Hastelloy C-2000 · UNS N06200 · W. Nr. 2.4675
Hastelloy C-2000 (N06200): composition, properties, fittings and flanges
Hastelloy C-2000 (N06200, W. Nr. 2.4675) is Nickel-chromium-molybdenum-copper alloy with very high PREN. Hastelloy C-2000 is specified at Nickel Balance, Chromium 22.0 - 24.0, Molybdenum 15.0 - 17.0. Hastelloy C-2000 deliberately adds about 1.6 % copper to a 23 % chromium, 16 % molybdenum matrix, giving the widest single-alloy…
- UNS
- N06200
- W. Nr.
- 2.4675
- Density
- 8.50 g/cm³ (0.307 lb/in³)
- Key strength
- 690 MPa / 100 ksi
Identification and standards
| Short form | Hastelloy C-2000 · UNS N06200 · W. Nr. 2.4675 |
|---|---|
| Classification | Nickel-chromium-molybdenum-copper alloy with very high PREN |
| UNS | N06200 |
| Werkstoff number | 2.4675 |
| Material family | Hastelloy Alloys |
Chemical composition
| Element | Composition (wt %) | Why it is there |
|---|---|---|
| Nickel (Ni) | Balance | Matrix |
| Chromium (Cr) | 22.0 - 24.0 | Oxidising acid resistance |
| Molybdenum (Mo) | 15.0 - 17.0 | Reducing acid resistance |
| Copper (Cu) | 1.30 - 1.90 | Extends reducing acid coverage |
| Iron (Fe) | 3.00 max | Residual |
| Carbon (C) | 0.010 max | - |
| Aluminium (Al) | 0.50 max | - |
| Manganese (Mn) | 0.50 max | - |
Note Single figures are maximum limits unless shown as a range. Always confirm against the heat-specific EN 10204 3.1 certificate supplied with your order.
Mechanical properties
| Tensile strength, min (annealed) | 690 MPa / 100 ksi |
|---|---|
| 0.2 % yield strength, min | 310 MPa / 45 ksi |
| Elongation in 2 in, min | 45 % |
| Typical hardness, annealed | 170 - 220 HB |
| PREN, typical | About 71 |
Warning Values depend on product form, section thickness and heat treatment. Larger sections generally achieve lower strength than thin product; always design against the applicable code allowable stress rather than these figures.
Physical properties
| Density | 8.50 g/cm³ (0.307 lb/in³) |
|---|---|
| Melting range | 1320 - 1370 °C (2410 - 2500 °F) |
| Modulus of elasticity | 206 GPa (29.9 x 10⁶ psi) |
| Thermal conductivity at 20 °C | 10.4 W/m·K |
| Mean coefficient of thermal expansion, 20-100 °C | 12.4 µm/m·°C |
| Specific heat capacity | 414 J/kg·K |
Specifications by product form
| Forgings & flanges | ASTM B564 / ASME SB-564 (UNS N06200) |
|---|---|
| Butt weld fittings | ASTM B366 / ASME SB-366 (WP grade to order) |
| Seamless pipe & tube | ASTM B622 / B619 / ASME SB-622 |
| Plate / sheet / strip | ASTM B575 / ASME SB-575 |
| Bar / rod | ASTM B574 / ASME SB-574 |
| Welding consumables | ERNiCrMo-17 |
| UNS / EN / China | UNS N06200 · W. Nr. 2.4675 |
Product forms available
Hangbo supplies this grade in the following forms. Sizes outside the listed range can often be produced to order.
- Forged flanges blanks and finished flanges to ASME B16.5, B16.47 Series A/B and B16.36
- Butt weld elbows, tees, reducers, caps and stub ends to ASME B16.9 and MSS SP-43
- Seamless pipe and tube to the applicable ASTM / ASME pipe specification
- Forged rings, discs and hubs machined to your drawing
Typical applications
- Mixed acid pickling and acid regeneration plant
- Sulphuric, hydrochloric and hydrofluoric acid process lines
- Reactors handling oxidising and reducing streams in sequence
- FGD absorbers and highly chlorinated waste streams
Welding, forming and machining
- Welding
- Weld with ERNiCrMo-17 filler. Standard practice for the C family; no special precautions beyond cleanliness and controlled heat input.
- Heat treatment
- Solution anneal at 1120 °C and water quench.
- Hot and cold forming
- Hot work in the range stated by the mill for this grade, then re-solution or re-age before final machining so that the delivered condition matches the certificate.
- Machining
- Machine with sharp carbide or high-speed steel tooling, positive rake, constant feed and ample coolant. Never dwell - the surface work-hardens quickly.
Buy Hastelloy C-2000 from Hangbo
Material is supplied with full heat-number traceability, solution annealing or ageing performed under calibrated furnace control, and an EN 10204 3.1 certificate covering chemical analysis, mechanical properties, heat treatment records and the agreed NDT scope. Positive material identification and third party inspection and test reports from SGS are available for critical service.