Precious Metal 800 Silver-H (Hardened)
Heat-treated state
EN Silber 800
Pick for knife handles, wear surfaces and stiff strip where no further forming is required.
Values for the H condition
Other 800 Silver tempers and conditions
800 Silver is listed in 7 conditions; see the grade overview at 800 Silver.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As cast | For cast holloware, figurines and jewellery bodies; coarse dendritic structure with lower strength and some porosity. | 115 | 250 | 15 | 68 HB | 76 % IACS |
AnnealedDefault soft, recrystallised (600–650 °C, quenched) | Default stock condition for sheet, wire and blanks that will be raised, spun, drawn or stamped. | 130 | 300 | 40 | 75 HB | 78 % IACS |
Quarter hard | Choose when moderate stiffness is needed but further bending or light forming still follows. | 250 | 350 | 20 | 100 HB | 77 % IACS |
Half hard | Standard temper for flatware blanks, hinges and parts needing dent resistance with some residual ductility. | 330 | 400 | 12 | 118 HB | 76.5 % IACS |
HThis page Hardened | Pick for knife handles, wear surfaces and stiff strip where no further forming is required. | 420 | 470 | 5 | 142 HB | 75 % IACS |
Spring hard | For springy clasps, pin stems and catches where elastic recovery matters most. | 480 | 520 | 3 | 155 HB | 75 % IACS |
Pre-hardened | Highest hardness/wear resistance from Cu-rich precipitation; used for cutlery blades, hinge pins and worn contact areas. | 510 | 580 | 4 | 175 HB | 85 % IACS |
What is 800 Silver-H?
800 Silver-H is 800 Silver heat treated to H — pick for knife handles, wear surfaces and stiff strip where no further forming is required. 800 Silver-H has a yield strength of 420 MPa (60.9 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 96% of precious metal grades. Elongation at break is 5% and the elastic modulus is 79 GPa (11.5 Msi). 800 Silver-H has a density of 10.15 g/cm³ (0.367 lb/in³), lighter than 59% of precious metal grades. It melts at 779°C (1,434 °F). Annealed is the default condition FabDigit quotes; H is available on request or by drawing note.
Advantages
- Easy to machine — 62/100, better than 99% of precious metal grades
- High strength — 420 MPa (60.9 ksi), better than 96% of precious metal grades
- Polishes to a fine finish — 95/100, better than 86% of precious metal grades
- Conducts heat well — 320 W/m·K (184.9 BTU/hr·ft·°F), better than 80% of precious metal grades
- High electrical conductivity — 75 % IACS, better than 77% of precious metal grades
Limitations
- Limited service temperature — 180°C (356 °F), worse than 100% of precious metal grades
- Limited ductility — 5%, worse than 93% of precious metal grades
- Limited formability — 35/100, worse than 92% of precious metal grades
- Needs corrosion protection — 60/100, worse than 88% of precious metal grades
- Low stiffness — 79 GPa (11.5 Msi), worse than 86% of precious metal grades
800 Silver-H properties
Typical room-temperature values for 800 Silver-H; 10 are specific to this condition. Other listed values are 800 Silver reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
800 Silver-H has a density of 10.15 g/cm³ (0.367 lb/in³), lighter than 59% of precious metal grades. It melts at 779°C (1,434 °F).
Mechanical12
800 Silver-H has a yield strength of 420 MPa (60.9 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 96% of precious metal grades. Elongation at break is 5% and the elastic modulus is 79 GPa (11.5 Msi).
Thermal6
800 Silver-H is rated for continuous service to 180°C (356 °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 18.9 µm/m·K (10.5 µin/in·°F).
Electrical3
800 Silver-H conducts electricity at 75 % IACS, better than 77% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (60/100), worse than 88% of precious metal grades.
Sustainability4
Producing a kilogram of 800 Silver-H takes about 1,200 MJ of energy and emits 90 kg of CO₂ — less than 66% of precious metal grades. Typical recycled content is 50%.
Manufacturability8
800 Silver-H's machinability is good (62/100, better than 99% of precious metal grades); weldability very good (70/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 800 Silver-H
Is 800 Silver easy to machine?
Cuts cleanly with sharp, high-rake carbide or HSS tools and light oil mist; gummy and prone to smearing in the annealed state, so machine in half-hard or age-hardened condition for best finish.
Can 800 Silver be welded?
Excellent for laser and micro-TIG welding and for silver brazing; avoid overheating in reducing flames to limit hydrogen embrittlement, and use borax/boric flux to control copper oxidation.
Can 800 Silver be formed, bent or molded?
Very ductile when annealed — deep drawing, spinning, raising and stamping are routine; interanneal at 600–650 °C with quench roughly every 50 % reduction to avoid cracking.
What surface finishes work on 800 Silver?
Takes a mirror polish easily; depletion-gild or flash-plate with fine silver or rhodium to hide fire-scale and slow sulfide tarnishing, and store with anti-tarnish paper or lacquer.
800 Silver 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 |
|---|---|---|
| Aghallmark fineness 800/1000, negative tolerance not permitted under EN ISO 9202 | 80 – 81 | 80 |
| Znoptional deoxidiser/colour modifier in some continental mill alloys | 0 – 1.5 | 0 |
| Sioccasional anti-firescale/deoxidiser micro-addition | 0 – 0.05 | 0 |
| Cu≈19–20 % nominal | balance | — |
800 Silver-H — frequently asked
What is 800 Silver-H used for?
800 Silver-H is typically used for european tableware, religious objects, jewelry and decorative silverware. In short: hardest common silver fineness; low-cost European standard; strong spinning and drawing alloy.
What is the yield strength of 800 Silver-H?
800 Silver-H has a typical yield strength of 420 MPa (60.9 ksi) and a tensile strength of 470 MPa (68.2 ksi) — stronger than 96% of precious metal grades. Strength varies by condition: see the 7 listed tempers.
Is 800 Silver-H easy to machine?
Reasonably — machinability is rated good (62/100, better than 99% of precious metal grades). Cuts cleanly with sharp, high-rake carbide or HSS tools and light oil mist; gummy and prone to smearing in the annealed state, so machine in half-hard or age-hardened condition for best finish.
Can 800 Silver-H be welded?
Yes — weldability is rated very good (70/100). Excellent for laser and micro-TIG welding and for silver brazing; avoid overheating in reducing flames to limit hydrogen embrittlement, and use borax/boric flux to control copper oxidation.
What surface finishes work on 800 Silver-H?
Takes a mirror polish easily; depletion-gild or flash-plate with fine silver or rhodium to hide fire-scale and slow sulfide tarnishing, and store with anti-tarnish paper or lacquer.
Can 800 Silver-H be formed, bent or molded?
Very ductile when annealed — deep drawing, spinning, raising and stamping are routine; interanneal at 600–650 °C with quench roughly every 50 % reduction to avoid cracking.
What is the maximum service temperature of 800 Silver-H?
800 Silver-H is rated for continuous use to about 180°C (356 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 800 Silver Annealed and 800 Silver-PH?
Annealed is the default condition — default stock condition for sheet, wire and blanks that will be raised, spun, drawn or stamped. PH: highest hardness/wear resistance from Cu-rich precipitation; used for cutlery blades, hinge pins and worn contact areas. Yield strength is 130 MPa in Annealed versus 510 MPa in PH.
Sources
- EN ISO 9202 — Jewellery: fineness of precious metal alloys — ISO/CEN (2019)
- Gesetz über den Feingehalt der Gold- und Silberwaren (German hallmarking law, 800 fineness) — Bundesgesetzblatt
- ASM Handbook Vol.2 — Properties and Selection: Nonferrous Alloys (Silver and Silver Alloys) — ASM International (1990)
- ASM Handbook Vol.3 — Alloy Phase Diagrams (Ag-Cu system) — ASM International (1992)
- Jewellery master-alloy and mill-product data for Ag-Cu 800/925 sheet and wire — Legor / Umicore (2023)
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.