Precious Metal 86.5Ag-13.5CdO
ASTM B268
86.5Ag-13.5CdO is the low-oxide end of the ASTM B268 silver–cadmium oxide range, trading some arc erosion resistance for 80% IACS conductivity and 320 W/m·K thermal conductivity.
Reference datasheet — 86.5Ag-13.5CdO 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 O condition
86.5Ag-13.5CdO tempers and conditions
86.5Ag-13.5CdO is supplied in 6 conditions, soft to hard. O is the default FabDigit quotes; the values on this page are for it.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Pick for riveted or deep-formed contacts and for parts that must be bent or upset after blanking. | 110 | 230 | 20 | 57 HB | 80 % IACS |
Powder-metallurgy pressed, sintered and repressed | Pick for thick or large contacts where internal oxidation cannot reach the core, or for near-net-shape tips. | 120 | 210 | 8 | 61 HB | 76 % IACS |
Internally oxidised | Pick for the finest, most uniform CdO dispersion and the best arc-erosion life in AC contactor duty. | 150 | 250 | 12 | 66 HB | 82 % IACS |
Quarter hard | Pick when blanked contacts need better flatness and burr control but still some bending capacity. | 175 | 265 | 10 | 71 HB | 79 % IACS |
Half hard | Middle-ground temper for stamped contact buttons and bridges needing moderate stiffness. | 220 | 295 | 6 | 80 HB | 78 % IACS |
Full hard | Pick for maximum hardness and wear resistance on flat stamped contacts where no post-forming is required. | 280 | 330 | 3 | 95 HB | 77 % IACS |
What is 86.5Ag-13.5CdO?
86.5Ag-13.5CdO is the low-oxide end of the ASTM B268 silver–cadmium oxide range, trading some arc erosion resistance for 80% IACS conductivity and 320 W/m·K thermal conductivity. It suits switching devices needing both low contact resistance and arc endurance, and is supplied internally oxidised (IO) or as P/M billet, strip and wire in O through H04 tempers at 110 MPa yield, 230 MPa tensile and 57 HB. Service temperature is 300 °C, the bulk material is not fusion welded, and cadmium content brings handling and regulatory constraints; 85Ag-15CdO or 80Ag-20CdO give more arc resistance, Ag-Ni grades avoid cadmium. 86.5Ag-13.5CdO has a density of 10.1 g/cm³ (0.365 lb/in³), lighter than 61% of precious metal grades. It melts at 960°C (1,760 °F). 86.5Ag-13.5CdO has a yield strength of 110 MPa (16 ksi) and a tensile strength of 230 MPa (33.4 ksi) — weaker than 80% of precious metal grades. Elongation at break is 20% and the elastic modulus is 82 GPa (11.9 Msi).
What is 86.5Ag-13.5CdO used for?
- appliance switches
- control relays
- circuit breakers
Advantages
- High electrical conductivity — 80 % IACS, better than 83% of precious metal grades
- Conducts heat well — 320 W/m·K (184.9 BTU/hr·ft·°F), better than 80% of precious metal grades
Limitations
- Hard to polish — 60/100, worse than 92% of precious metal grades
- Low strength — 110 MPa (16 ksi), worse than 80% of precious metal grades
- Limited ductility — 20%, worse than 77% of precious metal grades
86.5Ag-13.5CdO properties
Typical room-temperature values for 86.5Ag-13.5CdO-O; bars are the position among precious metal grades.
Physical3
86.5Ag-13.5CdO has a density of 10.1 g/cm³ (0.365 lb/in³), lighter than 61% of precious metal grades. It melts at 960°C (1,760 °F).
Mechanical11
86.5Ag-13.5CdO has a yield strength of 110 MPa (16 ksi) and a tensile strength of 230 MPa (33.4 ksi) — weaker than 80% of precious metal grades. Elongation at break is 20% and the elastic modulus is 82 GPa (11.9 Msi).
Thermal6
86.5Ag-13.5CdO is rated for continuous service to 300°C (572 °F). It conducts heat at 320 W/m·K (184.9 BTU/hr·ft·°F), better than 80% of precious metal grades. Thermal expansion is 18.5 µm/m·K (10.3 µin/in·°F).
Electrical3
86.5Ag-13.5CdO conducts electricity at 80 % IACS, better than 83% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is very good (82/100), better than 53% of precious metal grades.
Sustainability4
Producing a kilogram of 86.5Ag-13.5CdO takes about 1,450 MJ of energy and emits 105 kg of CO₂ — less than 54% of precious metal grades. Typical recycled content is 45%.
Manufacturability8
86.5Ag-13.5CdO's machinability is fair (45/100, better than 59% of precious metal grades); weldability very good (70/100); formability very good (80/100).
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. 86.5Ag-13.5CdO is highlighted; hover a dot for its name, or open the interactive family chart.
Working with 86.5Ag-13.5CdO
Is 86.5Ag-13.5CdO easy to machine?
Turns and blanks easily but is gummy — use sharp, high-rake tools, light feeds and generous coolant; capture all swarf for silver recovery and control cadmium-bearing dust.
Can 86.5Ag-13.5CdO be welded?
Not fusion welded; contact tips are resistance- or brazed-welded to Cu/brass carriers through a pure-silver backing layer, since the CdO face will not wet.
Can 86.5Ag-13.5CdO be formed, bent or molded?
Supplied as internally oxidised strip/wire or P/M billet; soft temper cold-heads, rivets and stamps well, while full-hard stock should be blanked flat only.
86.5Ag-13.5CdO 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 |
|---|---|---|
| CdOcadmium oxide dispersoid, formed by internal oxidation of Ag-Cd or blended as powder | 12.5 – 14.5 | 13.5 |
| Cdmetallic Cd equivalent of the CdO content | ≈ 11.8 | 11.8 |
| Ocombined as CdO | ≈ 1.7 | 1.7 |
| impurities (total)Cu, Fe, Pb, Bi etc. per ASTM B692 | ≤ 0.15 | |
| Agbalance, 86.5 wt% nominal | balance |
What surface finishes work on 86.5Ag-13.5CdO?
Normally used bare with a lightly brushed or coined face; avoid plating over the working surface, and store in sulphur-free packaging to limit tarnish.
Equivalent designations
Standards and trade names that resolve to Precious Metal 86.5Ag-13.5CdO in FabDigit's catalog. Equivalence is nominal — check the exact specification when certification matters.
- ASTM
- B268
- Also called
- AgCdO13.5
How much does 86.5Ag-13.5CdO cost?
86.5Ag-13.5CdO 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.
86.5Ag-13.5CdO — frequently asked
What is 86.5Ag-13.5CdO used for?
86.5Ag-13.5CdO is typically used for appliance switches, control relays and circuit breakers. In short: highest conductivity Ag-CdO; lowest oxide loading offered; 300 °C service limit.
What is the yield strength of 86.5Ag-13.5CdO?
86.5Ag-13.5CdO has a typical yield strength of 110 MPa (16 ksi) and a tensile strength of 230 MPa (33.4 ksi) — weaker than 80% of precious metal grades. Strength varies by condition: see the 6 listed tempers.
Is 86.5Ag-13.5CdO easy to machine?
Reasonably — machinability is rated fair (45/100, better than 59% of precious metal grades). Turns and blanks easily but is gummy — use sharp, high-rake tools, light feeds and generous coolant; capture all swarf for silver recovery and control cadmium-bearing dust.
Can 86.5Ag-13.5CdO be welded?
Yes — weldability is rated very good (70/100). Not fusion welded; contact tips are resistance- or brazed-welded to Cu/brass carriers through a pure-silver backing layer, since the CdO face will not wet.
What surface finishes work on 86.5Ag-13.5CdO?
Normally used bare with a lightly brushed or coined face; avoid plating over the working surface, and store in sulphur-free packaging to limit tarnish.
Can 86.5Ag-13.5CdO be formed, bent or molded?
Supplied as internally oxidised strip/wire or P/M billet; soft temper cold-heads, rivets and stamps well, while full-hard stock should be blanked flat only.
What is the maximum service temperature of 86.5Ag-13.5CdO?
86.5Ag-13.5CdO is rated for continuous use to about 300°C (572 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 86.5Ag-13.5CdO-O and 86.5Ag-13.5CdO-H04?
O is the default condition — pick for riveted or deep-formed contacts and for parts that must be bent or upset after blanking. H04: pick for maximum hardness and wear resistance on flat stamped contacts where no post-forming is required. Yield strength is 110 MPa in O versus 280 MPa in H04.
How much does 86.5Ag-13.5CdO cost?
86.5Ag-13.5CdO 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
- ASTM B692 — Standard Specification for Silver-Cadmium Oxide Electrical Contact Material — ASTM International (2018)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys and Special-Purpose Materials (electrical contact materials) — ASM International (1990)
- Silver–metal oxide contact material datasheets (AgCdO 10/12/15 series) — electrical contact material producers (2022)
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.