Precious Metal Ag145 AS-BRAZED
Heat-treated state
EN L-Ag45Sn · GB BAg45CuZnSn
Property set for the finished joint rather than the filler wire — use for joint strength sizing.
Values for the AS-BRAZED condition
Other Ag145 tempers and conditions
Ag145 is listed in 2 conditions; see the grade overview at Ag145.
- AS-BRAZED
- ANN
Compare all 2 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AS-BRAZEDThis page As-brazed joint (steel lap joint) | Property set for the finished joint rather than the filler wire — use for joint strength sizing. | 200 | 350 | 25 | 90 HB | 20 % IACS |
Annealed | Choose when the filler must be bent, coiled tightly or formed into shapes at the bench. | 220 | 400 | 30 | 85 HB | 21 % IACS |
What is Ag145 AS-BRAZED?
Ag145 AS-BRAZED is Ag145 heat treated to AS-BRAZED — property set for the finished joint rather than the filler wire — use for joint strength sizing. Ag145 AS-BRAZED has a yield strength of 200 MPa (29 ksi) and a tensile strength of 350 MPa (50.8 ksi) — stronger than 51% of precious metal grades. Elongation at break is 25% and the elastic modulus is 85 GPa (12.3 Msi). Ag145 AS-BRAZED has a density of 9.1 g/cm³ (0.329 lb/in³), lighter than 89% of precious metal grades. It melts at 640°C (1,184 °F).
Advantages
- Lightweight — 9.1 g/cm³ (0.329 lb/in³), better than 89% of precious metal grades
- Low embodied carbon — 52 kg CO₂/kg, better than 89% of precious metal grades
Limitations
- Difficult to weld — 15/100, worse than 96% of precious metal grades
- 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
Ag145 AS-BRAZED properties
Typical room-temperature values for Ag145 AS-BRAZED; 17 are specific to this condition. Other listed values are Ag145 reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
Ag145 AS-BRAZED has a density of 9.1 g/cm³ (0.329 lb/in³), lighter than 89% of precious metal grades. It melts at 640°C (1,184 °F).
Mechanical10
Ag145 AS-BRAZED has a yield strength of 200 MPa (29 ksi) and a tensile strength of 350 MPa (50.8 ksi) — stronger than 51% of precious metal grades. Elongation at break is 25% and the elastic modulus is 85 GPa (12.3 Msi).
Thermal6
Ag145 AS-BRAZED is rated for continuous service to 200°C (392 °F). It conducts heat at 100 W/m·K (57.8 BTU/hr·ft·°F), better than 55% of precious metal grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
Ag145 AS-BRAZED 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 Ag145 AS-BRAZED takes about 710 MJ of energy and emits 52 kg of CO₂ — less than 88% of precious metal grades. Typical recycled content is 35%.
Manufacturability7
Ag145 AS-BRAZED's machinability is fair (40/100, worse than 60% of precious metal grades); weldability poor (15/100); formability very good (70/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with Ag145 AS-BRAZED
Is Ag145 easy to machine?
Soft and gummy — turned or slit only for preform production; use sharp tools and light feeds, though the alloy is normally supplied ready-formed.
Can Ag145 be welded?
Not welded; it is applied by torch, induction, furnace (with flux or in controlled atmosphere) or resistance brazing at 670–690 °C with fast heating to limit zinc loss.
Can Ag145 be formed, bent or molded?
Readily drawn to fine wire, rolled to 0.05 mm strip and blanked into rings; interanneal at about 550–600 °C when heavy cold work is applied.
What surface finishes work on Ag145?
Remove corrosive flux residues with hot water or 10 % citric/sulphuric pickle immediately after brazing; the light-coloured fillet can be wire-brushed or polished and takes electroplating.
Ag145 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 defines the grade | 44 – 46 | 45 |
| Cu | 26 – 28 | 27 |
| Sncadmium replacement, lowers melting range | 2.5 – 3.5 | 2.5 |
| Cdcadmium-free grade, RoHS/REACH limit | ≤ 0.01 | — |
| Pb | ≤ 0.03 | — |
| other impurities (total)per EN ISO 17672 impurity limits | ≤ 0.15 | — |
| Zn | balance | — |
Ag145 AS-BRAZED — frequently asked
What is Ag145 AS-BRAZED used for?
Ag145 AS-BRAZED is typically used for HVAC and refrigeration copper tube joints, plumbing fittings, electrical contact brazing and general steel/copper fabrication brazing. In short: cadmium-free BAg-1 substitute; lowest brazing temperature here; highest-strength deposit in family.
What is the yield strength of Ag145 AS-BRAZED?
Ag145 AS-BRAZED has a typical yield strength of 200 MPa (29 ksi) and a tensile strength of 350 MPa (50.8 ksi) — stronger than 51% of precious metal grades. Strength varies by condition: see the 2 listed tempers.
Is Ag145 AS-BRAZED easy to machine?
Not especially — machinability is rated fair (40/100, worse than 60% of precious metal grades). Soft and gummy — turned or slit only for preform production; use sharp tools and light feeds, though the alloy is normally supplied ready-formed.
Can Ag145 AS-BRAZED be welded?
Not readily — weldability is rated poor (15/100). Not welded; it is applied by torch, induction, furnace (with flux or in controlled atmosphere) or resistance brazing at 670–690 °C with fast heating to limit zinc loss.
What surface finishes work on Ag145 AS-BRAZED?
Remove corrosive flux residues with hot water or 10 % citric/sulphuric pickle immediately after brazing; the light-coloured fillet can be wire-brushed or polished and takes electroplating.
Can Ag145 AS-BRAZED be formed, bent or molded?
Readily drawn to fine wire, rolled to 0.05 mm strip and blanked into rings; interanneal at about 550–600 °C when heavy cold work is applied.
What is the maximum service temperature of Ag145 AS-BRAZED?
Ag145 AS-BRAZED 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
- EN ISO 17672 Brazing — Filler metals (Ag145) — ISO/CEN (2016)
- AWS A5.8/A5.8M Specification for Filler Metals for Brazing and Braze Welding — AWS (2019)
- ASM Handbook Vol.6 — Welding, Brazing and Soldering — ASM International (1993)
- Silver brazing alloy (45 % Ag cadmium-free) technical data — Johnson Matthey / Umicore / Lucas-Milhaupt (2023)
- GB/T 10046 — SAC (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.