TorqBolt supplies Incoloy 925 (UNS N09925) sheet and strip per ASTM B983 Standard Specification for Precipitation-Hardened UNS N09925 Sheet, Plate and Strip. Sheet is cold-rolled to a No. 2B or polished finish in either Class 1 (solution-annealed only) or Class 2 (solution-annealed and aged) condition. Used for pressure-vessel internals, cladding sheet, transition pieces, formed components, gasket facings, valve diaphragms, instrumentation enclosures and seam-welded pipe / tube strip stock. The cold-rolled annealed (BA) finish provides the bright reflective surface specified for sanitary / hygienic applications. Every order ships with EN 10204 3.1 manufacturer's MTC documenting actual heat-lot chemistry, mechanical results and heat-treatment cycle vs ASTM B983, API 6A, NACE MR0175 requirements; 3.2 with TPI witness on request.
Need Incoloy 925 sheet or strip? Email info@torqbolt.com with thickness, sheet size or coil width, finish, condition (Class 1 or Class 2) and MTC level. WhatsApp +91-22-66157017.
Sheet & Strip Sizes
| Form | Thickness | Width | Length / Coil |
|---|---|---|---|
| Sheet (cut) | 0.5 mm to 5 mm | up to 1500 mm | 2000 mm to 6000 mm length |
| Strip (in coil) | 0.1 mm to 5 mm | 50 mm to 1500 mm | up to 5000 kg coil weight |
| Foil (precision strip) | 0.025 mm to 0.1 mm | up to 600 mm | Slit-edge coil to 500 kg |
| Slit strip | 0.1 mm to 5 mm | 3 mm to 200 mm (slit from coil) | Coil per customer requirement |
Surface Finishes
| Finish | Description | Typical Use |
|---|---|---|
| 2D | Cold-rolled, annealed, mildly polished, matt grey | General fabrication; no finish-critical surface |
| 2B | Cold-rolled, annealed, light-pass polished, light reflective | Standard sheet finish; pressure-vessel internals |
| BA (bright annealed) | Cold-rolled, controlled-atmosphere annealed, mirror-like | Sanitary / hygienic / decorative applications |
| #4 satin | Polished with #150 grit abrasive, brushed appearance | Architectural / visible surfaces |
| #8 mirror | Polished to optical-grade, near-mirror reflectivity | Decorative / specialised optical surfaces |
Mechanical Properties (ASTM B983)
| Property | Class 1 (Annealed only) | Class 2 (Annealed + Aged) |
|---|---|---|
| Tensile Strength min | 110 ksi (760 MPa) | 165 ksi (1140 MPa) |
| 0.2% Yield Strength min | 45 ksi (310 MPa) | 110 ksi (760 MPa) |
| Elongation in 4D min | 30% | 18% |
| Hardness max (sour service) | 32 HRC | 35 HRC |
| Bend test (sheet) | 180° over 1t mandrel without cracking | 180° over 2t mandrel without cracking |
Sheet thinner than 5 mm permits sub-size tensile specimens per ASTM E8 Annex A1. Bend test per ASTM E290 is mandatory for sheet to verify formability. See full mechanical properties page for elevated-temperature data.
Sheet & Strip Applications
- Pressure-vessel internals: Demister pads, baffles, vortex breakers in sour-service separators
- Cladding sheet: Cladding of carbon-steel substrate (3–6 mm clad layer) for cost-effective sour-service vessels via explosive bonding or roll bonding
- Transition pieces: Welded transitions between dissimilar materials in piping systems
- Formed components: Cones, dishes, rolled cylinders for downhole tool bodies
- Gasket facings: Sour-service flange gasket facings; spiral-wound gasket inner / outer rings
- Valve diaphragms: Diaphragm valves and bellows seals in sour service
- Instrumentation enclosures: Sour-service pressure-instrument housings, transmitter enclosures
- Welded-pipe strip stock: Source strip for ASTM B704 welded pipe and tube
- Spring strip: Cold-rolled aged strip for high-strength corrosion-resistant springs
- Foil for thin-section bellows / expansion joints: Multi-ply welded bellows in sour service
- Marine cladding sheet: Splash-zone protection on offshore structures (see marine applications)
Sour-Service Compliance
Incoloy 925 sheet and strip is qualified for sour service per NACE MR0175 / ISO 15156-3 Table A.10 with the standard envelope (1000 psi H₂S, 400°F, chloride to saturation, 35 HRC max in Class 2 condition). NACE-stamped MTC included on every sour-service sheet order.
Documentation Package
- EN 10204 3.1 manufacturer's MTC (3.2 with DNV / Bureau Veritas / Lloyd's / TUV witness on request)
- Heat-lot chemistry vs UNS N09925 limits ASTM B983
- Tensile + hardness results per heat / per heat-treatment lot per thickness
- Bend test per ASTM E290 (sheet)
- Heat-treatment furnace chart-recorder traces (anneal + age cycles for Class 2)
- Microhardness per ASTM E384 (sheet thinner than 5 mm)
- NACE MR0175 Table A.10 reference (sour-service orders)
- NDE results: liquid penetrant on request for thicker sheet
- Sheet / coil marking: heat number, UNS N09925, ASTM B983, Class 1/2, thickness × W × L
Frequently Asked Questions
What's the difference between sheet and strip? The distinction is by width and supply form: sheet is supplied as cut flat product (typically >600 mm wide); strip is supplied in coil (typically ≤1500 mm wide, in coil weights up to 5000 kg). Both follow the same ASTM B983 chemistry and mechanical specifications. Strip is usually narrower and used for further fabrication (welded pipe / tube manufacture, formed components, springs).
Can Incoloy 925 sheet be supplied with BA (bright-annealed) finish? Yes, BA finish is a controlled-atmosphere annealing process that yields a near-mirror surface without polishing. Used for sanitary applications (food / pharma processing) and for decorative architectural work. BA finish is supplied in Class 1 (annealed only) condition.
What's the typical lead time for Incoloy 925 sheet? Standard sheet (1 mm to 5 mm thickness, 1000×2000 mm size): 8–12 weeks. Thinner foil or wider sheet: 12–16 weeks. Slit strip from coil stock: 4–6 weeks for held coils. The bottleneck for Class 2 (aged) sheet is the 18-hour age cycle.
Can the sheet be formed without cracking? Yes, in Class 1 (annealed) condition, Incoloy 925 sheet is highly formable (180° bend over 1t mandrel without cracking). For deep-drawn / spun parts, multi-step forming with intermediate annealing is recommended. Aged Class 2 sheet has limited formability (180° over 2t mandrel) and should not be used for parts requiring significant forming.
Related Products
- Incoloy 925 plate, thicker flat product (5–50 mm)
- Incoloy 925 pipe, welded pipe made from B983 strip
- Incoloy 925 tube, small-diameter tubing
- Incoloy 925 bar, ASTM B805 round / hex / square
- Incoloy 925 forgings, flanges, fittings
- Incoloy 925 wire, cold-drawn wire from strip / billet
Request a Quote
For Incoloy 925 sheet or strip with full MTC documentation:
- Email: info@torqbolt.com
- Phone: +91-22-66157017
- WhatsApp: +91-22-66157017
Specify thickness, width × length (for sheet) or width × coil weight (for strip / coil), quantity, condition (Class 1 annealed or Class 2 aged), surface finish (2D / 2B / BA / #4 / #8), applicable standards (ASTM B983, API 6A, NACE MR0175, NORSOK M-630 MDS A30, ASME II Part B / Section VIII), required NDE and MTC level (3.1 or 3.2 with TPI witness).
References: ASTM B983 Standard Specification for Precipitation Hardened UNS N09925 Plate, Sheet, and Strip; Special Metals Corporation INCOLOY® alloy 925 Technical Bulletin; NACE MR0175 / ISO 15156-3 Table A.10; ASTM A480 (general flat-product requirements); ASTM E290 (bend test); ASTM E384 (microhardness). ASME Section II Part B (SB-983); ASME Section VIII Div 1. INCOLOY® is a registered trademark of Special Metals Corporation.
