Monel Bars & Rods
Monel Alloys bars & rods supplied to ASTM B164 from our Mumbai stockyard. Monel is a nickel-copper alloy, roughly 67% nickel and 30% copper, with outstanding resistance to seawater, brine and hydrofluoric acid. It retains strength and toughness from cryogenic temperatures up to about 500°C. Monel 400 is the standard grade; K-500 is precipitation hardened for roughly three times the yield strength.
Governing Standards for Monel Bars & Rods
State the standard on your enquiry and we will confirm stock against it.
| Standard | Covers |
|---|---|
| ASTM B164 | Alloy 400 and K-500 bar and rod |
Monel Chemical Composition (%)
Composition and mechanical values are the limits set by the governing ASTM specification and are given for reference. The mill test certificate supplied with your consignment carries the actual heat analysis.
| Element | Monel 400 | Monel K-500 |
|---|---|---|
| Nickel | 63.0 min | 63.0 min |
| Copper | 28.0 – 34.0 | 27.0 – 33.0 |
| Iron | 2.50 max | 2.00 max |
| Manganese | 2.00 max | 1.50 max |
| Aluminium | — | 2.30 – 3.15 |
| Titanium | — | 0.35 – 0.85 |
| Carbon | 0.30 max | 0.25 max |
| Sulphur | 0.024 max | 0.010 max |
Monel Bars & Rods Specifications
Monel Bars & Rods — Chemical Composition
| Grade | C | Mn | P | S | Si | Cr | Mo | Other |
|---|---|---|---|---|---|---|---|---|
| P1 / F1 | 0.10–0.20 | 0.30–0.80 | 0.025 | 0.025 | 0.10–0.50 | — | 0.44–0.65 | — |
| P5 / F5 | 0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50 | 4.00–6.00 | 0.45–0.65 | — |
| P9 / F9 | 0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.25–1.00 | 8.00–10.00 | 0.90–1.10 | — |
| P11 / F11 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50–1.00 | 1.00–1.50 | 0.44–0.65 | — |
| P22 / F22 | 0.05–0.15 | 0.30–0.60 | 0.025 | 0.025 | 0.50 | 1.90–2.60 | 0.87–1.13 | — |
| P91 / F91 | 0.08–0.12 | 0.30–0.60 | 0.020 | 0.010 | 0.20–0.50 | 8.00–9.50 | 0.85–1.05 | V 0.18–0.25, Nb 0.06–0.10, N 0.03–0.07 |
Note: Per ASTM A335 (pipe) and ASTM A182 (forgings). Chromium and molybdenum content is what sets creep strength and high-temperature service limits.
Monel Bars & Rods — Mechanical Properties
| Grade | Tensile Strength (min) | Yield Strength (min) | Elongation (min) | Typical max service temp. |
|---|---|---|---|---|
| P1 | 380 MPa (55 ksi) | 205 MPa (30 ksi) | 30% | ≈ 480 °C |
| P5 | 415 MPa (60 ksi) | 205 MPa (30 ksi) | 30% | ≈ 620 °C |
| P9 | 415 MPa (60 ksi) | 205 MPa (30 ksi) | 30% | ≈ 650 °C |
| P11 | 415 MPa (60 ksi) | 205 MPa (30 ksi) | 30% | ≈ 565 °C |
| P22 | 415 MPa (60 ksi) | 205 MPa (30 ksi) | 30% | ≈ 595 °C |
| P91 | 585 MPa (85 ksi) | 415 MPa (60 ksi) | 20% | ≈ 650 °C |
Note: Specified minimum values per ASTM A335 in the normalised and tempered condition. P91 requires tightly controlled heat treatment to achieve its properties.
Monel Bars & Rods — Size Range & Supply Condition
| Parameter | Range |
|---|---|
| Round bar diameter | 3 mm to 500 mm |
| Square bar | 4 mm to 100 mm |
| Hex bar across flats | 2 mm to 100 mm |
| Flat bar | 3 mm to 100 mm thick × 10 mm to 500 mm wide |
| Length | 100 mm to 6000 mm, or cut to length |
| Condition | Hot rolled, forged, cold drawn, centreless ground, peeled, polished, black |
| Standards | ASTM A276 / A479 / A484 / A582, ASTM A182 (forged), ASTM B164 / B166 / B446 (nickel) |
Monel Bars & Rods — Ordering & Supply
| Parameter | Detail |
|---|---|
| Minimum order quantity | 5 kg (mixed sizes within a grade can be combined to reach the MOQ) |
| Price basis | Ex-works Mumbai, FOB or CIF — quoted per kg, per metre or per piece depending on the form |
| Lead time | Ready stock dispatched in 1–3 working days; mill orders typically 2–6 weeks |
| Certification | Mill test certificate to EN 10204 3.1 as standard; 3.2 with third-party witness, IBR and NACE MR0175 on request |
| Testing available | PMI, IGC (ASTM A262), hydrostatic, ultrasonic, radiographic, impact and hardness testing |
| Third-party inspection | Bureau Veritas, TÜV, DNV, SGS, Lloyd's Register, Intertek, RITES and client/EPC inspection |
| Packing | Wooden crates or pallets, plastic caps on pipe ends, VCI wrapping where required, seaworthy export packing |
| Payment terms | Advance, against proforma invoice, or LC at sight for export orders |
| Supply area | Across India and export to the Middle East, Europe, the USA, Africa and South East Asia |
| Product form | Bars |
Note: Cut lengths, non-standard sizes and special certification are available on request. Prices are quoted against grade, size, schedule and quantity.
Values shown are the specified minima and maxima published in the governing standards and are given for guidance. The mill test certificate supplied with your consignment reports the actual results for that heat.
When to specify Monel for bar work
Choose Monel 400 for seawater handling, brine, hydrofluoric acid and alkalis, where it outperforms stainless steel by a wide margin. Choose K-500 where the same corrosion resistance is needed together with high strength and galling resistance — pump shafts, valve stems, fasteners and propeller shafts.
Products in this range
Monel in other forms
Full composition, properties and equivalents on the Monel Alloys grade page.
Frequently Asked Questions
- What is the difference between Monel 400 and K-500?
- K-500 adds aluminium and titanium and is precipitation hardened, which raises minimum yield strength from about 170 MPa to about 690 MPa while keeping essentially the same corrosion resistance. K-500 also resists galling better, which is why it is used for shafts, stems and fasteners. Monel 400 is more ductile and easier to form and weld.
- Why is Monel used for hydrofluoric acid?
- The nickel-copper composition is exceptionally resistant to HF across a wide range of concentrations and temperatures, where stainless steels corrode rapidly. This makes Monel a standard material for HF alkylation units in refineries. Always confirm against the specific concentration, temperature and aeration of your service.
Send your Monel Bars & Rods requirement
Give us the size, schedule or thickness, quantity and standard and we will confirm stock and send a firm price. Minimum order quantity 5 kg, mill test certificate to EN 10204 3.1 with every consignment.