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F738 Class A1-70 S30403

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F738 Class A1-50 S30403 F738 Class A1-80 S30403
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Description

USA SAE F 738M (2002) , F738 Class A1-70 S30403 Specialsteel Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: F738 Class A1-70 S30403
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel F738 Class A1-70 S30403 Austenite SAE USA Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs

Chemical composition(mass fraction)(wt.%) of the F738 Class A1-70 S30403

C Si Mn P S Cr Ni
≤0.03 ≤1.00 ≤2.00 ≤0.045 ≤0.03 18.0 -20.0 8.00 -12.0

Mechanical Properties of steel grade F738 Class A1-70 S30403

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)
159 (≥) 745 (≥) 23 11 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 414

Physical Properties of steel grade F738 Class A1-70 S30403

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 - -     0.41 -  
251 222 - 33.3 113   -  
534 - 33 43.2   234 442

Heat Treatment of steel grade F738 Class A1-70 S30403

Heat treated : 1392°C - 1477°C

Technological Curves of steel grade F738 Class A1-70 S30403

Cross Reference Table (Equivalent Grade) of F738 Class A1-70 S30403

Grade Standard Country Application
S30403
S30403
S30403
S30403
S30403
S30403
S30403
S30403
S30403

Relevant standard of F738 Class A1-70 S30403

F 738M (2002) Standard Specification for Stainless Steel Metric Bolts, Screws, and Studs F-738M--(2002)-.pdf
F738 Class A1-50 S30403 F738 Class A1-80 S30403
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