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F568 Class 4.8

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America ASTM F568Class4.8 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: F568Class4.8 / F568 Class 4.8
Category Grade Standard Region/Area Standard Content
Metals F568 Class 4.8 ASTM F568M 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 F568 Class 4.8

Element Min Max Similar
S - 0.0580 -
P - 0.0480 -
C - 0.5500 -

Mechanical Properties of steel grade F568 Class 4.8

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)
788 (≥) 977 (≥) 43 14 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 231

Physical Properties of steel grade F568 Class 4.8

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
33 - -     0.23 -  
946 541 - 44.3 121   -  
716 - 41 11.2   344 224

Heat Treatment of steel grade F568 Class 4.8

Heat treated : 1494°C - 1926°C

Technological Curves of steel grade F568 Class 4.8

Cross Reference Table (Equivalent Grade) of F568 Class 4.8

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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