Precious Metal BAg-26
UNS P07250
BAg-26 is a low-silver, cadmium-free, manganese-bearing braze filler (UNS P07250) used for economical general-purpose brazing of steel and copper alloys.
Reference datasheet — BAg-26 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.
Values for the ASBRAZED condition
BAg-26 tempers and conditions
BAg-26 is supplied in one standard condition, ASBRAZED. ASBRAZED is the default FabDigit quotes; the values on this page are for it.
Supply forms, finishes and certifications
Ways BAg-26 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
STRIP | Strip / Sheet preform | Supply form |
WIRE | Wire / Rod | Supply form |
POWDER | Powder / Paste | Printing process |
What is BAg-26?
BAg-26 is a low-silver, cadmium-free, manganese-bearing braze filler (UNS P07250) used for economical general-purpose brazing of steel and copper alloys. It is the cost-driven choice in the BAg family, supplied as wire, strip and powder, with as-brazed values of 400 MPa tensile, 250 MPa yield, 25% elongation and 110 HB. Maximum service temperature is 200 °C, so it is not suitable for elevated-temperature joints, and the 800–870 °C brazing range with zinc fuming requires ventilation and controlled heating. Step up to BAg-22 or BAg-21 where higher strength or service temperature is needed. BAg-26 has a density of 8.8 g/cm³ (0.318 lb/in³), lighter than 94% of precious metal grades. It melts at 705°C (1,301 °F). BAg-26 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).
What is BAg-26 used for?
- general steel brazing
- hardware and appliance manufacturing
- cost-sensitive production brazing
Advantages
- Lightweight — 8.8 g/cm³ (0.318 lb/in³), better than 94% 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
- Limited formability — 70/100, worse than 78% of precious metal grades
BAg-26 properties
Typical room-temperature values for BAg-26-ASBRAZED; bars are the position among precious metal grades.
Physical3
BAg-26 has a density of 8.8 g/cm³ (0.318 lb/in³), lighter than 94% of precious metal grades. It melts at 705°C (1,301 °F).
Mechanical9
BAg-26 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-26 is rated for continuous service to 200°C (392 °F). It conducts heat at 70 W/m·K (40.4 BTU/hr·ft·°F), worse than 63% of precious metal grades. Thermal expansion is 19 µm/m·K (10.6 µin/in·°F).
Electrical3
BAg-26 conducts electricity at 14 % IACS, worse than 70% of precious metal grades.
Chemical & Environmental2
Corrosion resistance is good (55/100), worse than 94% of precious metal grades.
Sustainability1
Typical recycled content is 40%.
Manufacturability6
BAg-26's machinability is fair (45/100, better than 59% of precious metal grades); formability very good (70/100).
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-26 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with BAg-26
Is BAg-26 easy to machine?
Rarely machined; the alloy is soft and gummy — use sharp tools and light feeds if trimming cast slugs.
Can BAg-26 be welded?
Not a structural weld filler; deposit by torch, induction or furnace brazing at 800–870 °C with a high-temperature borate flux, and avoid overheating to limit zinc fuming.
Can BAg-26 be formed, bent or molded?
Readily cold drawn to wire and rolled to thin strip/preforms with interstage annealing.
BAg-26 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 | 24 – 26 | 25 |
| Cu | 37 – 39 | 38 |
| Mn | 1.5 – 2.5 | 2 |
| Ni | 1.5 – 2.5 | 2 |
| Cdcadmium-free grade | ≤ 0.01 | |
| Other (total)sum of unspecified elements | ≤ 0.15 | |
| Zn | ≥ 31 (balance) |
What surface finishes work on BAg-26?
Joints are usually left as-brazed after flux removal in hot water/citric rinse; the fillet can be polished or nickel/chrome plated, and residual flux must be removed to prevent corrosion.
Equivalent designations
Standards and trade names that resolve to Precious Metal BAg-26 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- UNS
- P07250
- Also called
- AWS BAg-26
How much does BAg-26 cost?
BAg-26 is a high-cost precious metal ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
BAg-26 — frequently asked
What is BAg-26 used for?
BAg-26 is typically used for general steel brazing, hardware and appliance manufacturing and cost-sensitive production brazing. In short: lowest-cost BAg filler; cadmium-free low-silver grade; 200 °C service ceiling.
What is the yield strength of BAg-26?
BAg-26 has a typical yield strength of 250 MPa (36.3 ksi) and a tensile strength of 400 MPa (58 ksi) — stronger than 81% of precious metal grades.
Is BAg-26 easy to machine?
Reasonably — machinability is rated fair (45/100, better than 59% of precious metal grades). Rarely machined; the alloy is soft and gummy — use sharp tools and light feeds if trimming cast slugs.
Can BAg-26 be welded?
Not a structural weld filler; deposit by torch, induction or furnace brazing at 800–870 °C with a high-temperature borate flux, and avoid overheating to limit zinc fuming.
What surface finishes work on BAg-26?
Joints are usually left as-brazed after flux removal in hot water/citric rinse; the fillet can be polished or nickel/chrome plated, and residual flux must be removed to prevent corrosion.
Can BAg-26 be formed, bent or molded?
Readily cold drawn to wire and rolled to thin strip/preforms with interstage annealing.
What is the maximum service temperature of BAg-26?
BAg-26 is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does BAg-26 cost?
BAg-26 is a high-cost precious metal ($$$$), 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 A5.8/A5.8M — Specification for Filler Metals for Brazing and Braze Welding — American Welding Society (2019)
- ASTM B260 — Standard Specification for Brazing Filler Metal — ASTM International (2020)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering (Brazing Filler Metals) — ASM International (1993)
- Silver brazing alloy datasheets (low-silver Ag-Cu-Zn-Mn-Ni grades) — Lucas-Milhaupt / Handy & Harman (2022)
- 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.