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SF-568 Class 8.8.3 F

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America ASME SF-568Class8.8.3F 碳及合金钢米制外螺纹紧固件的技术规范 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: SF-568Class8.8.3F / SF-568 Class 8.8.3 F
Category Grade Standard Region/Area Standard Content
Metals SF-568 Class 8.8.3 F ASME SF-568M America 碳及合金钢米制外螺纹紧固件的技术规范

Chemical composition(mass fraction)(wt.%) of the SF-568 Class 8.8.3 F

Element Min Max Similar
Si 0.1300 0.3700 -
S - 0.0450 -
P - 0.0450 -
Ni 0.1700 0.4300 -
Mn 0.8600 1.2400 -
Cu 0.1700 0.4300 -
Cr 0.4200 0.6800 -
C 0.1900 0.2600 -

Mechanical Properties of steel grade SF-568 Class 8.8.3 F

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)
685 (≥) 396 (≥) 11 42 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade SF-568 Class 8.8.3 F

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
31 - -     0.33 -  
621 631 - 14.3 333   -  
827 - 44 41.2   314 421

Heat Treatment of steel grade SF-568 Class 8.8.3 F

Heat treated : 1924°C - 1857°C

Technological Curves of steel grade SF-568 Class 8.8.3 F

Cross Reference Table (Equivalent Grade) of SF-568 Class 8.8.3 F

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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