Precious Metal BAg-35 AS-BRAZED
Heat-treated state
UNS P07351
Reference condition for design allowables of the solidified fillet/joint after brazing at 760–870 °C.
Values for the AS-BRAZED condition
What is BAg-35 AS-BRAZED?
BAg-35 AS-BRAZED is BAg-35 heat treated to AS-BRAZED — reference condition for design allowables of the solidified fillet/joint after brazing at 760–870 °C. BAg-35 AS-BRAZED has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 73% of precious metal grades. Elongation at break is 22% and the elastic modulus is 87 GPa (12.6 Msi). BAg-35 AS-BRAZED has a density of 9 g/cm³ (0.325 lb/in³), lighter than 92% of precious metal grades. It melts at 685°C (1,265 °F).
Advantages
- Low embodied carbon — 42 kg CO₂/kg, better than 94% of precious metal grades
- Lightweight — 9 g/cm³ (0.325 lb/in³), better than 92% of precious metal grades
- 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 — 62/100, worse than 83% of precious metal grades
- Hard to polish — 70/100, worse than 76% of precious metal grades
BAg-35 AS-BRAZED properties
Typical room-temperature values for BAg-35 AS-BRAZED; 6 are specific to this condition. Other listed values are BAg-35 reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
BAg-35 AS-BRAZED has a density of 9 g/cm³ (0.325 lb/in³), lighter than 92% of precious metal grades. It melts at 685°C (1,265 °F).
Mechanical15
BAg-35 AS-BRAZED has a yield strength of 240 MPa (34.8 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 73% of precious metal grades. Elongation at break is 22% and the elastic modulus is 87 GPa (12.6 Msi).
Thermal6
BAg-35 AS-BRAZED is rated for continuous service to 370°C (698 °F). It conducts heat at 90 W/m·K (52 BTU/hr·ft·°F), worse than 51% of precious metal grades. Thermal expansion is 19 µm/m·K (10.6 µin/in·°F).
Electrical3
BAg-35 AS-BRAZED conducts electricity at 21 % IACS, better than 57% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (62/100), worse than 83% of precious metal grades.
Sustainability4
Producing a kilogram of BAg-35 AS-BRAZED takes about 570 MJ of energy and emits 42 kg of CO₂ — less than 93% of precious metal grades. Typical recycled content is 45%.
Manufacturability8
BAg-35 AS-BRAZED's machinability is good (55/100, better than 86% of precious metal grades); weldability poor (20/100); formability excellent (85/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with BAg-35 AS-BRAZED
Is BAg-35 easy to machine?
Rarely machined; the alloy is soft and gummy — use sharp tooling and light cuts, or buy preforms instead.
Can BAg-35 be welded?
Not a fusion-weld material; it is the filler itself — braze at 760–870 °C with FB3-A (white) flux and heat the base metal, not the rod.
Can BAg-35 be formed, bent or molded?
Excellent hot and cold workability: continuously cast then drawn to wire, rolled to strip and stamped into rings, shims and washers with interanneals.
What surface finishes work on BAg-35?
Joints are used as-brazed after full flux-residue removal (hot water/citric or mechanical); fillets can be polished or subsequently nickel/tin plated.
BAg-35 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 |
|---|---|---|
| Agsilver content per AWS A5.8 / UNS P07351 | 34 – 36 | 35 |
| Cu | 31 – 33 | 32 |
| Cdcadmium-free grade; residual only | ≤ 0.01 | 0 |
| Pbimpurity limit | ≤ 0.03 | |
| Other (total)sum of unspecified elements | ≤ 0.15 | |
| Zn | balance |
BAg-35 AS-BRAZED — frequently asked
What is BAg-35 AS-BRAZED used for?
BAg-35 AS-BRAZED is typically used for general steel and copper alloy brazing, HVAC/refrigeration repair and replacement for cadmium-bearing fillers. In short: cadmium-free BAg-2 replacement; general-purpose silver filler; excellent wire and strip formability.
What is the yield strength of BAg-35 AS-BRAZED?
BAg-35 AS-BRAZED has a typical yield strength of 240 MPa (34.8 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 73% of precious metal grades.
Is BAg-35 AS-BRAZED easy to machine?
Reasonably — machinability is rated good (55/100, better than 86% of precious metal grades). Rarely machined; the alloy is soft and gummy — use sharp tooling and light cuts, or buy preforms instead.
Can BAg-35 AS-BRAZED be welded?
Not readily — weldability is rated poor (20/100). Not a fusion-weld material; it is the filler itself — braze at 760–870 °C with FB3-A (white) flux and heat the base metal, not the rod.
What surface finishes work on BAg-35 AS-BRAZED?
Joints are used as-brazed after full flux-residue removal (hot water/citric or mechanical); fillets can be polished or subsequently nickel/tin plated.
Can BAg-35 AS-BRAZED be formed, bent or molded?
Excellent hot and cold workability: continuously cast then drawn to wire, rolled to strip and stamped into rings, shims and washers with interanneals.
What is the maximum service temperature of BAg-35 AS-BRAZED?
BAg-35 AS-BRAZED is rated for continuous use to about 370°C (698 °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)
- Brazing Handbook, 5th ed. — American Welding Society (2007)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- Silver brazing alloy datasheets (Silver-flo / Braze series) — Johnson Matthey / Lucas-Milhaupt (2022)
- GB/T 10046 (2018)
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.