Precious Metal S800-H01
Supply condition
H01 = quarter hard
Use where a little extra stiffness is needed but bending and setting are still required.
Values for the H01 condition
Other S800 tempers and conditions
S800 is listed in 7 conditions; see the grade overview at S800.
Compare all 7 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
ODefault Annealed | Default stock condition for sheet, wire and tube that will be bent, drawn, stamped or hand-formed. | 110 | 310 | 35 | 66 HB | 60 % IACS |
As cast | Pick for cast jewelry bodies and decorative parts straight from the flask, before work-hardening. | 120 | 270 | 18 | 74 HB | 55 % IACS |
H01This page Quarter hard | Use where a little extra stiffness is needed but bending and setting are still required. | 260 | 380 | 18 | 90 HB | 58 % IACS |
Half hard | Common for chain wire, findings and ring shanks needing shape retention with some ductility left. | 350 | 450 | 10 | 109 HB | 57 % IACS |
Full hard | Choose for spring clips, pin stems and wear surfaces where forming is finished. | 460 | 540 | 4 | 137 HB | 56 % IACS |
Pre-hardened | Use when maximum hardness and dent resistance are wanted on cast or formed parts with complex shapes. | 470 | 560 | 6 | 160 HB | 68 % IACS |
Extra hard / spring | Drawn fine wire for springy earwires, coils and chain stock; no further bending margin. | 540 | 610 | 2 | 150 HB | 57 % IACS |
What is S800-H01?
S800-H01 is S800 supplied in the H01 condition — use where a little extra stiffness is needed but bending and setting are still required. S800-H01 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 380 MPa (55.1 ksi) — stronger than 87% of precious metal grades. Elongation at break is 18% and the elastic modulus is 80 GPa (11.6 Msi). S800-H01 has a density of 10.1 g/cm³ (0.365 lb/in³), lighter than 61% of precious metal grades. It melts at 779°C (1,434 °F). O is the default condition FabDigit quotes; H01 is available on request or by drawing note.
Advantages
- High strength — 260 MPa (37.7 ksi), better than 87% of precious metal grades
- Easy to machine — 55/100, better than 86% of precious metal grades
Limitations
- Limited service temperature — 150°C (302 °F), worse than 100% of precious metal grades
- Limited ductility — 18%, worse than 83% of precious metal grades
- Limited formability — 70/100, worse than 78% of precious metal grades
S800-H01 properties
Typical room-temperature values for S800-H01; 20 are specific to this condition. Other listed values are S800 reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
S800-H01 has a density of 10.1 g/cm³ (0.365 lb/in³), lighter than 61% of precious metal grades. It melts at 779°C (1,434 °F).
Mechanical14
S800-H01 has a yield strength of 260 MPa (37.7 ksi) and a tensile strength of 380 MPa (55.1 ksi) — stronger than 87% of precious metal grades. Elongation at break is 18% and the elastic modulus is 80 GPa (11.6 Msi).
Thermal6
S800-H01 is rated for continuous service to 150°C (302 °F). It conducts heat at 295 W/m·K (170.4 BTU/hr·ft·°F), better than 74% of precious metal grades. Thermal expansion is 19 µm/m·K (10.6 µin/in·°F).
Electrical3
S800-H01 conducts electricity at 58 % IACS, better than 72% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (68/100), worse than 74% of precious metal grades.
Sustainability4
Producing a kilogram of S800-H01 takes about 1,250 MJ of energy and emits 85 kg of CO₂ — less than 64% of precious metal grades. Typical recycled content is 45%.
Manufacturability8
S800-H01's machinability is good (55/100, better than 86% of precious metal grades); weldability good (55/100); formability very good (70/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with S800-H01
Is S800 easy to machine?
Very soft and gummy in the annealed state — use sharp polished carbide or HSS tools, high speed, light feed and oil mist; cold-worked or aged material cuts cleaner with better chip break.
Can S800 be welded?
Laser/PUK spot welding is standard; high thermal conductivity demands high peak power and matching 800 filler, and torch work risks copper firescale so use borax/boric flux or inert cover.
Can S800 be formed, bent or molded?
Excellent cold formability when annealed (bending, drawing, stamping, hydro-forming); anneal at 600–650 °C with quench every 40–50 % reduction to avoid cracking, and it investment-casts well at 950–1000 °C metal temperature.
What surface finishes work on S800?
Takes a mirror polish easily; pickle firescale in dilute sulfuric acid, then protect against tarnish with rhodium/silver plating, e-coat lacquer or anti-tarnish passivation — no anodizing.
S800 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 |
|---|---|---|
| Agfineness 800‰ minimum per GB/T 11887 marking rules | 80 – 81 | 80 |
| Znoptional deoxidizer / castability aid in commercial melts | 0 – 1 | 0.2 |
| Sioptional deoxidizer / anti-firescale addition | 0 – 0.05 | 0.02 |
| Cuprincipal alloying element (Ag-Cu hypoeutectic) | ≥ 18.5 (balance) | — |
S800-H01 — frequently asked
What is S800-H01 used for?
S800-H01 is typically used for fashion jewelry, decorative items and giftware, stamped pendants and earring findings, cast rings and clasps, ornamental chain and mesh and costume buckles and trim. In short: strongest of the silver finenesses; lowest-cost silver jewelry alloy; age-hardenable silver grade.
What is the yield strength of S800-H01?
S800-H01 has a typical yield strength of 260 MPa (37.7 ksi) and a tensile strength of 380 MPa (55.1 ksi) — stronger than 87% of precious metal grades. Strength varies by condition: see the 7 listed tempers.
Is S800-H01 easy to machine?
Reasonably — machinability is rated good (55/100, better than 86% of precious metal grades). Very soft and gummy in the annealed state — use sharp polished carbide or HSS tools, high speed, light feed and oil mist; cold-worked or aged material cuts cleaner with better chip break.
Can S800-H01 be welded?
Yes — weldability is rated good (55/100). Laser/PUK spot welding is standard; high thermal conductivity demands high peak power and matching 800 filler, and torch work risks copper firescale so use borax/boric flux or inert cover.
What surface finishes work on S800-H01?
Takes a mirror polish easily; pickle firescale in dilute sulfuric acid, then protect against tarnish with rhodium/silver plating, e-coat lacquer or anti-tarnish passivation — no anodizing.
Can S800-H01 be formed, bent or molded?
Excellent cold formability when annealed (bending, drawing, stamping, hydro-forming); anneal at 600–650 °C with quench every 40–50 % reduction to avoid cracking, and it investment-casts well at 950–1000 °C metal temperature.
What is the maximum service temperature of S800-H01?
S800-H01 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.
What is the difference between S800-O and S800-EH?
O is the default condition — default stock condition for sheet, wire and tube that will be bent, drawn, stamped or hand-formed. EH: drawn fine wire for springy earwires, coils and chain stock; no further bending margin. Yield strength is 110 MPa in O versus 540 MPa in EH.
Sources
- ASM Handbook Vol.2: Properties and Selection — Nonferrous Alloys and Special-Purpose Materials (precious metals section) — ASM International (1990)
- ASM Alloy Phase Diagrams — Ag-Cu binary system — ASM International (2016)
- The Santa Fe Symposium on Jewelry Manufacturing Technology proceedings (silver alloy metallurgy) — Met-Chem Research (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.