Nickel Alloy Nimonic 86 CR-H
Supply condition
UNS N12160 · EN 2.4880
CR-H = cold Rolled Hard
Spring-hard strip and thin sheet for stampings and clips that will not be re-annealed; limited to lower temperatures because of recovery/recrystallisation.
Values for the CR-H condition
Other Nimonic 86 tempers and conditions
Nimonic 86 is listed in 5 conditions; see the grade overview at Nimonic 86.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
SADefault Solution Annealed | Standard supply condition for plate, sheet, bar and tube — maximum ductility, corrosion resistance and formability before service. | 380 | 800 | 48 | 195 HB | — |
As-welded deposit | Properties of all-weld-metal deposits used when qualifying joints in Nimonic 86 fabrications without post-weld solution treatment. | 420 | 760 | 35 | 210 HB | 1.4 % IACS |
Hot Finished / Hot Rolled | Heavy bar, billet and forgings delivered directly from hot work when subsequent machining and a final solution anneal are planned. | 450 | 850 | 40 | 17 HRC | 1.4 % IACS |
Cold drawn | Choose for close-tolerance bar and wire where higher proof strength and a bright finish are needed at moderate service temperature. | 700 | 950 | 25 | 25 HRC | 1.4 % IACS |
CR-HThis page Cold Rolled Hard | Spring-hard strip and thin sheet for stampings and clips that will not be re-annealed; limited to lower temperatures because of recovery/recrystallisation. | 900 | 1,100 | 8 | 32 HRC | 1.4 % IACS |
What is Nimonic 86 CR-H?
Nimonic 86 CR-H is Nimonic 86 supplied in the CR-H condition — spring-hard strip and thin sheet for stampings and clips that will not be re-annealed; limited to lower temperatures because of recovery/recrystallisation. Nimonic 86 CR-H has a yield strength of 900 MPa (131 ksi) and a tensile strength of 1,100 MPa (160 ksi) — stronger than 94% of nickel alloy grades. Elongation at break is 8% and the elastic modulus is 218 GPa (31.6 Msi). Nimonic 86 CR-H has a density of 8.5 g/cm³ (0.307 lb/in³), heavier than 64% of nickel alloy grades. It melts at 1,330°C (2,426 °F). SA is the default condition FabDigit quotes; CR-H is available on request or by drawing note.
Advantages
- High strength — 900 MPa (131 ksi), better than 94% of nickel alloy grades
Limitations
- Limited ductility — 8%, worse than 87% of nickel alloy grades
- Limited formability — 20/100, worse than 75% of nickel alloy grades
Nimonic 86 CR-H properties
Typical room-temperature values for Nimonic 86 CR-H; 21 are specific to this condition. Other listed values are Nimonic 86 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
Nimonic 86 CR-H has a density of 8.5 g/cm³ (0.307 lb/in³), heavier than 64% of nickel alloy grades. It melts at 1,330°C (2,426 °F).
Mechanical14
Nimonic 86 CR-H has a yield strength of 900 MPa (131 ksi) and a tensile strength of 1,100 MPa (160 ksi) — stronger than 94% of nickel alloy grades. Elongation at break is 8% and the elastic modulus is 218 GPa (31.6 Msi).
Thermal6
Nimonic 86 CR-H is rated for continuous service to 550°C (1,022 °F). It conducts heat at 10 W/m·K (5.78 BTU/hr·ft·°F), worse than 88% of nickel alloy grades. Thermal expansion is 12.2 µm/m·K (6.78 µin/in·°F).
Electrical3
Nimonic 86 CR-H conducts electricity at 1.4 % IACS, worse than 65% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (76/100), worse than 59% of nickel alloy grades.
Sustainability4
Producing a kilogram of Nimonic 86 CR-H takes about 200 MJ of energy and emits 14.5 kg of CO₂ — more than 78% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability8
Nimonic 86 CR-H's machinability is poor (15/100, worse than 76% of nickel alloy grades); weldability good (60/100); formability poor (20/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Nimonic 86 CR-H
Is Nimonic 86 easy to machine?
Machine like a gummy solid-solution Ni alloy: rigid setups, sharp positive-rake carbide, 15–30 m/min, heavy constant feed to cut under the work-hardened layer, and copious high-pressure coolant.
Can Nimonic 86 be welded?
Readily welded by GTAW/GMAW/PAW with matching or Ni-Cr-Mo filler; no γ′ so strain-age cracking is not a concern, but keep interpass temperature low and heat input modest to limit hot cracking and σ-phase.
Can Nimonic 86 be formed, bent or molded?
Hot work at 1150–1200 °C and cold form with ~2× the force needed for stainless; interstage annealing at ~1150 °C followed by rapid cooling restores ductility.
What surface finishes work on Nimonic 86?
Not anodisable — pickle in nitric-hydrofluoric or blast-and-passivate after heat treatment; electropolishing or mechanical polishing gives a durable bright surface, and no plating is needed for oxidation service.
Nimonic 86 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 |
|---|---|---|
| Cr | 24 – 26 | 25 |
| Mo | 9 – 11 | 10 |
| C | 0.03 – 0.1 | 0.05 |
| Cerare-earth addition for oxide-scale adhesion | 0.02 – 0.1 | 0.05 |
| Fe | ≤ 1 | 0.3 |
| Mn | ≤ 1 | 0.3 |
| Si | ≤ 0.4 | 0.2 |
| Ti | ≤ 0.2 | 0.05 |
| Al | ≤ 0.2 | 0.05 |
| Cu | ≤ 0.2 | 0.05 |
| S | ≤ 0.02 | 0 |
| P | ≤ 0.02 | 0.01 |
| Nibalance, typically ~63 % | balance | — |
Nimonic 86 CR-H — frequently asked
What is Nimonic 86 CR-H used for?
Nimonic 86 CR-H is typically used for gas turbine combustion chambers, afterburner and hot-section sheet parts, high-temperature springs and fasteners and aerospace exhaust components. In short: 1100 °C oxidation service; weldable solid-solution nickel; sheet-fabrication superalloy.
What is the yield strength of Nimonic 86 CR-H?
Nimonic 86 CR-H has a typical yield strength of 900 MPa (131 ksi) and a tensile strength of 1,100 MPa (160 ksi) — stronger than 94% of nickel alloy grades. Strength varies by condition: see the 5 listed tempers.
Is Nimonic 86 CR-H easy to machine?
Not especially — machinability is rated poor (15/100, worse than 76% of nickel alloy grades). Machine like a gummy solid-solution Ni alloy: rigid setups, sharp positive-rake carbide, 15–30 m/min, heavy constant feed to cut under the work-hardened layer, and copious high-pressure coolant.
Can Nimonic 86 CR-H be welded?
Yes — weldability is rated good (60/100). Readily welded by GTAW/GMAW/PAW with matching or Ni-Cr-Mo filler; no γ′ so strain-age cracking is not a concern, but keep interpass temperature low and heat input modest to limit hot cracking and σ-phase.
What surface finishes work on Nimonic 86 CR-H?
Not anodisable — pickle in nitric-hydrofluoric or blast-and-passivate after heat treatment; electropolishing or mechanical polishing gives a durable bright surface, and no plating is needed for oxidation service.
Can Nimonic 86 CR-H be formed, bent or molded?
Hot work at 1150–1200 °C and cold form with ~2× the force needed for stainless; interstage annealing at ~1150 °C followed by rapid cooling restores ductility.
What is the maximum service temperature of Nimonic 86 CR-H?
Nimonic 86 CR-H is rated for continuous use to about 550°C (1,022 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Nimonic 86-SA and Nimonic 86 CR-H?
SA is the default condition — standard supply condition for plate, sheet, bar and tube — maximum ductility, corrosion resistance and formability before service. CR-H: spring-hard strip and thin sheet for stampings and clips that will not be re-annealed; limited to lower temperatures because of recovery/recrystallisation. Yield strength is 380 MPa in SA versus 900 MPa in CR-H.
Sources
- Nimonic alloy series technical data — Special Metals Corporation (2020)
- Werkstoff 2.4880 (NiCr25Mo10) material designation — DIN/Stahl-Eisen-Liste (2017)
- ASM Handbook Vol. 1: Properties and Selection — Irons, Steels and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 13B: Corrosion — Materials — ASM International (2005)
- ASM Specialty Handbook: Nickel, Cobalt and Their Alloys — ASM International (2000)
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.