Precious Metal Ag149
ISO ISO 17672 Ag149
Manganese-bearing high-strength silver brazing alloy with elevated liquidus, used for joining carbide tool tips and hard-facing components requiring higher joint strength than standard Ag-Cu-Zn fillers.
Reference datasheet — Ag149 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.
Ag149 tempers and conditions
Ag149 is supplied in one standard condition, AS-BRAZED.
Supply forms, finishes and certifications
Ways Ag149 is supplied — form, process route, surface or paperwork — without a datasheet of their own. The property values above apply.
| Option | What it is | Type |
|---|---|---|
FC-ROD | Flux-coated rod | Supply form |
POWDER-PASTE | Powder / Flux-mixed paste | Supply form |
PREFORM | Preform | Supply form |
RODDefault | Rod / Wire | Supply form |
ROD-HD | Rod / Wire | Supply form |
STRIP | Strip / Foil / Shim | Supply form |
What is Ag149?
Manganese-bearing high-strength silver brazing alloy with elevated liquidus, used for joining carbide tool tips and hard-facing components requiring higher joint strength than standard Ag-Cu-Zn fillers. Ag149 has a density of 9 g/cm³ (0.325 lb/in³), lighter than 92% of precious metal grades. It melts at 680°C (1,256 °F). Ag149 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 500 MPa (72.5 ksi) — stronger than 91% of precious metal grades. Elongation at break is 25% and the elastic modulus is 85 GPa (12.3 Msi).
What is Ag149 used for?
- tungsten-carbide saw tip brazing
- cutting tool tip attachment
- high-strength tool and die brazing
Advantages
- Lightweight — 9 g/cm³ (0.325 lb/in³), better than 92% of precious metal grades
- High strength — 300 MPa (43.5 ksi), better than 91% of precious metal grades
- Low embodied carbon — 55 kg CO₂/kg, better than 86% of precious metal grades
Limitations
- Needs corrosion protection — 58/100, worse than 90% of precious metal grades
- Limited formability — 55/100, worse than 89% of precious metal grades
- Low electrical conductivity — 11 % IACS, worse than 75% of precious metal grades
Ag149 properties
Typical room-temperature values; bars are the position among precious metal grades.
Physical3
Ag149 has a density of 9 g/cm³ (0.325 lb/in³), lighter than 92% of precious metal grades. It melts at 680°C (1,256 °F).
Mechanical10
Ag149 has a yield strength of 300 MPa (43.5 ksi) and a tensile strength of 500 MPa (72.5 ksi) — stronger than 91% of precious metal grades. Elongation at break is 25% and the elastic modulus is 85 GPa (12.3 Msi).
Thermal5
Ag149 is rated for continuous service to 400°C (752 °F). It conducts heat at 60 W/m·K (34.7 BTU/hr·ft·°F), worse than 72% of precious metal grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
Ag149 conducts electricity at 11 % IACS, worse than 75% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (58/100), worse than 90% of precious metal grades.
Sustainability4
Producing a kilogram of Ag149 takes about 780 MJ of energy and emits 55 kg of CO₂ — less than 86% of precious metal grades. Typical recycled content is 40%.
Manufacturability3
Ag149's formability good (55/100).
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. Ag149 is highlighted; hover a dot for its name, or open the interactive family chart.
Working with Ag149
Is Ag149 easy to machine?
Filler metal is not a structural machining stock; the solidified braze fillet is soft and gummy and should be ground rather than turned when cleaning carbide tips.
Can Ag149 be welded?
Not a weldable structural alloy — it is a brazing filler; brazing range 700–840 °C with high-temperature boron-modified flux (FH12/AWS FB3-C), short heat cycles to limit Zn loss.
Can Ag149 be formed, bent or molded?
Supplied as drawn wire, rolled strip and stamped preforms; anneal between draws because Mn/Ni cause rapid work hardening.
Ag149 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 | 48 – 50 | 49 |
| Cu | 15 – 17 | 16 |
| Mnimproves wetting of WC-Co and joint strength | 7 – 8 | 7.5 |
| Niraises strength and resistance to erosion of the carbide | 4 – 5 | 4.5 |
| CdCd-free grade; impurity limit | ≤ 0.01 | — |
| Pbimpurity limit | ≤ 0.03 | — |
| Other (total)total of unspecified elements | ≤ 0.15 | — |
| Znbalance, approx. 23 % | balance | — |
What surface finishes work on Ag149?
Remove all flux residue by hot water quench or 10% citric/sulphuric pickle; braze fillets can be lightly polished but will darken (Ag/Cu sulphide tarnish) in sulphur-bearing air.
Equivalent designations
Standards and trade names that resolve to Precious Metal Ag149 in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ISO
- ISO 17672 Ag149
How much does Ag149 cost?
Ag149 is a high-cost precious metal ($$$$), pricier than about 78% of the materials FabDigit quotes. Part price depends far more on geometry, tolerance and quantity than on the raw stock — upload a CAD file for a live quote.
Ag149 — frequently asked
What is Ag149 used for?
Ag149 is typically used for tungsten-carbide saw tip brazing, cutting tool tip attachment and high-strength tool and die brazing. In short: highest-strength silver braze; carbide tip specialist; elevated liquidus filler.
What is the yield strength of Ag149?
Ag149 has a typical yield strength of 300 MPa (43.5 ksi) and a tensile strength of 500 MPa (72.5 ksi) — stronger than 91% of precious metal grades.
Is Ag149 easy to machine?
Filler metal is not a structural machining stock; the solidified braze fillet is soft and gummy and should be ground rather than turned when cleaning carbide tips.
Can Ag149 be welded?
Not a weldable structural alloy — it is a brazing filler; brazing range 700–840 °C with high-temperature boron-modified flux (FH12/AWS FB3-C), short heat cycles to limit Zn loss.
What surface finishes work on Ag149?
Remove all flux residue by hot water quench or 10% citric/sulphuric pickle; braze fillets can be lightly polished but will darken (Ag/Cu sulphide tarnish) in sulphur-bearing air.
Can Ag149 be formed, bent or molded?
Supplied as drawn wire, rolled strip and stamped preforms; anneal between draws because Mn/Ni cause rapid work hardening.
What is the maximum service temperature of Ag149?
Ag149 is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
How much does Ag149 cost?
Ag149 is a high-cost precious metal ($$$$), 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
- EN ISO 17672 Brazing — Filler metals — ISO/CEN (2016)
- AWS A5.8/A5.8M Specification for Filler Metals for Brazing and Braze Welding (BAg-22) — AWS (2019)
- EN 1044 Brazing — Filler metals (AG 502) — CEN (1999)
- GB/T 10046 (BAg49ZnCuMnNi) — SAC (2018)
- ASM Handbook Vol. 6 — Welding, Brazing and Soldering — ASM International (1993)
- Silver brazing alloy datasheets (Lucas-Milhaupt, Umicore, Johnson Matthey, ) — various producers (2023)
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.