Precious Metal 835 Silver-H04
Supply condition
EN Silber 835
H04 = full hard
Use for knife handles, blade backs and wear surfaces where no further forming is needed.
Values for the H04 condition
Other 835 Silver tempers and conditions
835 Silver is listed in 6 conditions; see the grade overview at 835 Silver.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
As fabricated | Condition of cast handles, ornaments and holloware feet straight from the mould before work hardening. | 105 | 265 | 20 | 62 HB | 77 % IACS |
AnnealedDefault 600–650 °C anneal, quenched or air cooled | Standard stocking condition for sheet, strip and wire that will be raised, spun, drawn or chased. | 110 | 300 | 40 | 57 HB | 80 % IACS |
Quarter hard | Pick when parts still need moderate bending but must resist handling dents. | 275 | 380 | 16 | 90 HB | 78 % IACS |
Half hard | Usual delivery condition for cutlery blanks, spoon/fork stock and flat holloware parts. | 375 | 450 | 8 | 110 HB | 77 % IACS |
H04This page Full hard | Use for knife handles, blade backs and wear surfaces where no further forming is needed. | 460 | 520 | 4 | 133 HB | 77 % IACS |
Spring hard | For clips, catches and springy tension elements in silverware and jewellery findings. | 505 | 560 | 2 | 147 HB | 76 % IACS |
What is 835 Silver-H04?
835 Silver-H04 is 835 Silver supplied in the H04 condition — use for knife handles, blade backs and wear surfaces where no further forming is needed. 835 Silver-H04 has a yield strength of 460 MPa (66.7 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 97% of precious metal grades. Elongation at break is 4% and the elastic modulus is 80 GPa (11.6 Msi). 835 Silver-H04 has a density of 10.2 g/cm³ (0.368 lb/in³), lighter than 57% of precious metal grades. It melts at 779°C (1,434 °F). Annealed is the default condition FabDigit quotes; H04 is available on request or by drawing note.
Advantages
- Easy to machine — 62/100, better than 99% of precious metal grades
- High strength — 460 MPa (66.7 ksi), better than 97% 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 — 77 % IACS, better than 78% of precious metal grades
Limitations
- Limited ductility — 4%, worse than 93% of precious metal grades
- Limited formability — 35/100, worse than 92% of precious metal grades
- Limited service temperature — 200°C (392 °F), worse than 89% of precious metal grades
- Needs corrosion protection — 65/100, worse than 77% of precious metal grades
835 Silver-H04 properties
Typical room-temperature values for 835 Silver-H04; 10 are specific to this condition. Other listed values are 835 Silver reference data and may not represent this condition. Bars are the position among precious metal grades.
Physical3
835 Silver-H04 has a density of 10.2 g/cm³ (0.368 lb/in³), lighter than 57% of precious metal grades. It melts at 779°C (1,434 °F).
Mechanical11
835 Silver-H04 has a yield strength of 460 MPa (66.7 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 97% of precious metal grades. Elongation at break is 4% and the elastic modulus is 80 GPa (11.6 Msi).
Thermal6
835 Silver-H04 is rated for continuous service to 200°C (392 °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 19 µm/m·K (10.6 µin/in·°F).
Electrical3
835 Silver-H04 conducts electricity at 77 % IACS, better than 78% of precious metal grades.
Chemical & Environmental3
Corrosion resistance is good (65/100), worse than 77% of precious metal grades.
Sustainability4
Producing a kilogram of 835 Silver-H04 takes about 1,300 MJ of energy and emits 105 kg of CO₂ — less than 61% of precious metal grades. Typical recycled content is 50%.
Manufacturability8
835 Silver-H04's machinability is good (62/100, better than 99% of precious metal grades); weldability good (60/100); formability fair (35/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 835 Silver-H04
Is 835 Silver easy to machine?
Machines like a soft gummy copper alloy — use sharp polished high-rake carbide or HSS tools, high speed, light feed and generous lubrication; collect all swarf as refinable scrap.
Can 835 Silver be welded?
Laser or pulse-arc (PUK) welding works well with matching filler; torch brazing with cadmium-free Ag solders is standard, but avoid overheating to limit copper firescale.
Can 835 Silver be formed, bent or molded?
Excellent in the annealed state for raising, spinning, deep drawing and stamping; interanneal at 600–650 °C every 50–60 % reduction and pickle to remove oxide.
What surface finishes work on 835 Silver?
Polishes to a bright mirror; protect with rhodium or fine-silver plating and anti-tarnish lacquer, or deliberately oxidise for contrast — anodizing is not applicable.
835 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 |
|---|---|---|
| Aglegal minimum fineness 835/1000; producers aim slightly above | 83.5 – 84.5 | 83.5 |
| Znoptional deoxidiser/flow aid in some casting grades | 0 – 1 | 0 |
| Other (Si, Ge, Sn traces)occasional firescale-resistant modifications | 0 – 0.5 | 0 |
| Cuprincipal hardener | ≥ 15 (balance) | — |
835 Silver-H04 — frequently asked
What is 835 Silver-H04 used for?
835 Silver-H04 is typically used for cutlery, tableware and decorative items. In short: mid-fineness German standard; softer than 800 Silver; good stamping and spinning alloy.
What is the yield strength of 835 Silver-H04?
835 Silver-H04 has a typical yield strength of 460 MPa (66.7 ksi) and a tensile strength of 520 MPa (75.4 ksi) — stronger than 97% of precious metal grades. Strength varies by condition: see the 6 listed tempers.
Is 835 Silver-H04 easy to machine?
Reasonably — machinability is rated good (62/100, better than 99% of precious metal grades). Machines like a soft gummy copper alloy — use sharp polished high-rake carbide or HSS tools, high speed, light feed and generous lubrication; collect all swarf as refinable scrap.
Can 835 Silver-H04 be welded?
Yes — weldability is rated good (60/100). Laser or pulse-arc (PUK) welding works well with matching filler; torch brazing with cadmium-free Ag solders is standard, but avoid overheating to limit copper firescale.
What surface finishes work on 835 Silver-H04?
Polishes to a bright mirror; protect with rhodium or fine-silver plating and anti-tarnish lacquer, or deliberately oxidise for contrast — anodizing is not applicable.
Can 835 Silver-H04 be formed, bent or molded?
Excellent in the annealed state for raising, spinning, deep drawing and stamping; interanneal at 600–650 °C every 50–60 % reduction and pickle to remove oxide.
What is the maximum service temperature of 835 Silver-H04?
835 Silver-H04 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.
What is the difference between 835 Silver Annealed and 835 Silver Spring?
Annealed is the default condition — standard stocking condition for sheet, strip and wire that will be raised, spun, drawn or chased. Spring: for clips, catches and springy tension elements in silverware and jewellery findings. Yield strength is 110 MPa in Annealed versus 505 MPa in Spring.
Sources
- Gesetz über den Feingehalt der Gold- und Silberwaren (German fineness law, 835/1000 mark) — Bundesrepublik Deutschland
- EN ISO 9202 — Jewellery, fineness of precious metal alloys — CEN/ISO (2019)
- ASM Handbook Vol. 2 — Properties and Selection: Nonferrous Alloys (precious metals section) — ASM International (1990)
- ASM Handbook Vol. 3 — Alloy Phase Diagrams (Ag-Cu system) — ASM International (1992)
- Silver-copper jewellery alloy sheet/wire temper data — Precious-metal semi-finished product suppliers (Heimerle+Meule / C.Hafner class) (2023)
- (silver spot quotations) (2026)
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.