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Bulgaria BDS 65 Spring steels. Designations and technical requirements and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: 65 / 65
Category Grade Standard Region/Area Standard Content
Metals 65 BDS 6742 Bulgaria Spring steels. Designations and technical requirements

Chemical composition(mass fraction)(wt.%) of the 65

Element Min Max Similar
Si 0.1700 0.3700 -
S - 0.0350 -
P - 0.0350 -
Ni - 0.3000 -
Mn 0.5000 0.8000 -
Cu - 0.3000 -
Cr - 0.2500 -
C 0.6200 0.7000 -

Mechanical Properties of steel grade 65

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)
348 (≥) 965 (≥) 22 22 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 411

Physical Properties of steel grade 65

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
23 - -     0.14 -  
213 134 - 42.3 113   -  
211 - 34 33.2   132 411

Heat Treatment of steel grade 65

Heat treated : 1831°C - 1579°C

Technological Curves of steel grade 65

Cross Reference Table (Equivalent Grade) of 65

Grade Standard Country Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1
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