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Shanghai COCESS Special Alloys Co., Ltd. (Shanghai Kesaishi Special Alloy) keeps Monel K‑500 (UNS N05500 / W.Nr. 2.4375 / AMS 4676) hot‑rolled round bar, forged bar, disc / ring blanks and custom forgings in Shanghai warehouse — available in Solution Annealed (ST, for in‑house aging) or Solution Annealed + Age‑Hardened (STA, YS ≥ 690 MPa / 100 ksi) condition. Stock is cut, PMI‑verified and shipped with EN 10204 3.1 MTC within days — ideal for urgent MRO, offshore tooling, pump‑shaft blank resupply and small‑batch OEM production. We support EXW, FOB Shanghai, CIF/CFR to your port and DAP where permitted, with full export documentation and seaworthy packing.
In‑Stock Product Forms & Typical Size Range (Ready to Cut)
|
Product Form |
Typical Stock / Supply Range |
Standard |
|---|---|---|
|
Hot‑Rolled / Forged Round Bar |
Diameter Φ 8–350 mm (popular Φ12/16/20/25/30/40/50/60/80/100/120/150/200 mm); Length 2–6 m or cut‑to‑length |
ASTM B865 / AMS 4676 |
|
Forged Disc / Ring / Flange Blank |
Ø up to ~1200 mm, thickness per drawing; black forged or rough turned |
ASTM B564 (shape) + B865 (chem./mech.) |
|
Step‑Shaft / Custom Forging Blank |
According to customer drawing; rough machined with UT‑prepared surfaces |
— |
|
Monel 400 (UNS N04400) Plate / Bar / Tube |
Also stocked for process‑equipment reference (heat exchangers, HF tanks, non‑mag shells) |
ASTM B127 / B164 / B165 |
Bars are black (as‑forged/HR) or rough‑turned; bright‑drawn limited sizes on request.
Plates & seamless tubes in N05500 are project‑order (4–8 wks); confirm early if needed alongside bar/forging.
Heat‑Treatment Condition — Clearly Stated on Every Quote & MTC
Solution Treated (ST): 980–1040 °C → water quench. Soft (Rp0.2 ≈ 275–380 MPa), near non‑magnetic. For customers who will machine then age in‑house (580–600 °C × 8–16 h). MTC states "Solution Annealed Only — Not Aged".
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. MTC includes aging temp/time, tensile, impact (−46 °C / −73 °C) and hardness. 110 ksi (≥ 758 MPa YS) grade available by selected mill arrangement.
Never guess: PO must specify "ST" or "ST+Aged (100 ksi YS)" — we do not ship ambiguous "K‑500 as‑rolled" without defined HT.
Value‑Added Services Included with Stock Orders
Cut‑to‑Length / Part‑Off: Saw cut to ±1–3 mm; multiple lengths from one bar with remnant ID traceability.
Rough Turning / Peeling: OD to h11/h9, remove decarb / scale; center‑drill / chamfer on request.
Forging Pre‑Prep: Rough machine draft, face, stamp sub‑piece heat number, prepare UT contact faces.
PMI Spot Check (Standard): XRF / OES confirms Ni ≈ 65 %, Cu ≈ 30 %, Al + Ti present — prevents Monel 400 or SS mix‑up.
UT Inspection: ASTM A388 Class A/B, Grade II recording on bars/forgings ≥ 50 mm dia. (or per PO).
Magnetic Permeability Test: On ST (non‑mag) orders — DC μr ≤ 1.005 typical per ASTM A342 Method B/C (reported on MTC if specified).
Certification & Export Documentation
Every shipment includes:
EN 10204 3.1 MTC — heat number, full melt chemistry (Ni 63–70 %, Cu bal., Al 2.30–3.15 %, Ti 0.35–0.85 %, Fe ≤ 2.0 %, C ≤ 0.25 %), aged tensile (Rm ≥ 965 / Rp0.2 ≥ 690 MPa), elongation (≥ 15 %), Charpy impact if specified, hardness, solution & aging parameters, grain size remark.
EN 10204 3.2 available — witnessed & signed by SGS / TÜV / BV / DNV.
Commercial Invoice, Packing List, Certificate of Origin (CCPIT), dimension / weight summary, HS code advisory.
Typical Lead Times (from Shanghai Stock)
|
Item |
Typical Despatch |
|---|---|
|
Stock bar — cut / PMI / tag only |
1–3 working days |
|
Stock bar — rough turn + UT + PMI |
3–5 working days |
|
Custom forging from stock billet |
10–20 working days (drawing review → forge → HT → UT → finish) |
|
Mill order non‑stock size |
4–8 weeks — quoted per inquiry |
We coordinate with your forwarder or recommend carriers for LCL, FCL (20'/40') and air freight; assist with customs paperwork pre‑check.
Why Global Buyers Source Monel K‑500 from Shanghai COCESS
Stock Breadth: Φ12–200 mm bar & forging billet on hand — cuts weeks off mill lead time.
Condition Clarity: ST vs. ST+Aged explicitly stated & certified — no "hope it's aged" uncertainty.
Real Data MTC: Actual melt analysis + actual tensile — not "typical range" only.
Traceability: Heat number on MTC ↔ steel stamp on bar ↔ sub‑piece tag ↔ packing list — closed loop.
Technical Support: Age‑hardening recipe (580–600 °C × 8–16 h), non‑mag (ST) vs. aged selection for tool designers, ERNiCu‑7 (AWS A5.14) filler recommendation.
Request Monel K‑500 Stock List & Quotation
Please advise:
Grade — Monel K‑500 / UNS N05500 + Form (Bar / Forging / Disc) + Dimensions (Dia. × Length or Forging Dwg. No.) + Qty + Condition (Solution Annealed ONLY or Solution + Aged with YS grade — 100 ksi or 110 ksi) + Destination Port + Certification (3.1 or 3.2, TPI if required) + Any UT / Mag‑Perm / Hardness Cap Requirement
Shanghai COCESS Special Alloys Co., Ltd.
Email：sales@cocessalloys.com
