Nickel Alloy N06035 HF-A
Heat-treated state
UNS N06035 · EN 2.4643
HF-A = hot finished / hot rolled and annealed heavy section
Heavy plate, forgings and large bar supplied hot finished then solution annealed; slightly lower strength than thin annealed product.
Values for the HF-A condition
Other N06035 tempers and conditions
N06035 is listed in 4 conditions; see the grade overview at N06035.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
HF-AThis page Hot finished / hot rolled and annealed heavy section | Heavy plate, forgings and large bar supplied hot finished then solution annealed; slightly lower strength than thin annealed product. | 330 | 720 | 58 | 168 HB | 1.4 % IACS |
SADefault Solution annealed | Standard supply condition for plate, sheet, tube, pipe and bar; maximum corrosion resistance and ductility. | 360 | 760 | 60 | 175 HB | 1.4 % IACS |
As-welded deposit | Weldment condition; G-35 is normally used as-welded because the HAZ retains corrosion resistance without post-weld solution treatment. | 400 | 730 | 42 | 200 HB | 1.4 % IACS |
Cold drawn | Choose when higher strength and tight dimensional tolerance are needed and service is not in a sensitizing or highly aggressive crevice environment. | 720 | 950 | 25 | 28 HRC | 1.4 % IACS |
What is N06035 HF-A?
N06035 HF-A is N06035 heat treated to HF-A — heavy plate, forgings and large bar supplied hot finished then solution annealed; slightly lower strength than thin annealed product. N06035 HF-A has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 720 MPa (104 ksi) — weaker than 67% of nickel alloy grades. Elongation at break is 58% and the elastic modulus is 211 GPa (30.6 Msi). N06035 HF-A has a density of 8.19 g/cm³ (0.296 lb/in³), lighter than 68% of nickel alloy grades. It melts at 1,330°C (2,426 °F). SA is the default condition FabDigit quotes; HF-A is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 58%, better than 96% of nickel alloy grades
- Good corrosion resistance — 90/100, better than 85% of nickel alloy grades
Limitations
- Poor heat conductor — 9.2 W/m·K (5.32 BTU/hr·ft·°F), worse than 93% of nickel alloy grades
N06035 HF-A properties
Typical room-temperature values for N06035 HF-A; 20 are specific to this condition. Other listed values are N06035 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
N06035 HF-A has a density of 8.19 g/cm³ (0.296 lb/in³), lighter than 68% of nickel alloy grades. It melts at 1,330°C (2,426 °F).
Mechanical14
N06035 HF-A has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 720 MPa (104 ksi) — weaker than 67% of nickel alloy grades. Elongation at break is 58% and the elastic modulus is 211 GPa (30.6 Msi).
Thermal5
N06035 HF-A is rated for continuous service to 650°C (1,202 °F). It conducts heat at 9.2 W/m·K (5.32 BTU/hr·ft·°F), worse than 93% of nickel alloy grades. Thermal expansion is 12.3 µm/m·K (6.83 µin/in·°F).
Electrical3
N06035 HF-A conducts electricity at 1.4 % IACS, worse than 65% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (90/100), better than 85% of nickel alloy grades.
Sustainability4
Producing a kilogram of N06035 HF-A takes about 160 MJ of energy and emits 13 kg of CO₂ — less than 53% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability7
N06035 HF-A's machinability is poor (19/100, worse than 52% of nickel alloy grades); weldability very good (78/100); formability good (68/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with N06035 HF-A
Is N06035 easy to machine?
Machine like alloy 625/C-276: rigid setup, positive-rake carbide, heavy positive feed to cut under the work-hardened layer, low SFM and flood coolant.
Can N06035 be welded?
Readily GTAW/GMAW welded with matching G-35 filler; keep interpass below ~100 °C, low heat input, no preheat and no PWHT required for corrosion service.
Can N06035 be formed, bent or molded?
Very ductile but strongly work hardening — form hot at 950–1200 °C or cold with intermediate solution anneals at ~1120 °C followed by rapid quench.
What surface finishes work on N06035?
Pickle or grit-blast plus pickle to remove heat tint after welding/annealing; electropolishing gives the best passive surface. Not anodizable.
N06035 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 |
|---|---|---|
| Crvery high Cr gives oxidizing-acid resistance | 32.25 – 34.25 | 33.2 |
| Mo | 7.6 – 9 | 8.1 |
| Fe | ≤ 2 | 1 |
| Cu | 0.3 – 0.6 | 0.4 |
| W | ≤ 0.6 | 0.3 |
| Co | ≤ 1 | 0.3 |
| Mn | ≤ 0.5 | 0.3 |
| Si | ≤ 0.6 | 0.4 |
| Al | ≤ 0.4 | 0.2 |
| C | ≤ 0.05 | 0.01 |
| N | ≤ 0.1 | 0.05 |
| P | ≤ 0.04 | — |
| S | ≤ 0.03 | — |
| Nibalance, ~58 % | balance | — |
N06035 HF-A — frequently asked
What is N06035 HF-A used for?
N06035 HF-A is typically used for high-temperature furnace components, process heater tubing and heat-resistant fixtures. In short: furnace-atmosphere Ni-Cr alloy; very high corrosion resistance; difficult to machine.
What is the yield strength of N06035 HF-A?
N06035 HF-A has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 720 MPa (104 ksi) — weaker than 67% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is N06035 HF-A easy to machine?
Not especially — machinability is rated poor (19/100, worse than 52% of nickel alloy grades). Machine like alloy 625/C-276: rigid setup, positive-rake carbide, heavy positive feed to cut under the work-hardened layer, low SFM and flood coolant.
Can N06035 HF-A be welded?
Yes — weldability is rated very good (78/100). Readily GTAW/GMAW welded with matching G-35 filler; keep interpass below ~100 °C, low heat input, no preheat and no PWHT required for corrosion service.
What surface finishes work on N06035 HF-A?
Pickle or grit-blast plus pickle to remove heat tint after welding/annealing; electropolishing gives the best passive surface. Not anodizable.
Can N06035 HF-A be formed, bent or molded?
Very ductile but strongly work hardening — form hot at 950–1200 °C or cold with intermediate solution anneals at ~1120 °C followed by rapid quench.
What is the maximum service temperature of N06035 HF-A?
N06035 HF-A is rated for continuous use to about 650°C (1,202 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between N06035-SA and N06035-CD?
SA is the default condition — standard supply condition for plate, sheet, tube, pipe and bar; maximum corrosion resistance and ductility. CD: choose when higher strength and tight dimensional tolerance are needed and service is not in a sensitizing or highly aggressive crevice environment. Yield strength is 360 MPa in SA versus 720 MPa in CD.
Sources
- ASTM B575 — Ni-Cr-Mo alloy plate, sheet and strip (UNS N06035) — ASTM International (2022)
- ASTM B564 / B574 / B622 — forgings, rod and seamless tube (UNS N06035) — ASTM International (2022)
- HASTELLOY G-35 alloy technical data — Haynes International (2020)
- ASM Handbook Vol. 2 — Nickel and Nickel Alloys — ASM International (1990)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.