Nickel Alloy Inconel 600-ANN (Annealed)
Heat-treated state · default condition
UNS N06600 · ASTM B168 · EN 2.4816, NiCr15Fe
Default stocked condition for plate, sheet, tube and bar: maximum ductility, best corrosion behaviour and full weldability.
Values for the ANN condition
Other Inconel 600 tempers and conditions
Inconel 600 is listed in 7 conditions; see the grade overview at Inconel 600.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ANNDefaultThis page Annealed | Default stocked condition for plate, sheet, tube and bar: maximum ductility, best corrosion behaviour and full weldability. | 255 | 620 | 42 | 150 HB | — |
Hot Worked / Hot Finished | Pick for heavy bar, forgings and hot-rolled plate where slightly higher strength than annealed is acceptable and full anneal is not required. | 330 | 660 | 38 | 170 HB | — |
As-welded deposit | Typical all-weld-metal properties for joints in alloy 600 fabrications; strength matches annealed base metal. | 380 | 620 | 35 | 165 HB | 1.6 % IACS |
Cold Drawn, Stress Relieved | Cold-drawn rod and tube with a low-temperature stress relief: tighter tolerance, better surface and moderately raised yield strength. | 480 | 720 | 25 | 200 HB | — |
Quarter hard | Light cold work for springy strip and stampings that still need appreciable bend ductility. | 520 | 750 | 22 | 18 HRC | 1.7 % IACS |
Half hard | Choose when higher yield strength is needed for springs, clips, bellows or thin-wall tubing with limited forming afterwards. | 700 | 880 | 12 | 25 HRC | — |
Full hard | Maximum strength and spring properties in strip and wire; almost no residual formability and cold work must not be exposed to high service temperature. | 930 | 1,070 | 4 | 34 HRC | — |
What is Inconel 600-ANN?
Inconel 600-ANN is Inconel 600 heat treated to ANN — default stocked condition for plate, sheet, tube and bar: maximum ductility, best corrosion behaviour and full weldability. Inconel 600-ANN has a yield strength of 255 MPa (37 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 85% of nickel alloy grades. Elongation at break is 42% and the elastic modulus is 214 GPa (31 Msi). Inconel 600-ANN has a density of 8.47 g/cm³ (0.306 lb/in³), heavier than 63% of nickel alloy grades. It melts at 1,354°C (2,469 °F).
Advantages
- High service temperature — 1,100°C (2,012 °F), better than 88% of nickel alloy grades
- Forms and bends easily — 78/100, better than 87% of nickel alloy grades
- Tough — resists crack growth — 130 MPa·√m (118.3 ksi·√in), better than 85% of nickel alloy grades
- Conducts heat well — 14.9 W/m·K (8.61 BTU/hr·ft·°F), better than 80% of nickel alloy grades
- High electrical conductivity — 1.7 % IACS, better than 76% of nickel alloy grades
Limitations
- Low strength — 255 MPa (37 ksi), worse than 85% of nickel alloy grades
Inconel 600-ANN properties
Typical room-temperature values for Inconel 600-ANN; 15 are specific to this condition. Other listed values are Inconel 600 reference data and may not represent this condition. Bars are the position among nickel alloy grades.
Physical3
Inconel 600-ANN has a density of 8.47 g/cm³ (0.306 lb/in³), heavier than 63% of nickel alloy grades. It melts at 1,354°C (2,469 °F).
Mechanical14
Inconel 600-ANN has a yield strength of 255 MPa (37 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 85% of nickel alloy grades. Elongation at break is 42% and the elastic modulus is 214 GPa (31 Msi).
Thermal6
Inconel 600-ANN is rated for continuous service to 1,100°C (2,012 °F). It conducts heat at 14.9 W/m·K (8.61 BTU/hr·ft·°F), better than 80% of nickel alloy grades. Thermal expansion is 13.3 µm/m·K (7.39 µin/in·°F).
Electrical3
Inconel 600-ANN conducts electricity at 1.7 % IACS, better than 76% of nickel alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (78/100), better than 51% of nickel alloy grades.
Sustainability4
Producing a kilogram of Inconel 600-ANN takes about 150 MJ of energy and emits 11.5 kg of CO₂ — less than 68% of nickel alloy grades. Typical recycled content is 40%.
Manufacturability8
Inconel 600-ANN's machinability is poor (28/100, better than 82% of nickel alloy grades); weldability very good (80/100); formability very good (78/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Inconel 600-ANN
Is Inconel 600 easy to machine?
Gummy and work-hardening: use rigid setups, positive-rake sharp carbide, low speed (20–35 m/min) with heavy feed, generous flood coolant and never dwell in the cut.
Can Inconel 600 be welded?
Readily welded by GTAW/GMAW/SMAW with ERNiCr-3 or ENiCrFe-3, no pre- or post-weld heat treatment normally required; keep interpass heat input low and surfaces free of sulphur-bearing contaminants.
Can Inconel 600 be formed, bent or molded?
Excellent cold formability in the annealed state but high work-hardening rate demands ~50 % more press force than austenitic stainless; hot work 870–1230 °C and anneal near 980–1010 °C after heavy cold work.
What surface finishes work on Inconel 600?
Not anodizable — pickle in HNO₃/HF or grind/blast to remove hot-work oxide, then passivate or electropolish; takes a good mechanical polish and can be electroplated after nickel strike.
Inconel 600 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 |
|---|---|---|
| Niplus cobalt, per ASTM B168 | ≥ 72 | 76 |
| Cr | 14 – 17 | 15.5 |
| Fe | 6 – 10 | 8 |
| C | ≤ 0.15 | 0.05 |
| Mn | ≤ 1 | 0.25 |
| Si | ≤ 0.5 | 0.25 |
| Cu | ≤ 0.5 | 0.15 |
| S | ≤ 0.02 | 0 |
Inconel 600-ANN — frequently asked
What is Inconel 600-ANN used for?
Inconel 600-ANN is typically used for furnace muffles, heat-treating fixtures, nuclear steam generator tubing and chemical processing. In short: general-purpose 1100 °C nickel alloy; resists chloride SCC; widest stock availability in family.
What is the yield strength of Inconel 600-ANN?
Inconel 600-ANN has a typical yield strength of 255 MPa (37 ksi) and a tensile strength of 620 MPa (89.9 ksi) — weaker than 85% of nickel alloy grades. Strength varies by condition: see the 7 listed tempers.
Is Inconel 600-ANN easy to machine?
Not especially — machinability is rated poor (28/100, better than 82% of nickel alloy grades). Gummy and work-hardening: use rigid setups, positive-rake sharp carbide, low speed (20–35 m/min) with heavy feed, generous flood coolant and never dwell in the cut.
Can Inconel 600-ANN be welded?
Yes — weldability is rated very good (80/100). Readily welded by GTAW/GMAW/SMAW with ERNiCr-3 or ENiCrFe-3, no pre- or post-weld heat treatment normally required; keep interpass heat input low and surfaces free of sulphur-bearing contaminants.
What surface finishes work on Inconel 600-ANN?
Not anodizable — pickle in HNO₃/HF or grind/blast to remove hot-work oxide, then passivate or electropolish; takes a good mechanical polish and can be electroplated after nickel strike.
Can Inconel 600-ANN be formed, bent or molded?
Excellent cold formability in the annealed state but high work-hardening rate demands ~50 % more press force than austenitic stainless; hot work 870–1230 °C and anneal near 980–1010 °C after heavy cold work.
What is the maximum service temperature of Inconel 600-ANN?
Inconel 600-ANN is rated for continuous use to about 1,100°C (2,012 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between Inconel 600-ANN and Inconel 600-FH?
ANN is the default condition — default stocked condition for plate, sheet, tube and bar: maximum ductility, best corrosion behaviour and full weldability. FH: maximum strength and spring properties in strip and wire; almost no residual formability and cold work must not be exposed to high service temperature. Yield strength is 255 MPa in ANN versus 930 MPa in FH.
Sources
- ASTM B168 — Ni-Cr-Fe Alloy Plate, Sheet and Strip (UNS N06600) — ASTM International (2019)
- ASTM B166 — Ni-Cr-Fe Alloy Rod, Bar and Wire — ASTM International (2019)
- INCONEL alloy 600 technical bulletin — Special Metals Corporation (2008)
- ASM Handbook Vol.2 — Properties of Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol.13B — Corrosion: Materials — ASM International (2005)
- GB/T 15007 / NS3102 (2017)
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.