Refractory Metal 60Cr-40Ni CENT
Other
UNS R20600 · ASTM A560 Gr 60Cr-40Ni
CENT = centrifugally cast
Pick for tubular sections — the finer, denser centrifugal structure raises strength and reduces porosity versus static casting.
Values for the CENT condition
Other 60Cr-40Ni tempers and conditions
60Cr-40Ni is listed in 4 conditions; see the grade overview at 60Cr-40Ni.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Stress relieved | Choose when casting residual stress or heavy weld repair must be relaxed before machining or thermal cycling service. | 290 | 400 | 3 | 15 HRC | 1.5 % IACS |
As-welded deposit | Used when 60Cr-40Ni is deposited as a sulfidation-resistant overlay on cheaper steel substrates rather than supplied as a solid casting. | 300 | 380 | 1 | 22 HRC | 1.5 % IACS |
FDefault As fabricated | Standard supply condition for A560 castings — used as-poured for burner nozzles, tube supports and glass-contact hardware. | 310 | 415 | 2 | 19 HRC | 1.5 % IACS |
CENTThis page Centrifugally cast | Pick for tubular sections — the finer, denser centrifugal structure raises strength and reduces porosity versus static casting. | 330 | 450 | 3 | 20 HRC | 1.5 % IACS |
What is 60Cr-40Ni CENT?
60Cr-40Ni CENT is 60Cr-40Ni in the CENT condition — pick for tubular sections — the finer, denser centrifugal structure raises strength and reduces porosity versus static casting. 60Cr-40Ni CENT has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — stronger than 50% of refractory metal grades. Elongation at break is 3% and the elastic modulus is 225 GPa (32.6 Msi). 60Cr-40Ni CENT has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 56% of refractory metal grades. It melts at 1,350°C (2,462 °F). F is the default condition FabDigit quotes; CENT is available on request or by drawing note.
Advantages
- Low embodied carbon — 8 kg CO₂/kg, better than 94% of refractory metal grades
Limitations
- Low electrical conductivity — 1.5 % IACS, worse than 99% of refractory metal grades
- Limited formability — 4/100, worse than 94% of refractory metal grades
- Hard to polish — 55/100, worse than 90% of refractory metal grades
- Limited ductility — 3%, worse than 88% of refractory metal grades
- Difficult to machine — 12/100, worse than 86% of refractory metal grades
60Cr-40Ni CENT properties
Typical room-temperature values for 60Cr-40Ni CENT; 23 are specific to this condition. Other listed values are 60Cr-40Ni reference data and may not represent this condition. Bars are the position among refractory metal grades.
Physical3
60Cr-40Ni CENT has a density of 7.7 g/cm³ (0.278 lb/in³), lighter than 56% of refractory metal grades. It melts at 1,350°C (2,462 °F).
Mechanical17
60Cr-40Ni CENT has a yield strength of 330 MPa (47.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — stronger than 50% of refractory metal grades. Elongation at break is 3% and the elastic modulus is 225 GPa (32.6 Msi).
Thermal5
60Cr-40Ni CENT is rated for continuous service to 1,150°C (2,102 °F). It conducts heat at 15 W/m·K (8.67 BTU/hr·ft·°F), worse than 83% of refractory metal grades. Thermal expansion is 11.5 µm/m·K (6.39 µin/in·°F).
Electrical3
60Cr-40Ni CENT conducts electricity at 1.5 % IACS, worse than 99% of refractory metal grades.
Chemical & Environmental3
Corrosion resistance is very good (84/100), worse than 53% of refractory metal grades.
Sustainability4
Producing a kilogram of 60Cr-40Ni CENT takes about 95 MJ of energy and emits 8 kg of CO₂ — less than 94% of refractory metal grades. Typical recycled content is 15%.
Manufacturability8
60Cr-40Ni CENT's machinability is not recommended (12/100, worse than 86% of refractory metal grades); weldability poor (20/100); formability not recommended (4/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 60Cr-40Ni CENT
Is 60Cr-40Ni easy to machine?
Treat as a hard, brittle casting — negative-rake carbide or CBN at low speed with rigid setups, or preferably grind/EDM; expect chipping at edges.
Can 60Cr-40Ni be welded?
GTAW with matching Cr-Ni filler, 200–350 °C preheat and controlled interpass, minimum heat input; hot cracking and post-weld brittleness are the main risks.
Can 60Cr-40Ni be formed, bent or molded?
No cold forming — parts are net-shape cast (sand, investment or centrifugal); hot working is not commercially practiced.
What surface finishes work on 60Cr-40Ni?
Grind or blast the casting skin; the service protection is the self-forming Cr₂O₃ scale, so no plating, anodizing or paint is used.
60Cr-40Ni 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 |
|---|---|---|
| Crprimary α-Cr phase former; source of sulfidation/oxidation resistance | 57 – 63 | 60 |
| Ckept low to limit carbide embrittlement | ≤ 0.1 | 0.05 |
| Si | ≤ 1 | 0.5 |
| Mn | ≤ 0.3 | 0.15 |
| Fe | ≤ 1 | 0.5 |
| S | ≤ 0.02 | — |
| P | ≤ 0.02 | — |
| Nibalance, nominally ~40 % | balance | — |
60Cr-40Ni CENT — frequently asked
What is 60Cr-40Ni CENT used for?
60Cr-40Ni CENT is typically used for high-temperature furnace components, heat-resistant castings for sulfur-bearing atmospheres, process industry fixtures and kiln hardware. In short: highest-Cr Cr-Ni casting; best sulfidation resistance in family; brittle, cast-to-shape only.
What is the yield strength of 60Cr-40Ni CENT?
60Cr-40Ni CENT has a typical yield strength of 330 MPa (47.9 ksi) and a tensile strength of 450 MPa (65.3 ksi) — stronger than 50% of refractory metal grades. Strength varies by condition: see the 4 listed tempers.
Is 60Cr-40Ni CENT easy to machine?
Not especially — machinability is rated not recommended (12/100, worse than 86% of refractory metal grades). Treat as a hard, brittle casting — negative-rake carbide or CBN at low speed with rigid setups, or preferably grind/EDM; expect chipping at edges.
Can 60Cr-40Ni CENT be welded?
Not readily — weldability is rated poor (20/100). GTAW with matching Cr-Ni filler, 200–350 °C preheat and controlled interpass, minimum heat input; hot cracking and post-weld brittleness are the main risks.
What surface finishes work on 60Cr-40Ni CENT?
Grind or blast the casting skin; the service protection is the self-forming Cr₂O₃ scale, so no plating, anodizing or paint is used.
Can 60Cr-40Ni CENT be formed, bent or molded?
No cold forming — parts are net-shape cast (sand, investment or centrifugal); hot working is not commercially practiced.
What is the maximum service temperature of 60Cr-40Ni CENT?
60Cr-40Ni CENT is rated for continuous use to about 1,150°C (2,102 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 60Cr-40Ni-F and 60Cr-40Ni-SR?
F is the default condition — standard supply condition for A560 castings — used as-poured for burner nozzles, tube supports and glass-contact hardware. SR: choose when casting residual stress or heavy weld repair must be relaxed before machining or thermal cycling service. Yield strength is 310 MPa in F versus 290 MPa in SR.
Sources
- ASTM A560/A560M — Standard Specification for Castings, Chromium-Nickel Alloy — ASTM International (2021)
- ASM Handbook Vol. 1 — Properties and Selection: Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials (high-temperature sulfidation) — ASM International (2005)
- Cr-Ni (50/50 and 60/40) heat-resistant casting alloy data — Duraloy / heat-resistant casting foundries (2020)
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.