Copper Alloy CC382H
EN CC382H
CC382H is a chromium-modified 30 % nickel cast copper-nickel (CuNi30Cr2FeMnSi-C) developed for higher strength and hardness than standard cast CuNi30.
Reference datasheet — CC382H 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
CC382H tempers and conditions
CC382H 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, as-cast | Standard sand-cast condition for pump casings, valve bodies and large marine castings. | 275 | 470 | 20 | 130 HB | 4.2 % IACS |
Permanent (gravity die) cast | Chill-cast small/medium parts; finer structure gives slightly higher strength than sand casting. | 290 | 490 | 20 | 135 HB | 4.2 % IACS |
Centrifugally cast | Choose for seamless rings, bushings, pump wear rings and tube blanks needing dense, pore-free metal. | 300 | 500 | 22 | 140 HB | 4.2 % IACS |
Continuously cast bar/tube | Continuous-cast stock for machined valve components and shafts; most uniform, lowest-porosity form. | 310 | 500 | 20 | 140 HB | 4.2 % IACS |
Solution treated and precipitation aged | Optional Cr/Si precipitation ageing when maximum strength and cavitation/wear resistance are required, at the cost of ductility. | 390 | 600 | 13 | 175 HB | 4.6 % IACS |
What is CC382H?
CC382H is a chromium-modified 30 % nickel cast copper-nickel (CuNi30Cr2FeMnSi-C) developed for higher strength and hardness than standard cast CuNi30. It is poured as sand, die, centrifugal and continuous castings and can be supplied heat treated (HT), reaching 275 MPa yield, 470 MPa tensile, 20 % elongation and 130 HB, which suits high-load seawater impellers and propellers. Elongation is lower than the plain 70-30 grade, service is limited to 300 °C, and there is no widely used UNS equivalent, so availability is narrower; CC383H is the niobium-stabilised alternative. CC382H has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,180°C (2,156 °F). CC382H has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 57% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 150 GPa (21.8 Msi).
What is CC382H used for?
- high-strength propellers
- seawater pump impellers
- naval fittings
Advantages
- Stiff — 150 GPa (21.8 Msi), better than 98% of copper alloy grades
- Good corrosion resistance — 82/100, better than 98% of copper alloy grades
- High service temperature — 300°C (572 °F), better than 85% of copper alloy grades
- Readily welded — 65/100, better than 80% of copper alloy grades
Limitations
- Poor heat conductor — 26 W/m·K (15 BTU/hr·ft·°F), worse than 98% of copper alloy grades
- Low electrical conductivity — 4.2 % IACS, worse than 98% of copper alloy grades
- Difficult to machine — 22/100, worse than 94% of copper alloy grades
- High embodied carbon — 6.5 kg CO₂/kg, worse than 94% of copper alloy grades
- Limited formability — 10/100, worse than 89% of copper alloy grades
CC382H properties
Typical room-temperature values for CC382H-GS; bars are the position among copper alloy grades.
Physical3
CC382H has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,180°C (2,156 °F).
Mechanical14
CC382H has a yield strength of 275 MPa (39.9 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 57% of copper alloy grades. Elongation at break is 20% and the elastic modulus is 150 GPa (21.8 Msi).
Thermal6
CC382H is rated for continuous service to 300°C (572 °F). It conducts heat at 26 W/m·K (15 BTU/hr·ft·°F), worse than 98% of copper alloy grades. Thermal expansion is 15.5 µm/m·K (8.61 µin/in·°F).
Electrical3
CC382H conducts electricity at 4.2 % IACS, worse than 98% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is very good (82/100), better than 98% of copper alloy grades.
Sustainability4
Producing a kilogram of CC382H takes about 85 MJ of energy and emits 6.5 kg of CO₂ — more than 92% of copper alloy grades. Typical recycled content is 40%.
Manufacturability8
CC382H's machinability is poor (22/100, worse than 94% of copper alloy grades); weldability good (65/100); 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. CC382H is highlighted; hover a dot for its name, or open the interactive family chart.
Working with CC382H
Is CC382H easy to machine?
Gummy and work-hardening — use sharp positive-rake carbide, heavy feed, low-to-moderate speed (40–70 m/min) and copious coolant; avoid dwelling to prevent glazing.
Can CC382H be welded?
Weldable by GTAW/GMAW with 70/30 Cu-Ni-Nb (ERCuNi) filler, no preheat, low interpass temperature; keep the melt free of sulphur, lead and phosphorus to avoid hot cracking.
Can CC382H be formed, bent or molded?
Casting grade only — pour hot with deoxidation (Mn/Si, avoid P), use generous risers and chills because of the long freezing range and high shrinkage (~2%).
CC382H 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 |
|---|---|---|
| NiCo counted with Ni | 29 – 32 | 30.5 |
| Crprincipal strengthening addition | 1.5 – 2.5 | 2 |
| Fe | 0.4 – 1 | 0.7 |
| Mn | 0.5 – 1.5 | 1 |
| Siwith Cr forms strengthening phase | 0.15 – 0.5 | 0.3 |
| C | ≤ 0.1 | |
| Pbmax — hot-cracking sensitive | ≤ 0.01 | |
| S | ≤ 0.02 | |
| P | ≤ 0.02 | |
| Zn | ≤ 0.5 | |
| Cu | balance |
What surface finishes work on CC382H?
Not anodizable; pickle/passivate after casting, allow a natural protective oxide film to form in clean seawater, and use epoxy or antifouling coatings only where required above waterline.
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 CC382H in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- EN / DIN / Werkstoff-Nr.
- CuNi30Cr2FeMnSi-C
How much does CC382H cost?
CC382H 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.
CC382H — frequently asked
What is CC382H used for?
CC382H is typically used for high-strength propellers, seawater pump impellers and naval fittings. In short: highest-hardness cast Cu-Ni; chromium-strengthened 30 % Ni; heat-treatable casting grade.
What is the yield strength of CC382H?
CC382H has a typical yield strength of 275 MPa (39.9 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 57% of copper alloy grades. Strength varies by condition: see the 5 listed tempers.
Is CC382H easy to machine?
Not especially — machinability is rated poor (22/100, worse than 94% of copper alloy grades). Gummy and work-hardening — use sharp positive-rake carbide, heavy feed, low-to-moderate speed (40–70 m/min) and copious coolant; avoid dwelling to prevent glazing.
Can CC382H be welded?
Yes — weldability is rated good (65/100). Weldable by GTAW/GMAW with 70/30 Cu-Ni-Nb (ERCuNi) filler, no preheat, low interpass temperature; keep the melt free of sulphur, lead and phosphorus to avoid hot cracking.
What surface finishes work on CC382H?
Not anodizable; pickle/passivate after casting, allow a natural protective oxide film to form in clean seawater, and use epoxy or antifouling coatings only where required above waterline.
Can CC382H be formed, bent or molded?
Casting grade only — pour hot with deoxidation (Mn/Si, avoid P), use generous risers and chills because of the long freezing range and high shrinkage (~2%).
What is the maximum service temperature of CC382H?
CC382H is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between CC382H-GS and CC382H-HT?
GS is the default condition — standard sand-cast condition for pump casings, valve bodies and large marine castings. HT: optional Cr/Si precipitation ageing when maximum strength and cavitation/wear resistance are required, at the cost of ductility. Yield strength is 275 MPa in GS versus 390 MPa in HT.
How much does CC382H cost?
CC382H 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)
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
- Copper-Nickel Alloy Datasheets — Copper Development Association (copper.org) (2023)
- Copper-Nickel Alloys for Seawater Service — technical guidance — Nickel Institute / CDA (2020)
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.