Aluminum 2N01
GB 2N01 · JIS A2N01
2N01 (JIS A2N01) is an Al-Cu-Mg aircraft structural alloy of the 2000-series family, roughly in the 2017/2024 strength class but with intermetallic-forming additions that support service to about 200 °C.
Reference datasheet — 2N01 is not in the instant-quote catalog. Upload your part and an engineer will quote it in this grade or suggest the closest stocked equivalent.
Values for the T6 condition
2N01 tempers and conditions
2N01 is supplied in 5 conditions, soft to hard. T6 is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Softest state for deep machining stock removal, cold sizing or re-forging before solution treatment. | 95 | 185 | 20 | 55 HB | 50 % IACS |
Solution heat treated and naturally aged | Choose when some cold forming or straightening is still needed after heat treatment and maximum strength is not required. | 205 | 350 | 16 | 95 HB | 33 % IACS |
Solution heat treated and overaged for stress-corrosion resistance | Rarely stocked overaged condition used when long-term thermal stability and better SCC/exfoliation resistance outweigh peak strength. | 260 | 355 | 13 | 105 HB | 44 % IACS |
T6Default Solution heat treated and artificially aged | Standard delivered condition for 2N01 forgings and bar: peak strength plus retained strength at 150–200 °C. | 280 | 400 | 12 | 115 HB | 40 % IACS |
T6, stress relieved by compression | Hand/die forgings that must be heavily machined — residual stress is knocked down so parts stay dimensionally stable. | 290 | 405 | 11 | 118 HB | 40 % IACS |
What is 2N01?
2N01 (JIS A2N01) is an Al-Cu-Mg aircraft structural alloy of the 2000-series family, roughly in the 2017/2024 strength class but with intermetallic-forming additions that support service to about 200 °C. It is used as forgings, bar and machined structural parts in T4, T6, T652 and T73; the default condition gives 280 MPa yield, 400 MPa tensile, 12 % elongation and 115 HB. It is not fusion weldable, corrosion resistance is low (score 35), and availability is tied to JIS supply chains — 2014 or 2618 forging stock is the usual substitute. 2N01 has a density of 2.82 g/cm³ (0.102 lb/in³), heavier than 89% of aluminum grades. It melts at 505°C (941 °F). 2N01 has a yield strength of 280 MPa (40.6 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 72% of aluminum grades. Elongation at break is 12% and the elastic modulus is 74 GPa (10.7 Msi).
What is 2N01 used for?
- Aircraft structural forgings
- Airframe fittings and brackets
- Elevated-temperature forged components to 200 °C
- Machined structural parts from forged bar
- Engine-adjacent forged hardware
- JIS-specified aerospace replacement parts
Advantages
- High service temperature — 200°C (392 °F), better than 90% of aluminum grades
- Easy to machine — 72/100, better than 80% of aluminum grades
Limitations
- Difficult to weld — 20/100, worse than 89% of aluminum grades
- Needs corrosion protection — 35/100, worse than 85% of aluminum grades
2N01 properties
Typical room-temperature values for 2N01-T6; bars are the position among aluminum grades.
Physical3
2N01 has a density of 2.82 g/cm³ (0.102 lb/in³), heavier than 89% of aluminum grades. It melts at 505°C (941 °F).
Mechanical15
2N01 has a yield strength of 280 MPa (40.6 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 72% of aluminum grades. Elongation at break is 12% and the elastic modulus is 74 GPa (10.7 Msi).
Thermal6
2N01 is rated for continuous service to 200°C (392 °F). It conducts heat at 150 W/m·K (86.7 BTU/hr·ft·°F), better than 58% of aluminum grades. Thermal expansion is 22.3 µm/m·K (12.4 µin/in·°F).
Electrical3
2N01 conducts electricity at 40 % IACS, better than 72% of aluminum grades.
Chemical & Environmental3
Corrosion resistance is fair (35/100), worse than 85% of aluminum grades.
Sustainability4
Producing a kilogram of 2N01 takes about 205 MJ of energy and emits 12.5 kg of CO₂ — more than 76% of aluminum grades. Typical recycled content is 12%.
Manufacturability8
2N01's machinability is very good (72/100, better than 80% of aluminum grades); weldability poor (20/100); formability fair (35/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Strength versus weight in the aluminum family
Yield strength against density for every aluminum grade FabDigit runs. 2N01 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 2N01
Is 2N01 easy to machine?
Machines well in T6 with sharp carbide tools, high speed and flood coolant; Ni/Fe intermetallics are abrasive so expect faster edge wear than 6061.
Can 2N01 be welded?
Not recommended for fusion welding (hot cracking, loss of T6 properties) — use riveting, bolting, friction stir or friction welding, and re-heat-treat where possible.
Can 2N01 be formed, bent or molded?
Excellent hot forging/upsetting at roughly 400–450 °C; cold forming only in O or T4 with generous bend radii, then solution treat and age.
2N01 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| Si | 0.5 – 1.2 | 0.8 |
| Feimpurity/intentional Fe-Ni phase former | ≤ 1 | 0.6 |
| Cumain strengthening element | 3.5 – 4.5 | 4 |
| Mn | ≤ 0.2 | 0.1 |
| Mg | 0.4 – 0.8 | 0.6 |
| Nigives elevated-temperature stability | 1.7 – 2.3 | 2 |
| Cr | ≤ 0.1 | |
| Zn | ≤ 0.25 | |
| Tigrain refiner | ≤ 0.2 | |
| Others (each) | ≤ 0.05 | |
| Others (total) | ≤ 0.15 | |
| Al | balance |
What surface finishes work on 2N01?
Chromic or sulfuric anodize gives a dull grey film; for corrosion service use cladding, conversion coating plus primer, or hard anodize for wear surfaces.
Surface treatments FabDigit runs on aluminum parts — pick them in the quote configurator or call them out on the drawing. Each links to its datasheet in the surface-finish library (thickness, specs, call-out, material verdicts).
Organic Coating
Equivalent designations
Standards and trade names that resolve to Aluminum 2N01 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- JIS
- A2N01
How much does 2N01 cost?
2N01 is a high-cost aluminum ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
2N01 — frequently asked
What is 2N01 used for?
2N01 is typically used for aircraft structural forgings, airframe fittings and brackets, elevated-temperature forged components to 200 °C, machined structural parts from forged bar, engine-adjacent forged hardware and JIS-specified aerospace replacement parts. In short: JIS aerospace forging alloy; 200 °C service capability; 2017/2024 strength class.
What is the yield strength of 2N01?
2N01 has a typical yield strength of 280 MPa (40.6 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 72% of aluminum grades. Strength varies by condition: see the 5 listed tempers.
Is 2N01 easy to machine?
Yes — machinability is rated very good (72/100, better than 80% of aluminum grades). Machines well in T6 with sharp carbide tools, high speed and flood coolant; Ni/Fe intermetallics are abrasive so expect faster edge wear than 6061.
Can 2N01 be welded?
Not readily — weldability is rated poor (20/100). Not recommended for fusion welding (hot cracking, loss of T6 properties) — use riveting, bolting, friction stir or friction welding, and re-heat-treat where possible.
What surface finishes work on 2N01?
Chromic or sulfuric anodize gives a dull grey film; for corrosion service use cladding, conversion coating plus primer, or hard anodize for wear surfaces.
Can 2N01 be formed, bent or molded?
Excellent hot forging/upsetting at roughly 400–450 °C; cold forming only in O or T4 with generous bend radii, then solution treat and age.
What is the maximum service temperature of 2N01?
2N01 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 2N01-T6 and 2N01-O?
T6 is the default condition — standard delivered condition for 2N01 forgings and bar: peak strength plus retained strength at 150–200 °C. O: softest state for deep machining stock removal, cold sizing or re-forging before solution treatment. Yield strength is 280 MPa in T6 versus 95 MPa in O.
How much does 2N01 cost?
2N01 is a high-cost aluminum ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Sources
- JIS H 4140 Aluminium and aluminium alloy forgings — JSA (2020)
- JIS H 4040 Aluminium and aluminium alloy rods, bars and wires — JSA (2015)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- Aluminum Association Teal Sheets — International Alloy Designations — The Aluminum Association (2018)
Property data is compiled from published supplier and standards handbooks and normalised for comparison; hardness values on non-Brinell scales are converted approximately for charting only. Manufacturability limits are FabDigit quote-engine defaults and may be relaxed by engineering review. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.