Nickel Alloy G-NiCr15-F (As fabricated)
Temper · default condition
EN 2.4815
Standard supply condition for furnace hardware, grids and fixtures where dimensional stability at temperature matters more than peak strength.
Values for the F condition
Other G-NiCr15 tempers and conditions
G-NiCr15 is listed in 4 conditions; see the grade overview at G-NiCr15.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Solution annealed | Choose when maximum ductility, homogenised carbide distribution and best corrosion/oxidation behaviour are needed before service or machining. | 220 | 460 | 30 | 135 HB | 1.7 % IACS |
Stress relieved | Used on welded or heavily machined castings to reduce distortion and residual stress before thermal cycling in service. | 235 | 470 | 25 | 145 HB | 1.6 % IACS |
FDefaultThis page As fabricated | Standard supply condition for furnace hardware, grids and fixtures where dimensional stability at temperature matters more than peak strength. | 250 | 480 | 22 | 150 HB | — |
Centrifugally cast | Pick for radiant tubes, rollers and rings where the denser, directionally solidified wall gives higher strength and soundness than static casting. | 270 | 520 | 25 | 160 HB | 1.6 % IACS |
What is G-NiCr15-F?
G-NiCr15-F is G-NiCr15 in the F temper — standard supply condition for furnace hardware, grids and fixtures where dimensional stability at temperature matters more than peak strength. G-NiCr15-F has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 87% of nickel alloy grades. Elongation at break is 22% and the elastic modulus is 195 GPa (28.3 Msi). G-NiCr15-F has a density of 8.4 g/cm³ (0.303 lb/in³), heavier than 57% of nickel alloy grades. It melts at 1,340°C (2,444 °F).
Advantages
- High service temperature — 1,050°C (1,922 °F), better than 83% of nickel alloy grades
- Conducts heat well — 14 W/m·K (8.09 BTU/hr·ft·°F), better than 77% of nickel alloy grades
Limitations
- Hard to polish — 55/100, worse than 95% of nickel alloy grades
- Low strength — 250 MPa (36.3 ksi), worse than 87% of nickel alloy grades
- Limited formability — 15/100, worse than 81% of nickel alloy grades
G-NiCr15-F properties
Typical room-temperature values for G-NiCr15-F; 10 are specific to this condition. Other listed values are G-NiCr15 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
G-NiCr15-F has a density of 8.4 g/cm³ (0.303 lb/in³), heavier than 57% of nickel alloy grades. It melts at 1,340°C (2,444 °F).
Mechanical14
G-NiCr15-F has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 87% of nickel alloy grades. Elongation at break is 22% and the elastic modulus is 195 GPa (28.3 Msi).
Thermal6
G-NiCr15-F is rated for continuous service to 1,050°C (1,922 °F). It conducts heat at 14 W/m·K (8.09 BTU/hr·ft·°F), better than 77% of nickel alloy grades. Thermal expansion is 13.3 µm/m·K (7.39 µin/in·°F).
Electrical3
G-NiCr15-F conducts electricity at 1.6 % IACS, better than 70% 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 G-NiCr15-F takes about 155 MJ of energy and emits 13 kg of CO₂ — less than 58% of nickel alloy grades. Typical recycled content is 45%.
Manufacturability8
G-NiCr15-F's machinability is poor (25/100, better than 76% of nickel alloy grades); weldability good (60/100); formability poor (15/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with G-NiCr15-F
Is G-NiCr15 easy to machine?
Machine like Alloy 600 castings: rigid setup, sharp positive-rake carbide, low speed (15–30 m/min) with heavy constant feed and flood coolant to avoid work hardening and glazing.
Can G-NiCr15 be welded?
GTAW/SMAW with matching Ni-Cr or ERNiCr-3/ENiCrFe-3 filler; preheat is unnecessary but keep interpass low, minimise heat input and grind out casting skin to avoid porosity and hot cracking.
Can G-NiCr15 be formed, bent or molded?
Supplied as sand, investment or centrifugal castings; needs generous fillets, controlled Si for fluidity and adequate risering because of the long freezing range — not a cold-forming alloy.
What surface finishes work on G-NiCr15?
Grit blast and pickle to remove casting scale, then passivate; anodising does not apply, aluminising or ceramic wash coats can extend life above 1000 °C.
G-NiCr15 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 |
|---|---|---|
| Crprovides oxidation and carburisation resistance | 14 – 17 | 15.5 |
| Fe | 5 – 10 | 8 |
| Chigher than wrought NiCr15Fe to aid castability | 0.05 – 0.2 | 0.12 |
| Siimproves fluidity and oxidation resistance | 0.5 – 2 | 1.2 |
| Mn | ≤ 1.5 | 0.7 |
| Cu | ≤ 0.5 | 0.1 |
| S | ≤ 0.02 | 0.01 |
| P | ≤ 0.03 | 0.01 |
| Nitypically ≥ 72 % | balance | — |
G-NiCr15-F — frequently asked
What is G-NiCr15-F used for?
G-NiCr15-F is typically used for furnace muffles, heating element supports and resistor fittings. In short: most ductile cast Ni-Cr; best-machining of the family; furnace hardware standard.
What is the yield strength of G-NiCr15-F?
G-NiCr15-F has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 480 MPa (69.6 ksi) — weaker than 87% of nickel alloy grades. Strength varies by condition: see the 4 listed tempers.
Is G-NiCr15-F easy to machine?
Not especially — machinability is rated poor (25/100, better than 76% of nickel alloy grades). Machine like Alloy 600 castings: rigid setup, sharp positive-rake carbide, low speed (15–30 m/min) with heavy constant feed and flood coolant to avoid work hardening and glazing.
Can G-NiCr15-F be welded?
Yes — weldability is rated good (60/100). GTAW/SMAW with matching Ni-Cr or ERNiCr-3/ENiCrFe-3 filler; preheat is unnecessary but keep interpass low, minimise heat input and grind out casting skin to avoid porosity and hot cracking.
What surface finishes work on G-NiCr15-F?
Grit blast and pickle to remove casting scale, then passivate; anodising does not apply, aluminising or ceramic wash coats can extend life above 1000 °C.
Can G-NiCr15-F be formed, bent or molded?
Supplied as sand, investment or centrifugal castings; needs generous fillets, controlled Si for fluidity and adequate risering because of the long freezing range — not a cold-forming alloy.
What is the maximum service temperature of G-NiCr15-F?
G-NiCr15-F is rated for continuous use to about 1,050°C (1,922 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between G-NiCr15-F and G-NiCr15-SA?
F is the default condition — standard supply condition for furnace hardware, grids and fixtures where dimensional stability at temperature matters more than peak strength. SA: choose when maximum ductility, homogenised carbide distribution and best corrosion/oxidation behaviour are needed before service or machining. Yield strength is 250 MPa in F versus 220 MPa in SA.
Sources
- DIN 17745 — Wrought and cast nickel-chromium materials, material No. 2.4815 — DIN (2002)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (High-temperature nickel alloys) — ASM International (2005)
- ASM Handbook Vol. 15 — Casting (Nickel-alloy foundry practice) — ASM International (2008)
- Heat-resistant Ni-Cr furnace casting alloy datasheets — Various foundries (EU/CN) (2023)
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.