GERMAN SILVER Russian patent published in 2009 - IPC C22C9/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to non-ferrous metallurgy and can be used for manufacturing of fine mechanics details, telephone apparatus, products of decorative purpose. For increasing of alloy durability it contains, wt %: nickel 36.0-38.0; zinc 26.0-30.0; boron 0.003-0.007; zirconium 0.1-0.2; vanadium 0.1-0.2; aluminium 0.5-0.9; manganese 0.5-0.9; silicon 0.1-0.2; antimony 0.001-0.002; copper - the rest. Ultimate stress limit of alloy at tension is approximately 75 kg/mm².

EFFECT: alloy hardening.

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