AGCLBR
Grade
AGCLBR = agCl–AgBr
Choose when transmission must be extended past 20 µm or when drawing flexible CO2/thermal-imaging IR fibres.
Values for the AGCLBR condition
Other AgCl tempers and conditions
AgCl is listed in 3 conditions; see the grade overview at AgCl.
Compare all 3 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
AGCLBRThis page AgCl–AgBr | Choose when transmission must be extended past 20 µm or when drawing flexible CO2/thermal-imaging IR fibres. | — | 25 | 25 | 12 HV | 1 W/m·K |
SCDefault Single-crystal optical grade | Choose for the highest transmission and lowest scatter IR windows, ATR prisms and lenses over 0.4–28 µm. | — | 26 | 20 | 10 HV | 1 W/m·K |
Polycrystalline hot-pressed / extruded sheet and rod | Choose for cheap thick gaskets, cold-flow seals, ATR blanks and large-area windows where slight scatter is acceptable. | — | 32 | 15 | 13 HV | 1 W/m·K |
What is AGCLBR?
AGCLBR is AgCl in the AGCLBR grade — choose when transmission must be extended past 20 µm or when drawing flexible CO2/thermal-imaging IR fibres. AGCLBR has a tensile strength of 25 MPa (3.63 ksi), weaker than 87% of glass grades. Elongation at break is 25% and the elastic modulus is 18 GPa (2.61 Msi). AGCLBR has a density of 6.4 g/cm³ (0.231 lb/in³), heavier than 98% of glass grades. It melts at 420°C (788 °F). SC is the default condition FabDigit quotes; AGCLBR is available on request or by drawing note.
Advantages
- Ductile — tolerates forming and impact — 25%, better than 100% of glass grades
Limitations
- Heavy — 6.4 g/cm³ (0.231 lb/in³), worse than 98% of glass grades
- Hard to polish — 40/100, worse than 97% of glass grades
- Low stiffness — 18 GPa (2.61 Msi), worse than 95% of glass grades
- Limited service temperature — 150°C (302 °F), worse than 92% of glass grades
- High embodied carbon — 80 kg CO₂/kg, worse than 92% of glass grades
AGCLBR properties
Typical room-temperature values for AGCLBR; 17 are specific to this condition. Other listed values are AgCl reference data and may not represent this condition. Bars are the position among glass grades.
Physical5
AGCLBR has a density of 6.4 g/cm³ (0.231 lb/in³), heavier than 98% of glass grades. It melts at 420°C (788 °F).
Mechanical13
AGCLBR has a tensile strength of 25 MPa (3.63 ksi), weaker than 87% of glass grades. Elongation at break is 25% and the elastic modulus is 18 GPa (2.61 Msi).
Thermal5
AGCLBR is rated for continuous service to 150°C (302 °F). It conducts heat at 1.1 W/m·K (0.636 BTU/hr·ft·°F), worse than 68% of glass grades. Thermal expansion is 30 µm/m·K (16.7 µin/in·°F).
Electrical3
AGCLBR has an electrical resistivity of 1×10⁸ Ω·m.
Chemical & Environmental2
Corrosion resistance is very good (72/100), worse than 53% of glass grades.
Sustainability4
Producing a kilogram of AGCLBR takes about 1,200 MJ of energy and emits 80 kg of CO₂ — more than 92% of glass grades. Typical recycled content is 40%.
Manufacturability2
AGCLBR's machinability is poor (28/100, better than 66% of glass grades).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with AGCLBR
Is AgCl easy to machine?
Extremely soft and gummy — single-point diamond turning with light cuts, or shear/punch cold; avoid abrasive grinding which smears and embeds silver.
Can AgCl be welded?
Not welded; parts are cold-pressed, extruded or diffusion-bonded silver-halide to silver-halide at 150–250 °C.
Can AgCl be formed, bent or molded?
Fully ductile: can be cold rolled, extruded into sheet, rod and fibre, and coined into gaskets or ATR prism shapes without cracking.
What surface finishes work on AgCl?
Diamond-turn or lightly polish with soft cloth and dilute thiosulfate-free slurry; store in the dark and handle with gloves — light exposure and contact with Al/Cu darkens the surface; AR coatings must be low-temperature deposited.
AgCl 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 |
|---|---|---|
| Agstoichiometric silver | 75 – 75.5 | 75.26 |
| Clstoichiometric chlorine | ≥ 24.5 (balance) | — |
AGCLBR — frequently asked
What is AGCLBR used for?
AGCLBR is typically used for IR windows, IR fiber optics and electrochemical reference electrodes. In short: ductile IR crystal; non-hygroscopic KBr alternative; light-sensitive, store dark.
What is the tensile strength of AGCLBR?
AGCLBR has a typical tensile strength of 25 MPa (3.63 ksi) — weaker than 87% of glass grades. Strength varies by condition: see the 3 listed tempers.
Is AGCLBR easy to machine?
Not especially — machinability is rated poor (28/100, better than 66% of glass grades). Extremely soft and gummy — single-point diamond turning with light cuts, or shear/punch cold; avoid abrasive grinding which smears and embeds silver.
Can AGCLBR be welded?
Not welded; parts are cold-pressed, extruded or diffusion-bonded silver-halide to silver-halide at 150–250 °C.
What surface finishes work on AGCLBR?
Diamond-turn or lightly polish with soft cloth and dilute thiosulfate-free slurry; store in the dark and handle with gloves — light exposure and contact with Al/Cu darkens the surface; AR coatings must be low-temperature deposited.
Can AGCLBR be formed, bent or molded?
Fully ductile: can be cold rolled, extruded into sheet, rod and fibre, and coined into gaskets or ATR prism shapes without cracking.
What is the maximum service temperature of AGCLBR?
AGCLBR is rated for continuous use to about 150°C (302 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
Sources
- CRC Handbook of Chemistry and Physics — silver chloride physical data — CRC Press (2022)
- Handbook of Optical Constants of Solids — Academic Press (1998)
- Silver Chloride (AgCl) IR optical material data — Crystran Ltd (2023)
- IR crystal materials comparison tables — ISP Optics / LightPath (2022)
- Infrared fibre and silver-halide crystal property data — SPIE / journal literature (2019)
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.