Copper Alloy CC492K
EN CC492K
CC492K (CuSn7Zn2Pb3-C, C92200) is a leaded tin bronze with balanced tin, zinc and lead, similar in character to Navy-M bronze grades.
Reference datasheet — CC492K 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 GC condition
CC492K tempers and conditions
CC492K is supplied in 4 conditions, soft to hard. GC is the default FabDigit quotes; the values on this page are for it.
Compare all 4 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Sand cast | Choose for large, complex pump/valve housings and one-off castings where section size varies. | 125 | 245 | 18 | 68 HB | 14 % IACS |
Permanent (chill) mould cast | Choose for medium-volume small fittings where finer grain and better surface than sand casting are needed. | 135 | 275 | 14 | 75 HB | 14 % IACS |
Centrifugal cast | Choose for large-diameter bushings, sleeves and worm-wheel rims needing dense, porosity-free walls. | 140 | 285 | 15 | 78 HB | 14 % IACS |
GCDefault Continuous cast bar / tube | Default stock condition — continuously cast round bar and tube for machined bushings, nuts and valve parts. | 150 | 290 | 14 | 80 HB | 14 % IACS |
What is CC492K?
CC492K (CuSn7Zn2Pb3-C, C92200) is a leaded tin bronze with balanced tin, zinc and lead, similar in character to Navy-M bronze grades. The lead phase gives a machinability score of 80 and the alloy casts pressure-tight, so it is used for valve and pump bodies in steam and water service, as sand (GS), gravity die (GM), centrifugal (GZ) and continuous (GC) castings at 150 MPa yield, 290 MPa tensile, 14 % elongation and 80 HB. Service is limited to 230 °C and fusion welding is unreliable. Choose CC483K for higher wear capacity, or CC491K gunmetal for lower cost. CC492K has a density of 8.75 g/cm³ (0.316 lb/in³), lighter than 51% of copper alloy grades. It melts at 850°C (1,562 °F). CC492K has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 69% of copper alloy grades. Elongation at break is 14% and the elastic modulus is 98 GPa (14.2 Msi).
What is CC492K used for?
- valve bodies
- pump casings
- fittings
- steam and water service components
Advantages
- Easy to machine — 80/100, better than 86% of copper alloy grades
Limitations
- Hard to polish — 65/100, worse than 87% of copper alloy grades
- Low stiffness — 98 GPa (14.2 Msi), worse than 86% of copper alloy grades
- Limited formability — 15/100, worse than 79% of copper alloy grades
CC492K properties
Typical room-temperature values for CC492K-GC; bars are the position among copper alloy grades.
Physical3
CC492K has a density of 8.75 g/cm³ (0.316 lb/in³), lighter than 51% of copper alloy grades. It melts at 850°C (1,562 °F).
Mechanical15
CC492K has a yield strength of 150 MPa (21.8 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 69% of copper alloy grades. Elongation at break is 14% and the elastic modulus is 98 GPa (14.2 Msi).
Thermal6
CC492K is rated for continuous service to 230°C (446 °F). It conducts heat at 68 W/m·K (39.3 BTU/hr·ft·°F), worse than 56% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
CC492K conducts electricity at 14 % IACS, worse than 56% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (66/100), better than 64% of copper alloy grades.
Sustainability4
Producing a kilogram of CC492K takes about 58 MJ of energy and emits 4 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 80%.
Manufacturability7
CC492K's machinability is very good (80/100, better than 86% of copper alloy grades); weldability poor (30/100); formability poor (15/100).
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 copper alloy family
Yield strength against density for every copper alloy grade FabDigit runs. CC492K is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC492K
Is CC492K easy to machine?
Excellent free-machining behaviour from the lead phase; use sharp positive-rake carbide or HSS tooling, high speed, light feed, soluble-oil coolant — chips break short.
Can CC492K be welded?
Fusion welding is unreliable because of lead and tin segregation; use brazing or soft soldering, or braze-repair castings with low-fuming bronze rod and preheat.
Can CC492K be formed, bent or molded?
Cast-only alloy with a wide freezing range — feed heavily with risers/chills, pour ~1100–1150 °C, and degas to avoid tin-sweat and microporosity in pressure parts.
CC492K 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 |
|---|---|---|
| Sn | 6 – 8 | 7 |
| Zn | 1 – 3 | 2 |
| Pb | 2 – 4 | 3 |
| Niincl. Co | ≤ 2 | |
| Fe | ≤ 0.3 | |
| Sb | ≤ 0.25 | |
| Plower limit applies for weld-repaired castings | ≤ 0.1 | |
| S | ≤ 0.1 | |
| Mn | ≤ 0.2 | |
| Al | ≤ 0.01 | |
| Si | ≤ 0.01 | |
| Cu | ≥ 84 (balance) |
What surface finishes work on CC492K?
Takes fine turning and burnishing well, can be tin-, nickel- or chrome-plated after thorough degreasing; mirror polishing is limited by the free lead, patinating and clear-lacquering are common.
Surface treatments FabDigit runs on copper 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).
Equivalent designations
Standards and trade names that resolve to Copper Alloy CC492K in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuSn7Zn2Pb3-C
- Similar grades
- C92200
How much does CC492K cost?
CC492K is a high-cost copper 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.
CC492K — frequently asked
What is CC492K used for?
CC492K is typically used for valve bodies, pump casings, fittings and steam and water service components. In short: machinability score 80; pressure-tight leaded bronze; steam-service gunmetal.
What is the yield strength of CC492K?
CC492K has a typical yield strength of 150 MPa (21.8 ksi) and a tensile strength of 290 MPa (42.1 ksi) — weaker than 69% of copper alloy grades. Strength varies by condition: see the 4 listed tempers.
Is CC492K easy to machine?
Yes — machinability is rated very good (80/100, better than 86% of copper alloy grades). Excellent free-machining behaviour from the lead phase; use sharp positive-rake carbide or HSS tooling, high speed, light feed, soluble-oil coolant — chips break short.
Can CC492K be welded?
Not readily — weldability is rated poor (30/100). Fusion welding is unreliable because of lead and tin segregation; use brazing or soft soldering, or braze-repair castings with low-fuming bronze rod and preheat.
What surface finishes work on CC492K?
Takes fine turning and burnishing well, can be tin-, nickel- or chrome-plated after thorough degreasing; mirror polishing is limited by the free lead, patinating and clear-lacquering are common.
Can CC492K be formed, bent or molded?
Cast-only alloy with a wide freezing range — feed heavily with risers/chills, pour ~1100–1150 °C, and degas to avoid tin-sweat and microporosity in pressure parts.
What is the maximum service temperature of CC492K?
CC492K is rated for continuous use to about 230°C (446 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CC492K-GC and CC492K-GS?
GC is the default condition — default stock condition — continuously cast round bar and tube for machined bushings, nuts and valve parts. GS: choose for large, complex pump/valve housings and one-off castings where section size varies. Yield strength is 150 MPa in GC versus 125 MPa in GS.
How much does CC492K cost?
CC492K is a high-cost copper 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
- EN 1982 — Copper and copper alloys: ingots and castings — CEN (2017)
- ASTM B584 — Copper Alloy Sand Castings for General Applications (C92200) — ASTM (2022)
- CDA Alloy Datasheet C92200 (Navy M bronze) — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- ASM Handbook Vol. 13B — Corrosion: Materials — ASM International (2005)
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.