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F 837 Class A1-70 S20300

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F 837 Class A1-55 S20300 F738 Class A1-50 S20300
#203EZ(XM-1) #S20300

Description

USA SAE F 837M (2002), F 837 Class A1-70 S20300 Specialsteel Standard Specification for Stainless Steel Socket Head Cap Screws (Metric) and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: F 837 Class A1-70 S20300
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel F 837 Class A1-70 S20300 Austenite SAE USA Standard Specification for Stainless Steel Socket Head Cap Screws (Metric)

Chemical composition(mass fraction)(wt.%) of the F 837 Class A1-70 S20300

C Mn Si P S Cr Ni Mo Cu
≤0.08 5.00 -6.50 ≤1.00 ≤0.04 0.18 -0.35 16.00 -18.00 5.00 -6.00 ≤0.50 1.75 -2.25

Mechanical Properties of steel grade F 837 Class A1-70 S20300

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)
346 (≥) 499 (≥) 14 41 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 211

Physical Properties of steel grade F 837 Class A1-70 S20300

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
44 - -     0.44 -  
436 983 - 23.3 131   -  
466 - 12 23.2   341 141

Heat Treatment of steel grade F 837 Class A1-70 S20300

Heat treated : 1769°C - 1564°C

Technological Curves of steel grade F 837 Class A1-70 S20300

Cross Reference Table (Equivalent Grade) of F 837 Class A1-70 S20300

Grade Standard Country Application
S20300
S20300

Relevant standard of F 837 Class A1-70 S20300

F 837M (2002) Standard Specification for Stainless Steel Socket Head Cap Screws (Metric) F-837M-(2002).pdf
F 837 Class A1-55 S20300 F738 Class A1-50 S20300
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Jiangyou Longhai Special Steel Co.,Ltd.

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