Copper Alloy CC499K
EN CC499K
A gunmetal-type leaded tin-zinc bronze similar in family to classic 85-5-5-5 gunmetal, chosen for pressure-tight castings, good corrosion resistance, and reasonable machinability in valves and fittings.
Reference datasheet — CC499K 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 GS condition
CC499K tempers and conditions
CC499K is supplied in 5 conditions, soft to hard. GS is the default FabDigit quotes; the values on this page are for it.
Compare all 5 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
GSDefault Sand cast | Default condition for valve bodies, pump housings and general fittings; lowest tooling cost, moderate strength. | 110 | 230 | 18 | 65 HB | 15 % IACS |
Investment / precision cast | For thin-walled, near-net-shape valve internals and decorative parts where machining allowance must be minimal. | 120 | 250 | 16 | 67 HB | 15 % IACS |
Permanent (chill) mould cast | Chill-mould casting for higher volume small fittings; finer grain gives ~15 % higher strength and better surface than sand. | 130 | 270 | 16 | 70 HB | 15 % IACS |
Centrifugally cast | Choose for pressure-tight rings, bushings and large-bore sleeves where a dense, inclusion-free wall is needed. | 140 | 280 | 16 | 70 HB | 15 % IACS |
Continuously cast | Standard stock form for bar, tube and bushing blanks — densest structure, best machining consistency. | 150 | 300 | 15 | 75 HB | 15 % IACS |
What is CC499K?
A gunmetal-type leaded tin-zinc bronze similar in family to classic 85-5-5-5 gunmetal, chosen for pressure-tight castings, good corrosion resistance, and reasonable machinability in valves and fittings. CC499K has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 854°C (1,569 °F). CC499K has a yield strength of 110 MPa (16 ksi) and a tensile strength of 230 MPa (33.4 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 90 GPa (13.1 Msi).
What is CC499K used for?
- Water and steam valve bodies
- Plumbing fittings
- Pump casings
- Marine hardware
- Pressure-tight castings
Advantages
- Easy to machine — 78/100, better than 82% of copper alloy grades
Limitations
- Low stiffness — 90 GPa (13.1 Msi), worse than 95% of copper alloy grades
- Hard to polish — 60/100, worse than 92% of copper alloy grades
- Limited formability — 10/100, worse than 89% of copper alloy grades
- Low strength — 110 MPa (16 ksi), worse than 82% of copper alloy grades
CC499K properties
Typical room-temperature values for CC499K-GS; bars are the position among copper alloy grades.
Physical3
CC499K has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 854°C (1,569 °F).
Mechanical15
CC499K has a yield strength of 110 MPa (16 ksi) and a tensile strength of 230 MPa (33.4 ksi) — weaker than 82% of copper alloy grades. Elongation at break is 18% and the elastic modulus is 90 GPa (13.1 Msi).
Thermal6
CC499K is rated for continuous service to 230°C (446 °F). It conducts heat at 70 W/m·K (40.4 BTU/hr·ft·°F), worse than 55% of copper alloy grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
CC499K conducts electricity at 15 % IACS, worse than 54% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (64/100), better than 52% of copper alloy grades.
Sustainability4
Producing a kilogram of CC499K takes about 58 MJ of energy and emits 3.9 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 70%.
Manufacturability8
CC499K's machinability is very good (78/100, better than 82% of copper alloy grades); weldability poor (30/100); formability not recommended (10/100).
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. CC499K is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC499K
Is CC499K easy to machine?
Very free-machining thanks to the lead phase — use sharp positive-rake carbide or HSS with light feeds, 0-degree to slightly negative rake on brass-style tooling, ample coolant, chips break short.
Can CC499K be welded?
Fusion welding is poor because lead causes hot cracking and porosity; repair by brazing/silver soldering or low-heat oxy-fuel bronze braze, preheat 150–250 °C and stress-relieve.
Can CC499K be formed, bent or molded?
A casting alloy only — good fluidity and pressure tightness with 1.5–2 % shrinkage; feed heavy sections generously and avoid gas pickup by degassing/deoxidising with P-Cu.
CC499K 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 | 4 – 6 | 5 |
| Zn | 4 – 6 | 5 |
| Pbthe closely related C83600 / ZCuSn5Pb5Zn5 uses Pb 4.0–6.0 | 1 – 3 | 2 |
| Niincl. Co | ≤ 2 | |
| Fe | ≤ 0.3 | |
| Sb | ≤ 0.25 | |
| S | ≤ 0.1 | |
| Phigher P permitted for continuous casting in some standards | ≤ 0.05 | |
| Al | ≤ 0.01 | |
| Si | ≤ 0.01 | |
| Cu | ≥ 84 (balance) |
What surface finishes work on CC499K?
Not anodizable; takes tin, nickel or chrome plating well after de-leading/etch, buffs to a bright bronze finish, and accepts chemical patinas or clear lacquer for architectural work.
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 CC499K in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuSn5Zn5Pb2-C
- Similar grades
- ZCuSn5Pb5Zn5C83600
How much does CC499K cost?
CC499K 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.
CC499K — frequently asked
What is CC499K used for?
CC499K is typically used for water and steam valve bodies, plumbing fittings, pump casings, marine hardware and pressure-tight castings. In short: standard pressure-tight gunmetal; good fluidity and machinability; service limit 230 °C.
What is the yield strength of CC499K?
CC499K has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 230 MPa (33.4 ksi) — weaker than 82% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC499K easy to machine?
Yes — machinability is rated very good (78/100, better than 82% of copper alloy grades). Very free-machining thanks to the lead phase — use sharp positive-rake carbide or HSS with light feeds, 0-degree to slightly negative rake on brass-style tooling, ample coolant, chips break short.
Can CC499K be welded?
Not readily — weldability is rated poor (30/100). Fusion welding is poor because lead causes hot cracking and porosity; repair by brazing/silver soldering or low-heat oxy-fuel bronze braze, preheat 150–250 °C and stress-relieve.
What surface finishes work on CC499K?
Not anodizable; takes tin, nickel or chrome plating well after de-leading/etch, buffs to a bright bronze finish, and accepts chemical patinas or clear lacquer for architectural work.
Can CC499K be formed, bent or molded?
A casting alloy only — good fluidity and pressure tightness with 1.5–2 % shrinkage; feed heavy sections generously and avoid gas pickup by degassing/deoxidising with P-Cu.
What is the maximum service temperature of CC499K?
CC499K 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 CC499K-GS and CC499K-GC?
GS is the default condition — default condition for valve bodies, pump housings and general fittings; lowest tooling cost, moderate strength. GC: standard stock form for bar, tube and bushing blanks — densest structure, best machining consistency. Yield strength is 110 MPa in GS versus 150 MPa in GC.
How much does CC499K cost?
CC499K 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 (C83600) — ASTM (2022)
- GB/T 1176 — (ZCuSn5Pb5Zn5) — SAC (2013)
- CDA alloy datasheet C83600 — Copper Development Association (2023)
- ASM Handbook Vol. 2 — Properties of 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.