Monel K-500 (UNS N05500) is a precipitation-hardening nickel-copper alloy. It keeps the seawater corrosion resistance of Monel 400 while γ′ ageing with aluminium and titanium raises strength two to three times, suiting high-strength marine shafts, drill collars, scrapers and springs.
As a manufacturer and global exporter of special alloys since 2012, Shanghai Hangbo Alloy Group Co., Ltd. supplies Monel K-500 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), forgings & rolled rings (up to 7500 kg, 3500 mm OD), machined parts to your drawings — all with EN 10204 3.1 certified material test reports.
Monel K-500 Chemical Composition (wt%)
| Element | Content (wt%) | Element | Content (wt%) |
|---|---|---|---|
| Ni (镍) | ≥ 63.0 | Mn (锰) | ≤ 1.50 |
| Cu (铜) | 27.0–33.0 | C (碳) | ≤ 0.18 |
| Al (铝) | 2.30–3.15 | Si (硅) | ≤ 0.50 |
| Ti (钛) | 0.35–0.85 | S (硫) | ≤ 0.010 |
| Fe (铁) | ≤ 2.0 |
Monel K-500 Mechanical Properties
| Property | Value |
|---|---|
| Tensile strength (Rm) | ≥ 965 MPa (aged) |
| Yield strength (Rp0.2) | ≥ 690 MPa (aged) |
| Elongation (A) | ≥ 20 % |
| Hardness | ≥ 27 HRC |
| Density | 8.44 g/cm³ |
| Melting range | 1315–1350 °C |
| Thermal conductivity | 17.5 W/m·K |
| Young's modulus | 179 GPa |
| Max service temperature | 600 °C |
Key Advantages
- Age-hardened yield up to 690 MPa, about three times Monel 400
- Retains seawater and HF acid corrosion resistance
- Non-magnetic in the aged condition — ideal for non-magnetic drill collars
- Good wear and erosion-corrosion resistance
Relevant Standards
- ASTM B865
- ASTM B127
- AMS 4676
- NACE MR0175 / ISO 15156
- UNS N05500
Typical Applications
- Non-magnetic drill collars and MWD instrument housings
- Marine pump shafts, propeller shafts and scrapers
- Oil and gas packers, valve stems and springs
- Paper machine doctor blades
- High-strength fasteners
Why Buy from Hangbo Alloy?
- Factory-direct manufacturer — founded 2012, headquartered in Shanghai Qingpu
- Full product range — bar, plate, sheet, strip, tube, forging, welding wire, flanges and machined parts
- Certified quality — ISO 9001:2015, GB/T 19001-2016, GJB 9001C-2017, EN 10204 3.1 mill test certificates with third-party inspection (SGS / BV / TUV) available on request
- Complete mill documentation — chemical analysis, mechanical test, ultrasonic test (UT), hardness and grain-size reports with every shipment
Contact Us — Shanghai Hangbo Alloy Group Co., Ltd.
Shanghai Hangbo Alloy Group Co., Ltd.
📍 No. 388 Songhuang Road, Qingpu District, Shanghai, China
📞 Tel / WhatsApp: +86 15618279078
✉️ Email: demi@nickel-alloy.com
🕒 Available 24 hours a day, 7 days a week — enquiries answered around the clock.
Send your drawing or enquiry (grade, form, size, quantity, standard) for a same-day quotation.
Frequently asked questions
What heat treatment does Monel K-500 use?
A typical cycle is solution annealing at 980 °C with rapid cooling, then ageing at 593–607 °C for 16 hours with furnace cooling (about 10 °C/h) to 482 °C followed by air cooling to reach standard aged properties. Stress relieving, when needed for stress-corrosion control, is usually done at 552–593 °C.
What forms and sizes are available?
We supply Monel K-500 as round bars (φ2–600 mm, up to 12 m), plates & sheets (0.5–100 mm thick, up to 2500 mm wide), seamless tubes & pipes (φ6–630 mm OD, 0.5–40 mm wall), forgings & rolled rings (up to 7500 kg, 3500 mm OD), machined parts to your drawings. Custom lengths, tolerances and machining to drawing are available on request.
What is the MOQ and lead time?
MOQ is flexible — trial orders from a single piece are welcome. Stock sizes ship in 3–7 days; custom forgings and machined parts typically 15–35 days depending on quantity and process.
Can you provide third-party inspection and shipping to my port?
Yes. SGS / BV / TUV or your nominated inspector can witness all tests before shipment. Full export documentation is provided, and we ship worldwide by sea or air on FOB, CIF or DDP terms.