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Grade 21 Easy Yellow Gold

India IS Grade21EasyYellowGold Gold Solders for Use in Manufacture of Jewellery - Specification and Mechanical Properties, Chemical Element, Cross Reference.

Category Grade Standard Region/Area Standard Content
Metals Grade 21 Easy Yellow Gold IS 3095 India Gold Solders for Use in Manufacture of Jewellery - Specification

Chemical composition(mass fraction)(wt.%) of the Grade 21 Easy Yellow Gold

Element Min Max Similar
Zn - - 4.8000
In - - 2.2000
Cu - - 5.5000
Au - - 87.5000

Mechanical Properties of steel grade Grade 21 Easy Yellow Gold

Yield
Rp0.2 (MPa)
Tensile
Rm (MPa)
Impact
KV/Ku (J)
Elongation
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
613 (≥) 763 (≥) 42 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 221

Physical Properties of steel grade Grade 21 Easy Yellow Gold

Temperature
(°C)
Modulus of elasticity
(GPa)
Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and Thermal conductivity
(W/m·°C)
Specific thermal capacity
(J/kg·°C)
Specific electrical resistivity
(Ω mm²/m)
Density
(kg/dm³)
Poisson’s coefficient, ν
21 - -     0.44 -  
286 814 - 31.3 333   -  
131 - 41 44.2   431 221

Heat Treatment of steel grade Grade 21 Easy Yellow Gold

Heat treated : 1649°C - 1244°C

Technological Curves of steel grade Grade 21 Easy Yellow Gold

Cross Reference Table (Equivalent Grade) of Grade 21 Easy Yellow Gold

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