Copper Alloy C83400 · finish state · default condition
Copper Alloy C83400 As Cast
Properties of the As Cast condition, compared with the other C83400 tempers.
Standard supply condition for ASTM B584 C83400 sand castings — electrical hardware and fittings needing conductivity plus corrosion resistance.
What is C83400 As Cast?
C83400 As Cast is C83400 supplied in the As Cast condition — standard supply condition for ASTM B584 C83400 sand castings — electrical hardware and fittings needing conductivity plus corrosion resistance. C83400 As Cast has a yield strength of 69 MPa (10 ksi) and a tensile strength of 234 MPa (33.9 ksi) — weaker than 96% of copper alloy grades. Elongation at break is 35% and the elastic modulus is 96.5 GPa (14 Msi). C83400 As 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).
Advantages
- Ductile — tolerates forming and impact — 35%, better than 79% of copper alloy grades
Limitations
- Low strength — 69 MPa (10 ksi), worse than 96% of copper alloy grades
- Low stiffness — 96.5 GPa (14 Msi), worse than 90% of copper alloy grades
C83400 As Cast properties
Typical room-temperature values for C83400 As Cast — 9 properties are specific to this condition; the rest are grade-level values shared by every C83400 temper. Each bar shows where the value sits among the copper alloy grades in FabDigit's library — further right is higher.
Physical3
C83400 As 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).
Mechanical10
C83400 As Cast has a yield strength of 69 MPa (10 ksi) and a tensile strength of 234 MPa (33.9 ksi) — weaker than 96% of copper alloy grades. Elongation at break is 35% and the elastic modulus is 96.5 GPa (14 Msi).
Thermal6
C83400 As 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 72% of copper alloy grades. Thermal expansion is 18.4 µm/m·K (10.2 µin/in·°F).
Electrical3
C83400 As Cast conducts electricity at 32 % IACS, better than 71% 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 As 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%.
Manufacturability6
C83400 As Cast's machinability is good (58/100, better than 74% of copper alloy grades); weldability fair (45/100).
Common Calculations5
Values are nominal handbook figures for design screening. Certified mill or lot data ships with every FabDigit order on request.
Other C83400 tempers and conditions
C83400 is also supplied in 1 other condition. The full side-by-side table is on the C83400 overview.
- As CastDefaultStandard supply condition for ASTM B584 C83400 sand castings — electrical hardware and fittings needing conductivity plus corrosion resistance.69 MPa yield · 50 HB
Working with C83400 As 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 As Cast — frequently asked
What is C83400 As Cast used for?
C83400 As 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 As Cast?
C83400 As Cast has a typical yield strength of 69 MPa (10 ksi) and a tensile strength of 234 MPa (33.9 ksi) — weaker than 96% of copper alloy grades. Strength varies by condition: see the 2 listed tempers.
Is C83400 As Cast easy to machine?
Reasonably — machinability is rated good (58/100, better than 74% 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 As 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 As Cast?
Solders and brazes readily, takes bright buffing and decorative lacquer, and is easily nickel/chrome plated; no anodizing (copper base).
Can C83400 As 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 As Cast?
C83400 As 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 As Cast?
Yes — C83400 As 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.