Hoover and Strong will be closed June 29 - July 10 for an extended July 4th holiday break. Orders can still be placed online but they will not be processed until we re-open on Monday, July 13th, at that day's market rate. Have a very happy and safe 4th of July!
Logo
06.26.2020 Metal Prices
Gold1,747.60
Silver17.74
Platinum799.00
Palladium1,847.00
Iridium1,640.00
Ruthenium270.00
Learn more


TruSilver Data Sheet

Tarnish-Resistant TruSilver®

TruSilver® is a 92.5% sterling silver available in casting grain, sheet and wire products. In tarnish-resistance lab tests, TruSilver® outperformed both 935 Argentium Original and Sterling Silver. But there’s more! TruSilver® costs the same as Sterling and up to 20% less than 935 Argentium Original. TruSilver® is the true winner every time!

Click here for the TruSilver® Material Safety Data Sheet (MSDS)

TruSilver® (TS) - white alloy - 0.925 Sterling silver, copper, others

TruSilver® is a 92.5% sterling silver alloy which has tarnish resistant properties 4–5 times that of traditional Sterling silver. It has been formulated to perform to the highest standards for all jewelry applications and can be cast, formed and fabricated just like traditional sterling silver. When investment cast, TruSilver® is fire scale resistant and has a tarnish resistance 4-5 times better than traditional Sterling. TruSilver® compliments Hoover & Strong’s new Palladium Sterling alloy. TruSilver® can be hallmarked as Sterling silver.

TruSilver® offers the following benefits over traditional sterling silver:

  • Superior surface finish due to tighter grain structure
  • TruSilver® work hardens at a higher rate that traditional sterling silver
  • Reduced polishing time resulting from a smoother as-cast surface with no fire scale
  • Environmentally friendly - eliminates the need to strip with cyanides or acids
  • Reduced porosity due to higher fluidity during casting
  • Reduced scrap due to the elimination of fire scale during casting
  • Metal recyclability is 50% or higher
  • Good solderability
  • Elimination of black finger syndrome. A certain percentage of the population has a skin chemistry that reacts with traditional sterling silver. This reaction often results in a blackening of the inside of the ring and finger. Using TruSilver® for your jewelry significantly reduces this problem.

Recommended Uses: TruSilver® is suited for all general fabrication techniques. It has improved tarnish resistance.

PRODUCT FORMS AVAILABLE:
Casting grain Quick Order - same day shipping
Sheet Quick Order - 8-30 gauge, 3rd day shipping
Round Wire Quick Order - 8-30 gauge, 3rd day shipping
Patterned Wire Quick Order - 3rd day shipping
Shape Wire Quick Order - 3rd day shipping
High volume orders typically ship in five days depending on inventory. Other product forms can be made to order. Minimums may apply and may have associated manufacturing charges
PROPERTIES:
Melting Range 1562° - 1610°F (850°-875°C)  
Specific Gravity 10.20  
Density 5.46 Troy ozs/in³  
Hardness 75HV as cast
70HV annealed
125HV as heat treated
160HV hard rolled
 
Elongation 40% +  
PROCESSING RECOMMENDATIONS:
Working For best results, H&S recommends TruSilver® is reduced by a minimum of 50% section thickness/area between anneals.
Annealing If using a furnace, anneal between 950 and 1100ºF (510 - 595ºC) for 10 – 30 minutes, depending on size. If using a torch, heat to dull red. This alloy may be quenched into a suitable medium after annealing.
Age Hardening To solution treat, heat to 1250ºF (677ºC) for 10-30 minutes, depending on size, then water quench. Follow this with either 400ºF (204ºC) for 3 - 4 hours, or 650ºF (343ºC) for 2 hours then air cool.
Investment Casting TruSilver® can be cast using standard gypsum bonded investments. A 50% new metal mix is preferred. Recommended casting temperature: 1796 - 1850ºF (980 - 1010ºC) Recommended flask temperature: 900 - 1250ºF (485 - 640ºC) Temperatures may differ from these recommendations depending on processing considerations.
Soldering Standard soldering techniques may be used with TruSilver®. The use of H&S silver solders is recommended.
Pickling Sodium Bisulfate (Sparex) or heated 10%Nitric 90%Water
Finishing Treat as standard sterling silver
SPECIAL NOTES:

TruSilver® does not contain germanium. We have found issues with germanium as a versatile element for both casting and mill products, the biggest issue being reusability. The inclusion of germanium in tarnish resistant silver alloys also significantly increases the cost.

If using a torch with TruSilver for annealing or balling, the type of flame to use is important. There are three types of flame:

  1. Neutral flame, which is equally mixed gas and oxygen
  2. Oxidizing flame, which contains more oxygen than gas
  3. Reducing flame , which contains more gas than oxygen

The third "reducing flame" produces the best results when torch annealing or balling.

After torch annealing, immerse the work piece for a few seconds in pickle to remove any copper oxide blackening.

For balling, dip the work piece in an acid, rinse and then dip in a flux of methyl alcohol and boric acid. This procedure results in perfect balling with no blackening.   

Like most tarnish resistant silver alloys, Trusilver does not respond well to tacking operations.

Click here for the TruSilver® Material Safety Data Sheet (MSDS)


Page updated on