Nickel Alloy N06975
UNS N06975
N06975 is a titanium-stabilized nickel-chromium-molybdenum corrosion-resistant alloy in the Ni-Mo-Cr (Hastelloy-family) UNS series, combining chromium for oxidizing service with molybdenum for reducing acids.
Reference datasheet — N06975 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 ANN condition
N06975 tempers and conditions
N06975 is supplied in 5 conditions, soft to hard. ANN 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 |
|---|---|---|---|---|---|---|
Hot finished and annealed | Heavy bar, billet and forged shapes supplied hot worked then solution annealed; slightly coarser grain and lower strength than cold-finished stock. | 290 | 665 | 48 | 180 HB | 1.5 % IACS |
ANNDefault Annealed | Standard mill condition for plate, sheet, tube and bar — maximum corrosion resistance and ductility. | 310 | 690 | 50 | 185 HB | — |
Cold drawn and annealed | Cold-finished then re-annealed for tight tolerance and bright surface with full corrosion resistance. | 320 | 700 | 48 | 190 HB | 1.5 % IACS |
As-welded deposit | Property set for weld metal and HAZ without post-weld solution anneal — titanium stabilization keeps the HAZ resistant in most acid service. | 330 | 660 | 35 | 13 HRC | 1.5 % IACS |
Cold worked | Choose when higher strength and hardness are needed (fasteners, shafts, springs) and slight loss of ductility/corrosion margin is acceptable. | 700 | 900 | 20 | 25 HRC | 1.5 % IACS |
What is N06975?
N06975 is a titanium-stabilized nickel-chromium-molybdenum corrosion-resistant alloy in the Ni-Mo-Cr (Hastelloy-family) UNS series, combining chromium for oxidizing service with molybdenum for reducing acids. It is used for chemical-plant piping, vessel linings and acid-handling hardware in plate, sheet, tube and bar. Annealed properties are about 310 MPa yield, 690 MPa tensile, 50% elongation and 185 HB, with service to roughly 540 °C; weldability is good (score 80) and corrosion resistance rates 86. Machinability is low (score 18) and availability is limited compared with mainstream grades; C-276-type alloys are the step up for severe chloride pitting. N06975 has a density of 8.14 g/cm³ (0.294 lb/in³), lighter than 74% of nickel alloy grades. It melts at 1,330°C (2,426 °F). N06975 has a yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 74% of nickel alloy grades. Elongation at break is 50% and the elastic modulus is 196 GPa (28.4 Msi).
What is N06975 used for?
- chemical processing equipment
- acid handling components
- corrosion-resistant piping
- process vessel linings
Advantages
- Ductile — tolerates forming and impact — 50%, better than 88% of nickel alloy grades
Limitations
- Limited service temperature — 540°C (1,004 °F), worse than 75% of nickel alloy grades
N06975 properties
Typical room-temperature values for N06975-ANN; bars are the position among nickel alloy grades.
Physical3
N06975 has a density of 8.14 g/cm³ (0.294 lb/in³), lighter than 74% of nickel alloy grades. It melts at 1,330°C (2,426 °F).
Mechanical14
N06975 has a yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 74% of nickel alloy grades. Elongation at break is 50% and the elastic modulus is 196 GPa (28.4 Msi).
Thermal5
N06975 is rated for continuous service to 540°C (1,004 °F). It conducts heat at 10.5 W/m·K (6.07 BTU/hr·ft·°F), worse than 73% of nickel alloy grades. Thermal expansion is 13.4 µm/m·K (7.44 µin/in·°F).
Electrical3
N06975 conducts electricity at 1.5 % IACS, better than 59% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (86/100), better than 77% of nickel alloy grades.
Sustainability4
Producing a kilogram of N06975 takes about 150 MJ of energy and emits 12 kg of CO₂ — less than 68% of nickel alloy grades. Typical recycled content is 35%.
Manufacturability8
N06975's machinability is poor (18/100, worse than 61% of nickel alloy grades); weldability very good (80/100); formability very good (70/100).
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 nickel alloy family
Yield strength against density for every nickel alloy grade FabDigit runs. N06975 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with N06975
Is N06975 easy to machine?
Treat as a gummy, rapidly work-hardening nickel alloy: rigid setups, positive-rake carbide or ceramic tooling, low speed / heavy positive feed, continuous cut and flood coolant to avoid glazing.
Can N06975 be welded?
Readily GTAW/GMAW/SMAW welded with matching or ERNiCrMo filler; keep interpass temperature low, heat input modest and surfaces clean — Ti stabilization usually allows use as-welded without PWHT.
Can N06975 be formed, bent or molded?
Cold forms well when annealed but hardens fast — allow extra power, generous bend radii and interstage anneals at ~1120 °C with rapid quench; hot work in the ~1150–1200 °C range.
N06975 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 |
|---|---|---|
| Ni | 47 – 52 | 49.5 |
| Cr | 23 – 26 | 24.5 |
| Mo | 5 – 7 | 6 |
| Cuaids resistance to reducing acids | 0.7 – 1.2 | 0.9 |
| Ticarbide stabilizer, protects HAZ | 0.7 – 1.5 | 1 |
| C | ≤ 0.03 | 0.02 |
| Mn | ≤ 1 | 0.5 |
| Si | ≤ 1 | 0.5 |
| P | ≤ 0.04 | |
| S | ≤ 0.03 | |
| Febalance, typically 15–20 % | balance |
What surface finishes work on N06975?
Pickle (HNO₃-HF) or blast-and-passivate after hot work/welding to restore the chromium oxide film; can be ground, mechanically polished or electropolished — anodizing is not applicable.
Surface treatments FabDigit runs on nickel alloy 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).
Plating
Thermal Spray
Equivalent designations
Standards and trade names that resolve to Nickel Alloy N06975 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- Other
- Hastelloy G-2
How much does N06975 cost?
N06975 is a high-cost nickel alloy ($$$$), 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.
N06975 — frequently asked
What is N06975 used for?
N06975 is typically used for chemical processing equipment, acid handling components, corrosion-resistant piping and process vessel linings. In short: mixed acid service; ti-stabilized, weld as-welded; limited stock availability.
What is the yield strength of N06975?
N06975 has a typical yield strength of 310 MPa (45 ksi) and a tensile strength of 690 MPa (100 ksi) — weaker than 74% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is N06975 easy to machine?
Not especially — machinability is rated poor (18/100, worse than 61% of nickel alloy grades). Treat as a gummy, rapidly work-hardening nickel alloy: rigid setups, positive-rake carbide or ceramic tooling, low speed / heavy positive feed, continuous cut and flood coolant to avoid glazing.
Can N06975 be welded?
Yes — weldability is rated very good (80/100). Readily GTAW/GMAW/SMAW welded with matching or ERNiCrMo filler; keep interpass temperature low, heat input modest and surfaces clean — Ti stabilization usually allows use as-welded without PWHT.
What surface finishes work on N06975?
Pickle (HNO₃-HF) or blast-and-passivate after hot work/welding to restore the chromium oxide film; can be ground, mechanically polished or electropolished — anodizing is not applicable.
Can N06975 be formed, bent or molded?
Cold forms well when annealed but hardens fast — allow extra power, generous bend radii and interstage anneals at ~1120 °C with rapid quench; hot work in the ~1150–1200 °C range.
What is the maximum service temperature of N06975?
N06975 is rated for continuous use to about 540°C (1,004 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between N06975-ANN and N06975-CW?
ANN is the default condition — standard mill condition for plate, sheet, tube and bar — maximum corrosion resistance and ductility. CW: choose when higher strength and hardness are needed (fasteners, shafts, springs) and slight loss of ductility/corrosion margin is acceptable. Yield strength is 310 MPa in ANN versus 700 MPa in CW.
How much does N06975 cost?
N06975 is a high-cost nickel alloy ($$$$), 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
- ASTM B582 — Nickel-Chromium-Iron-Molybdenum-Copper Alloy Plate, Sheet and Strip — ASTM International (2019)
- ASTM B581 — Nickel-Chromium-Iron-Molybdenum-Copper Alloy Rod and Bar — ASTM International (2019)
- ASTM B619 / B622 / B626 — Welded and Seamless Ni-alloy Pipe and Tube — ASTM International (2019)
- Hastelloy alloy G-2 (UNS N06975) technical data — Haynes International (2020)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
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.