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ZlSr 750-250

Russia GOST ZlSr750-250 Noble metals based alloys for jewellery. Marks and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: ZlSr750-250 / ZlSr 750-250
Category Grade Standard Region/Area Standard Content
Metals ZlSr 750-250 GOST 30649 Russia Noble metals based alloys for jewellery. Marks

Chemical composition(mass fraction)(wt.%) of the ZlSr 750-250

Element Min Max Similar

Mechanical Properties of steel grade ZlSr 750-250

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)
733 (≥) 772 (≥) 23 42 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade ZlSr 750-250

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
44 - -     0.11 -  
522 313 - 23.3 412   -  
476 - 34 14.2   122 131

Heat Treatment of steel grade ZlSr 750-250

Heat treated : 1459°C - 1917°C

Technological Curves of steel grade ZlSr 750-250

Cross Reference Table (Equivalent Grade) of ZlSr 750-250

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