Alloy 601 (UNS N06601)
Aluminium-bearing nickel–chromium alloy with exceptional resistance to oxidation and spalling in cyclic high-temperature service.
- UNS
- N06601
- W.Nr / EN
- 2.4851
- Density
- 8.11 g/cm³
- Service range
- To ~1200 °C (oxidation)
About Alloy 601
Alloy 601 extends the nickel–chromium system with an aluminium addition that forms a tightly adherent oxide scale. The scale resists spalling even under severe thermal cycling, which gives the alloy its reputation in furnace and thermal-processing service up to about 1200 °C.
Alongside oxidation resistance it retains useful creep-rupture strength at high temperature and resists carburising and sulfur-free oxidising atmospheres. DMK Alloys manufactures Alloy 601 blanks and components for thermal-processing and hot-gas path hardware.
Alloy 601 chemical composition (weight %)
| Element | Limit / range |
|---|---|
| Ni (+Co) | 58.0 – 63.0 |
| Cr | 21.0 – 25.0 |
| Fe | Balance |
| Al | 1.0 – 1.7 |
| C | ≤ 0.10 |
| Mn | ≤ 1.0 |
| Si | ≤ 0.50 |
| Cu | ≤ 1.0 |
| S | ≤ 0.015 |
Composition limits per the commonly referenced standards listed below. Order-specific limits may differ — confirm against the governing specification.
Alloy 601 mechanical properties (typical)
| Condition / form | Tensile, MPa | 0.2% Yield, MPa | Elongation, % |
|---|---|---|---|
| Bar, annealed, room temp. | 550 – 750 | ≥ 205 | ≥ 30 |
| Sheet, annealed, room temp. | ≥ 550 | ≥ 205 | ≥ 30 |
Values are typical or specification-minimum levels for guidance only — not a guarantee of properties. Certified values are established by testing against the ordered specification.
Alloy 601 specifications & international equivalents
| System | Designation | Covers |
|---|---|---|
| UNS | N06601 | All product forms |
| AMS | AMS 5870 | Sheet, strip, plate |
| ASTM | ASTM B166 | Rod, bar, wire |
| ASTM | ASTM B168 | Plate, sheet, strip |
| W.Nr / EN | 2.4851 · NiCr23Fe15Al | European cross-reference |
Cross-references are for guidance; the governing document is always the specification cited on your purchase order or drawing.
Alloy 601 physical properties
| Property | Typical value |
|---|---|
| Density | 8.11 g/cm³ |
| Melting range | 1360 – 1411 °C |
| Modulus of elasticity (family-typical) | ≈ 200 – 220 GPa |
| Indicative service range | To ~1200 °C (oxidation) |
Forms we manufacture
- Bars
- Forged blanks
- Components to drawing
Dimensional ranges and delivery conditions are confirmed per enquiry.
Where Alloy 601 earns its keep
Typically specified for:
- Furnace fixtures
- Baskets
- Radiant tubes
- Combustion-chamber liners
- Thermal-oxidiser internals
Also consider
Alloy 625
UNS N06625 · W.Nr 2.4856AMS 5666 · AMS 5599
Solid-solution nickel–chromium–molybdenum–niobium alloy with outstanding corrosion resistance and strength without age hardening.
Alloy 600
UNS N06600 · W.Nr 2.4816AMS 5665 · AMS 5540
The base nickel–chromium–iron engineering alloy: oxidation and chloride-cracking resistance across a very wide temperature span.
Alloy X
UNS N06002 · W.Nr 2.4665AMS 5536 · AMS 5754
Solid-solution nickel–chromium–iron–molybdenum alloy with an exceptional record in combustor and furnace hardware.
Request Alloy 601 to your specification
State the governing standard, form, dimensions, quantity and testing requirements — the export team responds with a manufacturer's quotation.