleach plant bars and ClO₂ washer rods.
-
H₂SO₄ evaporator bars and H₃PO₄ plant equipment shafts.
-
Platform service water supports and splash-zone structural bars (NACE MR0175).
-
Service water piping supports and FGD scrubber internals; MIC (microbiologically influenced corrosion) resistance is a key differentiator.
-
Brine handling system rods and salt plant evaporator bars.
How to Order Incoloy 926 Round Bar
To place an order for Incoloy 926 round bars, kindly provide the following 12 pieces of information:
- Product Form: Round Bar, Hex Bar, Flat Bar, Wire
- Dimensions: Diameter × Length in mm or inches
- Material Grade: Incoloy 926 / UNS N08926
- Standard: ASTM B649 / ASME SB649
- Surface Finish: Black, Bright, Polished, Centreless Ground, Peeled
- Condition: Solution Annealed
- Tolerance: h9, h11 or as per requirement
- Quantity: number of pieces, kg, or MT
- Additional Requirements: NACE MR0175 compliance, specific heat numbers, sour gas / offshore service
- Documentation: MTC 3.1 per EN 10204, PMI report, third-party inspection certificate
- Packaging: Standard wooden box / export-grade sea-worthy packing / ISPM 15 compliant
- Delivery destination: domestic / international
Frequently Asked Questions
How Does Incoloy 926 Differ from 904L for Round Bar Applications?
Alloy 926 has higher Mo (6-7% vs 4-4.5%) and nitrogen (0.15-0.25% vs none), yielding a PREN of 47 vs 36 and higher yield (300 vs 240 MPa). It is the direct upgrade from 904L where aggressive chloride pitting demands more resistance.
Can Incoloy 926 Bar Be Used at Cryogenic Temperatures?
Yes. VdTÜV 502 approves use from -196°C to 400°C. Impact toughness at -196°C is ≥125 J/cm², confirming suitability for LNG and cryogenic service.
What is the Difference Between ASTM B649 and ASTM B472 for Incoloy 926 Bar?
B649 covers cold-worked and hot-finished bar, rod, and wire. B472 covers bars for forging applications. Both reference UNS N08926.
What is the Price of Incoloy 926 Round Bar per kg in India?
Priced between 316L/904L and higher-nickel alloys (825, C-276). Cost depends on diameter, quantity, and Mo/Ni market rates. Contact Nicorex Alloys for a quotation.