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300M

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SA-216 Grade WCC A 646 Grade 300M
#300M

Description

USA UNS SAE J 467 (1968), 300M Specialsteel Special Purpose Alloys ("Superalloys") and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: 300M
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel 300M Precipitation-Hardening UNS USA Special Purpose Alloys ("Superalloys")

Chemical composition(mass fraction)(wt.%) of the 300M

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo V
≤0.40 ≤1.60 ≤0.75 ≤ ≥ ≤ ≥ ≤0.40 ≤1.85 ≤ ≥ ≤ ≥ ≤ ≥ ≤remaining ≤ ≥ ≤ ≥ ≤0.08

Mechanical Properties of steel grade 300M

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)
929 (≥) 395 (≥) 13 14 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 342

Physical Properties of steel grade 300M

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
43 - -     0.43 -  
595 794 - 34.3 141   -  
183 - 12 13.2   334 341

Heat Treatment of steel grade 300M

Heat treated : 1512°C - 1331°C

Technological Curves of steel grade 300M

Cross Reference Table (Equivalent Grade) of 300M

Grade Standard Country Application
300M

Relevant standard of 300M

SAE J 467 (1968) Special Purpose Alloys ("Superalloys") SAE-J-467-(1968).pdf
SA-216 Grade WCC A 646 Grade 300M
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