Nickel Alloy N10624
UNS N10624
A wrought nickel-molybdenum corrosion-resistant alloy in the Hastelloy B family register block, valued for resistance to hydrochloric acid and other strongly reducing, non-oxidizing chemical environments.
Reference datasheet — N10624 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 SA condition
N10624 tempers and conditions
N10624 is supplied in 5 conditions, soft to hard. SA 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 solution annealed | Heavy sections: hot-rolled/forged then annealed; slightly lower strength and coarser grain than sheet product. | 385 | 860 | 50 | 13 HRC | 1.3 % IACS |
SADefault Solution annealed | Standard supply condition for plate, sheet, tube and forgings in corrosive-service equipment; maximum ductility and corrosion resistance. | 400 | 890 | 55 | 210 HB | — |
As-welded deposit | Property basis for weld metal / weldments not post-weld solution annealed; expect lower ductility and HAZ sensitisation risk in reducing acids. | 450 | 820 | 35 | 20 HRC | 1.2 % IACS |
Cold drawn | Choose for close-tolerance bar, fasteners and instrument tubing where higher yield strength and better surface finish are needed. | 700 | 1,000 | 30 | 25 HRC | 1.3 % IACS |
Heavily cold worked / hard temper strip and wire | Springs, wire and hard strip where strength governs; ductility and corrosion margin are reduced, stress-relief recommended. | 950 | 1,200 | 12 | 33 HRC | 1.3 % IACS |
What is N10624?
A wrought nickel-molybdenum corrosion-resistant alloy in the Hastelloy B family register block, valued for resistance to hydrochloric acid and other strongly reducing, non-oxidizing chemical environments. N10624 has a density of 9.22 g/cm³ (0.333 lb/in³), heavier than 97% of nickel alloy grades. It melts at 1,330°C (2,426 °F). N10624 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 890 MPa (129 ksi) — stronger than 56% of nickel alloy grades. Elongation at break is 55% and the elastic modulus is 216 GPa (31.3 Msi).
What is N10624 used for?
- hydrochloric acid handling equipment
- reducing-acid process vessels
- chemical processing piping and fittings
Advantages
- Ductile — tolerates forming and impact — 55%, better than 93% of nickel alloy grades
- Good corrosion resistance — 88/100, better than 81% of nickel alloy grades
Limitations
- Limited service temperature — 480°C (896 °F), worse than 82% of nickel alloy grades
N10624 properties
Typical room-temperature values for N10624-SA; bars are the position among nickel alloy grades.
Physical3
N10624 has a density of 9.22 g/cm³ (0.333 lb/in³), heavier than 97% of nickel alloy grades. It melts at 1,330°C (2,426 °F).
Mechanical14
N10624 has a yield strength of 400 MPa (58 ksi) and a tensile strength of 890 MPa (129 ksi) — stronger than 56% of nickel alloy grades. Elongation at break is 55% and the elastic modulus is 216 GPa (31.3 Msi).
Thermal6
N10624 is rated for continuous service to 480°C (896 °F). It conducts heat at 11 W/m·K (6.36 BTU/hr·ft·°F), worse than 60% of nickel alloy grades. Thermal expansion is 10.3 µm/m·K (5.72 µin/in·°F).
Electrical3
N10624 conducts electricity at 1.3 % IACS, worse than 89% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is excellent (88/100), better than 81% of nickel alloy grades.
Sustainability4
Producing a kilogram of N10624 takes about 145 MJ of energy and emits 13.5 kg of CO₂ — less than 77% of nickel alloy grades. Typical recycled content is 30%.
Manufacturability8
N10624's machinability is poor (20/100, better than 53% of nickel alloy grades); weldability good (65/100); 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. N10624 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with N10624
Is N10624 easy to machine?
Treat like Hastelloy B-2/B-3: rigid setup, positive-rake carbide, slow speeds (15–25 m/min), heavy positive feed to cut below the work-hardened skin, flood coolant, never dwell.
Can N10624 be welded?
GTAW/GMAW/SMAW with matching Ni-Mo filler, low heat input, interpass <95 °C, no preheat; post-weld solution anneal + water quench if the weldment sees hot reducing acid.
Can N10624 be formed, bent or molded?
Cold forms well in the annealed condition but needs ~2× the force of austenitic stainless; hot work 900–1180 °C followed by rapid cooling, and re-anneal after >10–15 % cold work.
N10624 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 |
|---|---|---|
| Moprincipal alloying element for reducing-acid resistance | 26 – 30 | 28 |
| Crsmall addition for tolerance of oxidising contaminants | 0.5 – 3 | 1.5 |
| Fe | ≤ 3 | 1.5 |
| Co | ≤ 1 | 0.3 |
| Mn | ≤ 1 | 0.3 |
| Sikept low to avoid intermetallic precipitation | ≤ 0.1 | 0.05 |
| Clow-carbon type for intergranular corrosion resistance | ≤ 0.01 | 0.01 |
| W | ≤ 1 | 0.2 |
| Al | ≤ 0.5 | 0.2 |
| P | ≤ 0.03 | |
| S | ≤ 0.01 | |
| Ni | balance |
What surface finishes work on N10624?
Pickle in HF-HNO₃-free nitric-free acid blends carefully (nitric attacks this alloy) — prefer mechanical descaling, grinding and electropolishing; no anodising, no plating normally required.
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
How much does N10624 cost?
N10624 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.
N10624 — frequently asked
What is N10624 used for?
N10624 is typically used for hydrochloric acid handling equipment, reducing-acid process vessels and chemical processing piping and fittings. In short: reducing-acid Ni-Mo alloy; high ductility, low machinability; not for oxidizing media.
What is the yield strength of N10624?
N10624 has a typical yield strength of 400 MPa (58 ksi) and a tensile strength of 890 MPa (129 ksi) — stronger than 56% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is N10624 easy to machine?
Not especially — machinability is rated poor (20/100, better than 53% of nickel alloy grades). Treat like Hastelloy B-2/B-3: rigid setup, positive-rake carbide, slow speeds (15–25 m/min), heavy positive feed to cut below the work-hardened skin, flood coolant, never dwell.
Can N10624 be welded?
Yes — weldability is rated good (65/100). GTAW/GMAW/SMAW with matching Ni-Mo filler, low heat input, interpass <95 °C, no preheat; post-weld solution anneal + water quench if the weldment sees hot reducing acid.
What surface finishes work on N10624?
Pickle in HF-HNO₃-free nitric-free acid blends carefully (nitric attacks this alloy) — prefer mechanical descaling, grinding and electropolishing; no anodising, no plating normally required.
Can N10624 be formed, bent or molded?
Cold forms well in the annealed condition but needs ~2× the force of austenitic stainless; hot work 900–1180 °C followed by rapid cooling, and re-anneal after >10–15 % cold work.
What is the maximum service temperature of N10624?
N10624 is rated for continuous use to about 480°C (896 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between N10624-SA and N10624 CW-H?
SA is the default condition — standard supply condition for plate, sheet, tube and forgings in corrosive-service equipment; maximum ductility and corrosion resistance. CW-H: springs, wire and hard strip where strength governs; ductility and corrosion margin are reduced, stress-relief recommended. Yield strength is 400 MPa in SA versus 950 MPa in CW-H.
How much does N10624 cost?
N10624 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 B333 — Ni-Mo Alloy Plate, Sheet and Strip — ASTM International (2018)
- ASTM B335 — Ni-Mo Alloy Rod — ASTM International (2020)
- ASTM B622 / B619 — Ni-Mo Alloy Seamless and Welded Pipe & Tube — ASTM International (2017)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Specialty Handbook: Nickel, Cobalt and Their Alloys — ASM International (2000)
- Ni-Mo (Hastelloy B-family) corrosion alloy datasheets — Haynes International / VDM Metals (2020)
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.