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F68

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International ISO F68 Steel products for pressure purposes - Quality requirements - Part 1: Forgings and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: F68 / F68
Category Grade Standard Region/Area Standard Content
Metals F68 ISO 2604-1 International Steel products for pressure purposes - Quality requirements - Part 1: Forgings

Chemical composition(mass fraction)(wt.%) of the F68

Element Min Max Similar
Si - 1.0000 -
S - 0.0300 -
P - 0.0450 -
Ni 19.0000 23.0000 -
Mn - 2.0000 -
Cr 24.0000 26.0000 -
C - 0.0800 -
Si - 1.5000 -
S - 0.0300 -
P - 0.0450 -
Ni 19.0000 23.0000 -
Mn - 2.0000 -
Cr 24.0000 26.0000 -
C - 0.1500 -

Mechanical Properties of steel grade F68

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)
766 (≥) 275 (≥) 34 12 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade F68

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
11 - -     0.32 -  
582 645 - 32.3 312   -  
423 - 42 13.2   333 331

Heat Treatment of steel grade F68

Heat treated : 1858°C - 1475°C

Technological Curves of steel grade F68

Cross Reference Table (Equivalent Grade) of F68

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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