Precious Metal BAg-13 AS-BRAZED
Heat-treated state
UNS P07540
Use these numbers when analysing the joint itself rather than the filler stock.
Values for the AS-BRAZED condition
What is BAg-13 AS-BRAZED?
BAg-13 AS-BRAZED is BAg-13 heat treated to AS-BRAZED — use these numbers when analysing the joint itself rather than the filler stock. BAg-13 AS-BRAZED has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 81% of precious metal grades. Elongation at break is 25% and the elastic modulus is 90 GPa (13.1 Msi). BAg-13 AS-BRAZED has a density of 9.6 g/cm³ (0.347 lb/in³), lighter than 80% of precious metal grades. It melts at 718°C (1,324 °F).
Advantages
- High strength — 250 MPa (36.3 ksi), better than 81% of precious metal grades
- Low embodied carbon — 62 kg CO₂/kg, better than 81% of precious metal grades
Limitations
- Limited formability — 70/100, worse than 78% of precious metal grades
- Hard to polish — 70/100, worse than 76% of precious metal grades
BAg-13 AS-BRAZED properties
Typical room-temperature values for BAg-13 AS-BRAZED; 5 are specific to this condition. Other listed values are BAg-13 reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
BAg-13 AS-BRAZED has a density of 9.6 g/cm³ (0.347 lb/in³), lighter than 80% of precious metal grades. It melts at 718°C (1,324 °F).
Mechanical8
BAg-13 AS-BRAZED has a yield strength of 250 MPa (36.3 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 81% of precious metal grades. Elongation at break is 25% and the elastic modulus is 90 GPa (13.1 Msi).
Thermal6
BAg-13 AS-BRAZED is rated for continuous service to 400°C (752 °F). It conducts heat at 90 W/m·K (52 BTU/hr·ft·°F), worse than 51% of precious metal grades. Thermal expansion is 18 µm/m·K (10 µin/in·°F).
Electrical3
BAg-13 AS-BRAZED conducts electricity at 23 % IACS, better than 63% of precious metal grades.
Chemical & Environmental2
Corrosion resistance is very good (72/100), worse than 66% of precious metal grades.
Sustainability3
Producing a kilogram of BAg-13 AS-BRAZED takes about 800 MJ of energy and emits 62 kg of CO₂ — less than 83% of precious metal grades. Typical recycled content is 40%.
Manufacturability4
BAg-13 AS-BRAZED's formability very good (70/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with BAg-13 AS-BRAZED
Is BAg-13 easy to machine?
Not a structural machining stock; the deposited fillet is soft and gummy — use sharp tools and light cuts if a joint must be dressed.
Can BAg-13 be welded?
Not fusion-welded; it is itself a filler — braze at 857–970 °C with an active silver-brazing flux (or in dry H2/vacuum for the flux-free version) and avoid overheating that volatilises zinc.
Can BAg-13 be formed, bent or molded?
Readily drawn to wire, rolled to 0.05 mm strip and stamped into rings; interanneal to avoid edge cracking in heavy reductions.
What surface finishes work on BAg-13?
Remove all flux residue with hot water or acid pickle to prevent corrosion; the fillet can be polished or nickel/chrome plated, but avoid ammonia-based cleaners.
BAg-13 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 | 53 – 55 | 54 |
| Zn | 4 – 6 | 5 |
| Niwetting/corrosion addition | 0.5 – 1.5 | 1 |
| Cdimpurity limit; alloy is classed cadmium-free | ≤ 0.15 | |
| Others (total)total of other elements | ≤ 0.15 | |
| Curemainder, nominally ~40 % | balance |
BAg-13 AS-BRAZED — frequently asked
What is BAg-13 AS-BRAZED used for?
BAg-13 AS-BRAZED is typically used for stainless steel food equipment, chemical processing equipment and aerospace assemblies. In short: nickel-bearing for stainless wetting; higher braze range than BAg-3; cadmium-free corrosion-resistant filler.
What is the yield strength of BAg-13 AS-BRAZED?
BAg-13 AS-BRAZED has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 81% of precious metal grades.
Is BAg-13 AS-BRAZED easy to machine?
Not a structural machining stock; the deposited fillet is soft and gummy — use sharp tools and light cuts if a joint must be dressed.
Can BAg-13 AS-BRAZED be welded?
Not fusion-welded; it is itself a filler — braze at 857–970 °C with an active silver-brazing flux (or in dry H2/vacuum for the flux-free version) and avoid overheating that volatilises zinc.
What surface finishes work on BAg-13 AS-BRAZED?
Remove all flux residue with hot water or acid pickle to prevent corrosion; the fillet can be polished or nickel/chrome plated, but avoid ammonia-based cleaners.
Can BAg-13 AS-BRAZED be formed, bent or molded?
Readily drawn to wire, rolled to 0.05 mm strip and stamped into rings; interanneal to avoid edge cracking in heavy reductions.
What is the maximum service temperature of BAg-13 AS-BRAZED?
BAg-13 AS-BRAZED 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.
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)
- GB/T 10046 — (Silver brazing filler metals) (2018)
- Silver brazing alloy datasheets (BAg series, melting ranges and mechanical data) — Lucas-Milhaupt / Handy & Harman (2022)
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.