Precious Metal BAg-34 ASBRAZED
Heat-treated state
UNS P07380
Property basis for the solidified fillet/joint after brazing with proper clearance (0.05–0.13 mm).
Values for the ASBRAZED condition
What is BAg-34 ASBRAZED?
BAg-34 ASBRAZED is BAg-34 heat treated to ASBRAZED — property basis for the solidified fillet/joint after brazing with proper clearance (0.05–0.13 mm). BAg-34 ASBRAZED 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 85 GPa (12.3 Msi). BAg-34 ASBRAZED has a density of 9 g/cm³ (0.325 lb/in³), lighter than 92% of precious metal grades. It melts at 649°C (1,200 °F).
Advantages
- Lightweight — 9 g/cm³ (0.325 lb/in³), better than 92% of precious metal grades
- Low embodied carbon — 50 kg CO₂/kg, better than 90% of precious metal grades
- High strength — 250 MPa (36.3 ksi), better than 81% of precious metal grades
Limitations
- Needs corrosion protection — 55/100, worse than 94% of precious metal grades
- Hard to polish — 60/100, worse than 92% of precious metal grades
- Limited service temperature — 200°C (392 °F), worse than 89% of precious metal grades
- Difficult to weld — 20/100, worse than 86% of precious metal grades
BAg-34 ASBRAZED properties
Typical room-temperature values for BAg-34 ASBRAZED; 4 are specific to this condition. Other listed values are BAg-34 reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
BAg-34 ASBRAZED has a density of 9 g/cm³ (0.325 lb/in³), lighter than 92% of precious metal grades. It melts at 649°C (1,200 °F).
Mechanical9
BAg-34 ASBRAZED 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 85 GPa (12.3 Msi).
Thermal6
BAg-34 ASBRAZED is rated for continuous service to 200°C (392 °F). It conducts heat at 85 W/m·K (49.1 BTU/hr·ft·°F), worse than 53% of precious metal grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
BAg-34 ASBRAZED conducts electricity at 20 % IACS, better than 53% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (55/100), worse than 94% of precious metal grades.
Sustainability4
Producing a kilogram of BAg-34 ASBRAZED takes about 620 MJ of energy and emits 50 kg of CO₂ — less than 91% of precious metal grades. Typical recycled content is 45%.
Manufacturability6
BAg-34 ASBRAZED's machinability is fair (40/100, worse than 60% of precious metal grades); weldability poor (20/100); formability very good (80/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with BAg-34 ASBRAZED
Is BAg-34 easy to machine?
Rarely machined; the soft gummy alloy smears — use sharp, high-rake tooling and light cuts if trimming preforms.
Can BAg-34 be welded?
Not a weldable structural alloy; it is itself a filler — join by torch, induction, resistance or furnace brazing at 730–845 °C.
Can BAg-34 be formed, bent or molded?
Very ductile — readily drawn to fine wire, rolled to foil and stamped into rings and washers without interstage cracking.
What surface finishes work on BAg-34?
Remove all corrosive flux residue with hot water/citric-acid rinse after brazing; fillets can be lightly polished or plated after full flux removal.
BAg-34 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 |
|---|---|---|
| AgAWS A5.8 BAg-34 / UNS P07380 | 37 – 39 | 38 |
| Cu | 30 – 32 | 31 |
| Snlowers liquidus, improves wetting | 1.5 – 2.5 | 2 |
| Cdcadmium-free grade | ≤ 0.01 | 0 |
| Other (total)total of all other elements | ≤ 0.15 | |
| Zn | balance |
BAg-34 ASBRAZED — frequently asked
What is BAg-34 ASBRAZED used for?
BAg-34 ASBRAZED is typically used for general fabrication brazing, HVAC/refrigeration joints and cadmium-restricted production. In short: cadmium-free 35–40 % Ag substitute; very ductile, easy to preform; broad general-purpose filler.
What is the yield strength of BAg-34 ASBRAZED?
BAg-34 ASBRAZED 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-34 ASBRAZED easy to machine?
Not especially — machinability is rated fair (40/100, worse than 60% of precious metal grades). Rarely machined; the soft gummy alloy smears — use sharp, high-rake tooling and light cuts if trimming preforms.
Can BAg-34 ASBRAZED be welded?
Not readily — weldability is rated poor (20/100). Not a weldable structural alloy; it is itself a filler — join by torch, induction, resistance or furnace brazing at 730–845 °C.
What surface finishes work on BAg-34 ASBRAZED?
Remove all corrosive flux residue with hot water/citric-acid rinse after brazing; fillets can be lightly polished or plated after full flux removal.
Can BAg-34 ASBRAZED be formed, bent or molded?
Very ductile — readily drawn to fine wire, rolled to foil and stamped into rings and washers without interstage cracking.
What is the maximum service temperature of BAg-34 ASBRAZED?
BAg-34 ASBRAZED 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.
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 (Brazing Filler Metals) — ASM International (1993)
- GB/T 10046 (2018)
- Cadmium-free silver brazing alloy datasheets (38% Ag Cu-Zn-Sn) — Lucas-Milhaupt / Harris / (2023)
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.