China Nimonic 263 Manufacturer – Custom Sizes, Fast Delivery, Competitive Price

Shanghai COCESS Special Alloys Co., Ltd.​ is a professional supplier of high-performance nickel-base and cobalt-base superalloys, offering Nimonic 263 (UNS N07263 / W.Nr. 2.4650 / China Grade GH263 approx.)​ in full product forms — sheet, plate, round bar, forged billet/ring, and matching welding consumables. All material is supplied in the solution-annealed (固溶处理) condition​ with full traceability, PMI verification, and EN 10204 3.1 / 3.2 Mill Test Report​ including heat analysis (verifying Ni/Cr/Co/Mo/Ti), tensile results, and heat treatment record.

Nimonic 263 is a γ′-precipitation hardened Ni–Cr–Co–Mo superalloy​ (nominal Ni–20Cr–20Co–6Mo–0.4Ti–≤0.15Al) qualified to BS HR 10 (Sheet/Strip)​ and cross-referenced to AMS 5872. It is the industry-preferred alloy for 650–850°C creep-resistant welded fabrications​ — aircraft engine combustor liners, transition ducts, augmentor casings — because it can be welded in the soft solution-annealed condition and then precipitation-aged in one step without strain-age cracking (SAC), unlike higher Al+Ti alloys such as René 41 or Nimonic 90.

1. Grade Cross-Reference & Standards Compliance

All COCESS shipments are matched to these specs unless otherwise agreed in writing.

2. Product Forms & Typical Size Ranges

2.1 Cold-Rolled Sheet & Strip (BS HR 10 / AMS 5872)

• Thickness: 0.3 mm – 4.0 mm​ (stock commonly: 0.5 / 0.8 / 1.0 / 1.5 / 2.0 mm)

• Width: up to 1000 mm (standard) / 1219 mm (custom cut)

• Length: 1000 – 3000 mm or coil form (strip)

• Finish: Bright annealed / Pickled & passivated

• Condition: Solution annealed @ 1120–1150°C → rapid air cool or water quench (thin gauge), soft for forming

2.2 Plate (Hot-Rolled / Mid-Thick)

• Thickness: 4.0 mm – 50 mm​ (larger on indent / made-to-order)

• Width × Length: 500×1500 mm to 1500×6000 mm

• Edge: mill edge or machined

• Supplied solution-annealed; UT per ASTM A578 Level I/II available on request

2.3 Round Bar & Forging Stock

• Diameter (Black / Rough Turned): Φ8 mm – Φ300 mm

• Precision Ground Bar: Φ10–Φ100 mm (h7/h9, Ra ≤ 1.6 µm)

• Length: 1000–6000 mm; cut-to-length or random

• Forging Billet / Block: per drawing — rounds, squares, rectangular blanks

• Ring Rolling Blanks: OD up to 800 mm (subject to ratio)

2.4 Seamless Tube / Pipe (on indent)

• OD: Φ6 – Φ114 mm | WT: 0.5 – 6.0 mm | Length ≤ 6000 mm

• Finish: Annealed, pickled or bright annealed

2.5 Welding Consumables

• Filler Wire: matching N07263 or ERNiCrMo-9 (AWS A5.14), diameters 0.8 / 1.2 / 1.6 / 2.4 mm

• Covered Electrode: ENiCrWMo (upon request)

Custom non-standard dimensions, oversize forgings, and machined preforms (rough-turned / pre-drilled) are available with lead-time quotation.

3. Material Condition & Melting Practice

• Melting Route:​ Vacuum Induction Melting (VIM) + Electro-Slag Remelting (ESR) — guarantees low S/P (S ≤ 0.008 % typical), tight Ti (0.30–0.60 %) and Mo (5.6–6.1 %) control, homogeneous γ′ precipitate potential.

• Delivery Condition:​ Solution annealed (1120–1150°C, soak per section → water quench or high-velocity air blast for thin gauge).

  Nimonic 263 is not usable at full strength until aged​ (800°C × 8 h / AC or 750–760°C × 16 h). As-delivered condition is soft (Rm ≈ 750–850 MPa) for forming / welding.

• Grain Size (Typical):​ ASTM 5–7 (sheet), ASTM 3–6 (forging stock)

• Surface Options:

  • Sheet/Plate: Descaled + pickled / Bright annealed

  • Bar: Black (as-forged), Rough turned (peeled), or Centerless ground

4. Chemical & Mechanical Conformance (Summary)

Room-Temp Mechanical Minimum (Solution-Annealed — BS HR 10 / AMS 5872):

• Tensile Strength Rm ≥ 900–930 MPa (after aging; as-SA Rm ≈ 750–850 MPa)

• Yield Strength Rp0.2 ≥ 550–620 MPa (aged); as-SA Rp0.2 ≈ 300–380 MPa

• Elongation A₅₀ ≥ 20 % (aged sheet); as-SA A₅₀ ≥ 35–45 %

• Hardness (aged): 30–36 HRC

Elevated-Temperature Tensile (Aged — Typical):​

Rm ≈ 820–880 MPa @ 650°C; ≈ 650–720 MPa @ 760°C; ≈ 520–590 MPa @ 815°C.

5. Typical Applications Supplied

6. Certification & Quality Assurance

Every shipment from Shanghai COCESS includes:

• ✅ EN 10204 3.1 MTR​ (or 3.2 with third-party witness if contracted) — Heat #, Chemistry (incl. Ti/Mo/Co), Room-Temp Tensile (SA & aged if requested), Grain Size, HT Record

• ✅ PMI Verification Report​ (XRF / OES — confirms Ni≈Bal., Cr≈20%, Co≈20%, Mo≈6%, Ti≈0.4%)

• ✅ Dimensional Inspection Report

• ✅ UT / PT / MT reports​ (on forged products or as specified — additional charge)

• ✅ Certificate of Origin / CO / Commercial Invoice / Packing List

Materials are fully traceable to melt shop with VIM+ESR pedigree.

7. Custom Services Offered

• Cut-to-size / Water-jet / Band-saw cutting​ — plate, bar, tube (minimal HAZ)

• Rough machining / Pre-machining​ — forging pre-forms to near-net shape (reduce customer scrap & tool wear)

• Third-party inspection attendance​ — SGS, TÜV, BV, Lloyd's as requested

• Export Packing​ — VCI paper + polyethylene wrap + wooden crate / pallet (seaworthy / airworthy)

8. Request a Quote

Shanghai COCESS Special Alloys Co., Ltd. maintains rotating stock of Nimonic 263 (UNS N07263 / W.Nr. 2.4650) in sheet, plate, bar, and welding consumables for quick shipment worldwide. For project pricing, availability check, legacy engine MRO cross-reference, or technical clarification (BS HR 10 / AMS 5872 compliance, aging parameter recommendation, Hastelloy X → Nimonic 263 substitution evaluation), please contact our sales desk:

Shanghai COCESS Special Alloys Co., Ltd.​

Email: sales@cocessalloys.com

Web: https://en.cocessalloys.com

Add: Shanghai, China

We also supply Haynes 188 (UNS R30188 / GH5188), Inconel 600/625/718, Incoloy 800HT, Hastelloy C-276, Monel 400/K-500 and associated welding consumables for multi-material package procurement.

This page is for informational and sourcing purposes. All values are typical; final conformance shall follow applicable ASTM / AMS / BS / GB standards and purchase order specifications.