Copper Alloy C47000 AS-WELDED
Other · default condition
UNS C47000
Default condition: properties of the solidified braze-weld/fillet deposit on steel or cast iron.
Values for the AS-WELDED condition
Other C47000 tempers and conditions
C47000 is listed in 2 conditions; see the grade overview at C47000.
- O60
- AS-WELDED
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Soft annealed | Pick when maximum ductility is needed for coiling, spooled wire feed or forming before use. | 150 | 370 | 42 | 90 HB | 26 % IACS |
AS-WELDEDDefaultThis page deposited braze-weld metal (RBCuZn-A) | Default condition: properties of the solidified braze-weld/fillet deposit on steel or cast iron. | 160 | 350 | 32 | 100 HB | 26 % IACS |
What is C47000 AS-WELDED?
C47000 AS-WELDED is C47000 in the AS-WELDED condition — default condition: properties of the solidified braze-weld/fillet deposit on steel or cast iron. C47000 AS-WELDED has a yield strength of 160 MPa (23.2 ksi) and a tensile strength of 350 MPa (50.8 ksi) — weaker than 65% of copper alloy grades. Elongation at break is 32% and the elastic modulus is 100 GPa (14.5 Msi). C47000 AS-WELDED has a density of 8.41 g/cm³ (0.304 lb/in³), lighter than 72% of copper alloy grades. It melts at 885°C (1,625 °F).
Advantages
- Ductile — tolerates forming and impact — 32%, better than 77% of copper alloy grades
- Readily welded — 60/100, better than 76% of copper alloy grades
Limitations
- Low stiffness — 100 GPa (14.5 Msi), worse than 82% of copper alloy grades
C47000 AS-WELDED properties
Typical room-temperature values for C47000 AS-WELDED; 20 are specific to this condition. Other listed values are C47000 reference data and may not represent this condition. Bars are the position among copper alloy grades.
Physical3
C47000 AS-WELDED has a density of 8.41 g/cm³ (0.304 lb/in³), lighter than 72% of copper alloy grades. It melts at 885°C (1,625 °F).
Mechanical14
C47000 AS-WELDED has a yield strength of 160 MPa (23.2 ksi) and a tensile strength of 350 MPa (50.8 ksi) — weaker than 65% of copper alloy grades. Elongation at break is 32% and the elastic modulus is 100 GPa (14.5 Msi).
Thermal6
C47000 AS-WELDED is rated for continuous service to 200°C (392 °F). It conducts heat at 116 W/m·K (67 BTU/hr·ft·°F), better than 64% of copper alloy grades. Thermal expansion is 21.2 µm/m·K (11.8 µin/in·°F).
Electrical3
C47000 AS-WELDED conducts electricity at 26 % IACS, better than 63% of copper alloy grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 68% of copper alloy grades.
Sustainability4
Producing a kilogram of C47000 AS-WELDED takes about 55 MJ of energy and emits 3.6 kg of CO₂ — less than 72% of copper alloy grades. Typical recycled content is 55%.
Manufacturability8
C47000 AS-WELDED's machinability is good (55/100, better than 71% of copper alloy grades); weldability good (60/100); formability fair (50/100).
Common Calculations5
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with C47000 AS-WELDED
Is C47000 easy to machine?
Braze deposits machine like naval brass (~30 % of AISI 1212): use sharp positive-rake tools, light feeds; unleaded, so chips are stringy.
Can C47000 be welded?
Braze weld with neutral-to-slightly-oxidising oxy-acetylene flame or TIG at 850–900 °C with borate flux; keep base metal below its melting point and ventilate for zinc fume.
Can C47000 be formed, bent or molded?
Rod is supplied straight or coiled; α+β structure cold-bends moderately, anneal near 500 °C if heavy forming is required.
What surface finishes work on C47000?
Wire-brush/pickle off flux residue immediately; deposit takes polishing, tin or nickel plating, and clear lacquer — no anodizing.
C47000 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 |
|---|---|---|
| CuAWS A5.8/A5.27 RBCuZn-A | 57 – 61 | 59 |
| Snsuppresses zinc fuming, raises dezincification resistance | 0.25 – 1 | 0.6 |
| Pb | ≤ 0.05 | — |
| Femax (impurity) | ≤ 0.25 | — |
| Al | ≤ 0.01 | — |
| Other (total)total of unspecified elements | ≤ 0.5 | — |
| Znbalance, nominally ~40 % | balance | — |
C47000 AS-WELDED — frequently asked
What is C47000 AS-WELDED used for?
C47000 AS-WELDED is typically used for cast iron repair welding, sheet metal braze welding, galvanized steel joints and brass fabrication. In short: low-fuming braze-welding rod; colour-matched brass filler; joins dissimilar steel and brass.
What is the yield strength of C47000 AS-WELDED?
C47000 AS-WELDED has a typical yield strength of 160 MPa (23.2 ksi) and a tensile strength of 350 MPa (50.8 ksi) — weaker than 65% of copper alloy grades. Strength varies by condition: see the 2 listed tempers.
Is C47000 AS-WELDED easy to machine?
Reasonably — machinability is rated good (55/100, better than 71% of copper alloy grades). Braze deposits machine like naval brass (~30 % of AISI 1212): use sharp positive-rake tools, light feeds; unleaded, so chips are stringy.
Can C47000 AS-WELDED be welded?
Yes — weldability is rated good (60/100). Braze weld with neutral-to-slightly-oxidising oxy-acetylene flame or TIG at 850–900 °C with borate flux; keep base metal below its melting point and ventilate for zinc fume.
What surface finishes work on C47000 AS-WELDED?
Wire-brush/pickle off flux residue immediately; deposit takes polishing, tin or nickel plating, and clear lacquer — no anodizing.
Can C47000 AS-WELDED be formed, bent or molded?
Rod is supplied straight or coiled; α+β structure cold-bends moderately, anneal near 500 °C if heavy forming is required.
What is the maximum service temperature of C47000 AS-WELDED?
C47000 AS-WELDED 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.
What is the difference between C47000 AS-WELDED and C47000-O60?
AS-WELDED is the default condition — default condition: properties of the solidified braze-weld/fillet deposit on steel or cast iron. O60: pick when maximum ductility is needed for coiling, spooled wire feed or forming before use. Yield strength is 160 MPa in AS-WELDED versus 150 MPa in O60.
Sources
- AWS A5.8/A5.8M — Specification for Filler Metals for Brazing and Braze Welding — American Welding Society (2019)
- AWS A5.27/A5.27M — Copper and Copper-Alloy Rods for Oxyfuel Gas Welding — American Welding Society (2017)
- UNS C47000 alloy data (naval-brass welding rod) — Copper Development Association (copper.org) (2023)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys — ASM International (1990)
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.