Shanghai COCESS Special Alloys Co., Ltd. (Shanghai Kesaishi Special Alloy) is a professional supplier and exporter of Monel K‑500 (UNS N05500 / W.Nr. 2.4375 / AMS 4676) round bar, forged rod, disc/ring blanks and custom forgings for marine, offshore, oilfield tool and chemical process applications. All material is sourced from qualified mills, fully traceable, and supplied in solution‑annealed (ST) or solution‑annealed + age‑hardened (STA) condition per ASTM B865 / ASME SB865, with EN 10204 3.1 Mill Test Certificates as standard and 3.2 with third‑party inspection (SGS / TÜV / BV / DNV) available on request. We support global shipment — EXW Shanghai, FOB Shanghai, CIF/CFR to your discharge port, or DAP where permitted — with full export documentation and seaworthy packing.

Monel K‑500 (UNS N05500) Stock Forms & Supply Scope
|
Product Form |
Typical Supply Range |
Governing Standard |
|---|---|---|
|
Hot‑Rolled / Forged Round Bar |
Diameter Φ8 – Φ350 mm (common Φ12/16/20/25/30/40/50/60/80/100/120/150/200 mm); Length 2000–6000 mm or cut‑to‑length |
ASTM B865 (rod/bar); AMS 4676 (aerospace grade) |
|
Forged Disc / Ring / Flange Blank |
Ø up to ~1200 mm, thickness per drawing; rough‑machined or as‑forged |
ASTM B564 (N05500 forging spec — referenced for shape/dim; B865 for chem/mech) |
|
Custom Forgings / Step‑Shaft Blanks |
Per customer drawing; rough turned, UT inspected |
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|
Also available on inquiry:Monel 400 (UNS N04400) plate, sheet, bar, seamless tube & pipe for process equipment reference |
— |
ASTM B127 / B164 / B165 |
Heat Treatment Conditions Supplied:
Solution Treated (ST): 980–1040°C × soak → water quench. Soft (Rp0.2 ≈ 275–380 MPa), near non‑magnetic — for customers performing in‑house aging after machining.
Solution Treated + Aged (STA): ST + 580–600°C × 8–16 h air cool → Rp0.2 ≥ 690 MPa (100 ksi grade), Rm ≥ 965 MPa, hardness 27–35 HRC — ready for installation. 110 ksi (≥758 MPa YS) grade available by selected heat / mill arrangement.
Certification & Quality Assurance — What You Receive
Every shipment is accompanied by full traceability documents:
EN 10204 3.1 MTC (standard):
Heat / Cast Number — physically tagged / stamped on each bar or forging, cross‑referenced on delivery note.
Full Melt Chemistry (Ni 63–70%, Cu Bal., Al 2.30–3.15%, Ti 0.35–0.85%, Fe ≤ 2.0%, C ≤ 0.25%, etc.) — actual values, not "typical range".
Mechanical Test Results — tensile (Rm ≥ 965 MPa), yield (Rp0.2 ≥ 690 MPa or ≥ 758 MPa if 110 ksi grade), elongation (≥ 15%), charpy impact if specified (typically @ −46°C / −73°C).
Heat Treatment Record — solution anneal temperature/time + aging temperature/time (for ST+Aged condition).
Grain Size / Surface Condition remark.
EN 10204 3.2 (on request): Signed/witnessed by appointed TPI agency (SGS / TÜV / BV / DNV).
PMI Verification: XRF or OES spot check before despatch confirming Ni≈65%, Cu≈30%, Al+Ti present — guards against mix‑up with Monel 400 or stainless grades.
UT Report: ASTM A388 Class A/B, typically Grade II recording for bars/forgings ≥ 50 mm dia. (or per PO).
Additional Export Docs: Commercial Invoice, Packing List, Certificate of Origin (CCPIT), magnetic permeability test report if specified for ST non‑mag condition.
Export Packing, Incoterms & Lead Time
Bars: Hex‑strapped bundle, end‑capped, anti‑rust coated, tag showing heat number; VCI paper wrap + woven sleeve or plywood crate.
Forgings / Discs: Individual bubble wrap + plywood case / steel‑banded wooden crate with skid; stencil‑marked PO#, heat number, dims, net/gross weight, "KEEP DRY / FRAGILE".
Incoterms Supported: EXW Shanghai, FOB Shanghai, CIF / CFR to your port, DAP (carrier network permitting).
Lead Time (typical from Shanghai stock):
Stock bar in ST or ST+Aged — 3–7 working days ex‑warehouse (cut‑to‑length / PMI / UT adds 1–2 days).
Custom forging from stock billet — 10–20 working days (drawing review → die/prep → forge → HT → UT → finish).
Mill order (non‑stock size) — advised per inquiry (typically 4–8 weeks).
We coordinate with your nominated forwarder or recommend reliable freight partners for LCL, FCL (20'/40') and air freight; assist with HS code advisory and customs paperwork review.
Typical Export Destinations & Project Types
???????? USA / ???????? Canada: Oilfield tool shops — ST or ST+Aged K‑500 bar for MWD/LWD tool bodies, lock mandrels; full MTC + UT + mag‑perm test (ST cond.); AMS 4676 cross‑reference provided.
???????? EU (Germany / Netherlands / Norway): Offshore supplier — seawater pump shaft blanks, valve stem stock; EN 10204 3.1 / 3.2, REACH SVHC declaration (< 0.1%), CE mark advisory if needed.
???????? Australia / SE Asia: Marine / Navy repair yard — propeller shaft sleeve blanks, non‑mag fastener stock; PMI + MTC + CO.
???????? Middle East (UAE / Saudi): Process plant MRO — agitator shaft blanks in sour‑trace environment (low H₂S, per ISO 15156 review); hardness cap (≤35 HRC) noted on MTC.
Why Global Buyers Choose Shanghai COCESS as Their Monel K‑500 Supplier
Condition Clarity: Explicit supply of ST (for in‑house aging) or ST+Aged (with certified ≥690 MPa YS) — no ambiguity on heat treatment status.
Traceability Guarantee: Actual melt analysis + actual tensile values on MTC — no "typical only" certificates.
Stock Readiness: Common diameters (Φ12–200 mm) of bar and forging billet held in Shanghai warehouse — short lead vs. mill 8–12 week rolling schedules.
Technical Backup: Assistance with age‑hardening temperature/time recommendation, non‑mag (ST) vs. aged selection for tool designers, weld filler advice (ERNiCu‑7 / AWS A5.14).
Transparent Export Pricing: Itemized quote covering base material, cutting/machining, UT/PMI, export packing — no hidden charges.
Proven Export Record: Regular shipments to North America, Europe, Middle East and Asia with positive feedback on documentation accuracy and on‑time delivery.
Request Monel K‑500 Export Quotation & Stock Status
Please advise:
Grade (Monel K‑500 / UNS N05500) + Form (Bar / Forging / Disc) + Dimensions (Diameter × Length or Forging Drawing №) + Quantity + Condition (Solution Annealed Only OR Solution + Aged with YS grade — 100 ksi or 110 ksi) + Destination Port + Certification Level (3.1 or 3.2, TPI if required) + Any UT / Mag‑Perm / Hardness Cap Requirement
Shanghai COCESS Special Alloys Co., Ltd.
Website: https://en.cocessalloys.com
Email: sales@cocessalloys.com