Copper Alloy C83400 Continuous Cast
Finish state
UNS C83400
Choose for machined bar and tube stock — directional solidification gives denser, slightly stronger and more uniform material than sand castings.
Values for the Continuous Cast condition
Other C83400 tempers and conditions
C83400 is listed in 2 conditions; see the grade overview at C83400.
- As Cast
- Continuous Cast
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As CastDefault As Cast (M01/M02 sand or permanent-mold, as-cast condition) | Standard supply condition for ASTM B584 C83400 sand castings — electrical hardware and fittings needing conductivity plus corrosion resistance. | 69 | 234 | 35 | 50 HB | 32 % IACS |
Continuous CastThis page Continuous Cast (ASTM B505/B505M, as-cast bar & tube) | Choose for machined bar and tube stock — directional solidification gives denser, slightly stronger and more uniform material than sand castings. | 83 | 241 | 30 | 55 HB | 32 % IACS |
What is C83400 Continuous Cast?
C83400 Continuous Cast is C83400 supplied in the Continuous Cast condition — choose for machined bar and tube stock — directional solidification gives denser, slightly stronger and more uniform material than sand castings. C83400 Continuous Cast has a yield strength of 83 MPa (12 ksi) and a tensile strength of 241 MPa (35 ksi) — weaker than 89% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 96.5 GPa (14 Msi). C83400 Continuous Cast has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,010°C (1,850 °F). As Cast is the default condition FabDigit quotes; Continuous Cast is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 30%, better than 75% of copper alloy grades
Limitations
- Low stiffness — 96.5 GPa (14 Msi), worse than 90% of copper alloy grades
- Low strength — 83 MPa (12 ksi), worse than 89% of copper alloy grades
C83400 Continuous Cast properties
Typical room-temperature values for C83400 Continuous Cast; 19 are specific to this condition. Other listed values are C83400 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C83400 Continuous Cast has a density of 8.8 g/cm³ (0.318 lb/in³), heavier than 58% of copper alloy grades. It melts at 1,010°C (1,850 °F).
Mechanical13
C83400 Continuous Cast has a yield strength of 83 MPa (12 ksi) and a tensile strength of 241 MPa (35 ksi) — weaker than 89% of copper alloy grades. Elongation at break is 30% and the elastic modulus is 96.5 GPa (14 Msi).
Thermal6
C83400 Continuous Cast is rated for continuous service to 200°C (392 °F). It conducts heat at 159 W/m·K (91.9 BTU/hr·ft·°F), better than 73% of copper alloy grades. Thermal expansion is 18.4 µm/m·K (10.2 µin/in·°F).
Electrical3
C83400 Continuous Cast conducts electricity at 32 % IACS, better than 72% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 57% of copper alloy grades.
Sustainability4
Producing a kilogram of C83400 Continuous Cast takes about 58 MJ of energy and emits 3.6 kg of CO₂ — more than 61% of copper alloy grades. Typical recycled content is 80%.
Manufacturability7
C83400 Continuous Cast's machinability is good (58/100, better than 73% of copper alloy grades); weldability fair (45/100); formability poor (30/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C83400 Continuous Cast
Is C83400 easy to machine?
Machines cleanly but with stringier chips than leaded red brass (65% rating); use sharp positive-rake tools, generous coolant and light finishing cuts.
Can C83400 be welded?
Oxyacetylene and braze welding with copper-silicon or low-fuming bronze filler work best; arc welding is only fair due to zinc fuming and porosity.
Can C83400 be formed, bent or molded?
A casting alloy — sand, permanent-mold and continuous casting all practical; good fluidity, moderate shrinkage, gate and riser generously for sound sections.
What surface finishes work on C83400?
Solders and brazes readily, takes bright buffing and decorative lacquer, and is easily nickel/chrome plated; no anodizing (copper base).
C83400 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 |
|---|---|---|
| Cuincludes Ag | 88 – 92 | 90 |
| Sn | ≤ 0.2 | 0.1 |
| Pb | ≤ 0.5 | 0.2 |
| Fe | ≤ 0.25 | — |
| Sb | ≤ 0.25 | — |
| NiNi + Co | ≤ 1 | — |
| S | ≤ 0.08 | — |
| P | ≤ 0.03 | — |
| Al | ≤ 0.01 | — |
| Si | ≤ 0.01 | — |
| Zn | ≥ 8 (balance) | — |
C83400 Continuous Cast — frequently asked
What is C83400 Continuous Cast used for?
C83400 Continuous Cast is typically used for electrical connectors and terminals, conductive brackets and clamps, screw machine hardware, plumbing and hardware fittings, fresh-water fittings and decorative cast components. In short: hard-wearing architectural bronze.
What is the yield strength of C83400 Continuous Cast?
C83400 Continuous Cast has a typical yield strength of 83 MPa (12 ksi) and a tensile strength of 241 MPa (35 ksi) — weaker than 89% of copper alloy grades. Strength varies by condition: see the 2 listed tempers.
Is C83400 Continuous Cast easy to machine?
Reasonably — machinability is rated good (58/100, better than 73% of copper alloy grades). Machines cleanly but with stringier chips than leaded red brass (65% rating); use sharp positive-rake tools, generous coolant and light finishing cuts.
Can C83400 Continuous Cast be welded?
With care — weldability is rated fair (45/100). Oxyacetylene and braze welding with copper-silicon or low-fuming bronze filler work best; arc welding is only fair due to zinc fuming and porosity.
What surface finishes work on C83400 Continuous Cast?
Solders and brazes readily, takes bright buffing and decorative lacquer, and is easily nickel/chrome plated; no anodizing (copper base).
Can C83400 Continuous Cast be formed, bent or molded?
A casting alloy — sand, permanent-mold and continuous casting all practical; good fluidity, moderate shrinkage, gate and riser generously for sound sections.
What is the maximum service temperature of C83400 Continuous Cast?
C83400 Continuous Cast is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Can FabDigit make parts in C83400 Continuous Cast?
Yes — C83400 Continuous Cast is available for CNC machining with instant online pricing. Upload a STEP file to get a price and a DFM check.
Sources
- ASTM B584 — Copper Alloy Sand Castings for General Applications — ASTM International (2022)
- ASTM B505/B505M — Copper Alloy Continuous Castings — ASTM International (2018)
- CDA Alloy Database — C83400 property sheet — 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. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.