Precious Metal BAg-13a
UNS P07560
BAg-13a (UNS P07560) is the zinc-free, cadmium-free version of BAg-13, an Ag-Cu-Ni brazing filler that avoids zinc volatilization at brazing temperature.
Reference datasheet — BAg-13a 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.
BAg-13a tempers and conditions
BAg-13a is supplied in one standard condition, AS-BRAZED.
Supply forms, finishes and certifications
Ways BAg-13a is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
FOIL | Thin foil (≤0.10 mm) for vacuum brazing | Supply form |
PREFORM | Stamped / formed preform | Supply form |
STRIP | Rolled strip / shim | Supply form |
Wire-AnnDefault | Annealed wire / rod | Supply form |
WIRE-HD | Hard-drawn (spring temper) wire | Supply form |
PASTE | Braze paste | Printing process |
POWDER | Atomized powder | Printing process |
What is BAg-13a?
BAg-13a (UNS P07560) is the zinc-free, cadmium-free version of BAg-13, an Ag-Cu-Ni brazing filler that avoids zinc volatilization at brazing temperature. That makes it the default choice for vacuum and hydrogen furnace brazing of stainless steel assemblies, and it is supplied as annealed or hard-drawn wire, strip, foil, preforms, powder and paste. The deposit shows about 210 MPa yield, 420 MPa tensile and 22 % elongation, with a formability score of 85. The 900–980 °C brazing range and tight 0.05–0.13 mm clearance requirement limit base metal choice; BAg-13 is the lower-cost option where zinc loss is not a concern. BAg-13a has a density of 9.75 g/cm³ (0.352 lb/in³), lighter than 77% of precious metal grades. It melts at 771°C (1,420 °F). BAg-13a has a yield strength of 210 MPa (30.5 ksi) and a tensile strength of 420 MPa (60.9 ksi) — stronger than 61% of precious metal grades. Elongation at break is 22% and the elastic modulus is 95 GPa (13.8 Msi).
What is BAg-13a used for?
- vacuum furnace brazing
- stainless steel structural joints
- aerospace components
Advantages
- Easy to machine — 55/100, better than 86% of precious metal grades
Limitations
- Difficult to weld — 20/100, worse than 86% of precious metal grades
- Needs corrosion protection — 65/100, worse than 77% of precious metal grades
BAg-13a properties
Typical room-temperature values; bars are the position among precious metal grades.
Physical3
BAg-13a has a density of 9.75 g/cm³ (0.352 lb/in³), lighter than 77% of precious metal grades. It melts at 771°C (1,420 °F).
Mechanical10
BAg-13a has a yield strength of 210 MPa (30.5 ksi) and a tensile strength of 420 MPa (60.9 ksi) — stronger than 61% of precious metal grades. Elongation at break is 22% and the elastic modulus is 95 GPa (13.8 Msi).
Thermal6
BAg-13a is rated for continuous service to 400°C (752 °F). It conducts heat at 120 W/m·K (69.3 BTU/hr·ft·°F), better than 62% of precious metal grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
BAg-13a conducts electricity at 30 % IACS, better than 65% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), worse than 77% of precious metal grades.
Sustainability4
Producing a kilogram of BAg-13a takes about 900 MJ of energy and emits 110 kg of CO₂ — less than 80% of precious metal grades. Typical recycled content is 60%.
Manufacturability7
BAg-13a's machinability is good (55/100, better than 86% of precious metal grades); weldability poor (20/100); formability very good (80/100).
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 precious metal family
Yield strength against density for every precious metal grade FabDigit runs. BAg-13a is highlighted; hover a dot for its name, or open the interactive family chart.
Working with BAg-13a
Is BAg-13a easy to machine?
Rarely machined; the soft Ag-Cu matrix is gummy — use sharp tools, high rake and light cuts if trimming preforms.
Can BAg-13a be welded?
Not a structural weld metal; joints are made by furnace, vacuum, hydrogen, induction or torch brazing at 900–980 °C with tight 0.05–0.13 mm clearance.
Can BAg-13a be formed, bent or molded?
Annealed stock draws to fine wire and rolls to 0.05 mm foil; interstage annealing needed because it work-hardens quickly.
BAg-13a 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 |
|---|---|---|
| Ag | 55 – 57 | 56 |
| Niimproves wetting of stainless steels and carbides | 1.5 – 2.5 | 2 |
| Cdcadmium-free grade; impurity limit | ≤ 0.01 | |
| Znzinc-free formulation; impurity limit for vacuum service | ≤ 0.5 | |
| Pimpurity limit | ≤ 0.01 | |
| Other (total)sum of unspecified elements | ≤ 0.15 | |
| Cu | balance |
What surface finishes work on BAg-13a?
Joints are normally left as-brazed; clean flux residues in hot water/acid, and passivate stainless assemblies afterwards — silver fillets tarnish in sulfur-bearing air.
Equivalent designations
Standards and trade names that resolve to Precious Metal BAg-13a in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- P07560
- Also called
- AWS BAg-13a
How much does BAg-13a cost?
BAg-13a is a high-cost precious metal ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
BAg-13a — frequently asked
What is BAg-13a used for?
BAg-13a is typically used for vacuum furnace brazing, stainless steel structural joints and aerospace components. In short: zinc-free for vacuum brazing; highest braze range in family; stainless-specific Ag-Cu-Ni filler.
What is the yield strength of BAg-13a?
BAg-13a has a typical yield strength of 210 MPa (30.5 ksi) and a tensile strength of 420 MPa (60.9 ksi) — stronger than 61% of precious metal grades.
Is BAg-13a easy to machine?
Reasonably — machinability is rated good (55/100, better than 86% of precious metal grades). Rarely machined; the soft Ag-Cu matrix is gummy — use sharp tools, high rake and light cuts if trimming preforms.
Can BAg-13a be welded?
Not readily — weldability is rated poor (20/100). Not a structural weld metal; joints are made by furnace, vacuum, hydrogen, induction or torch brazing at 900–980 °C with tight 0.05–0.13 mm clearance.
What surface finishes work on BAg-13a?
Joints are normally left as-brazed; clean flux residues in hot water/acid, and passivate stainless assemblies afterwards — silver fillets tarnish in sulfur-bearing air.
Can BAg-13a be formed, bent or molded?
Annealed stock draws to fine wire and rolls to 0.05 mm foil; interstage annealing needed because it work-hardens quickly.
What is the maximum service temperature of BAg-13a?
BAg-13a is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does BAg-13a cost?
BAg-13a is a high-cost precious metal ($$$$), 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
- AWS A5.8M/A5.8 Specification for Filler Metals for Brazing and Braze Welding — American Welding Society (2019)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- AWS Brazing Handbook, 5th ed. — American Welding Society (2007)
- Silver brazing alloy datasheets (Ag56CuNi / Braze 560 type) — Lucas-Milhaupt / Umicore / Materion (2023)
- GB/T 10046 (2018)
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.