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SA-268 S44627

Description

USA AMS SA-268/SA-268M, SA-268 S44627 Specialsteel Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SA-268 S44627
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-268 S44627 Ferrite AMS USA Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Chemical composition(mass fraction)(wt.%) of the SA-268 S44627

C Mn Si P S Cr Ni Mo N Nb Cu
≤0.01 ≤0.40 ≤0.40 ≤0.02 ≤0.02 25.00 -27.00 ≤0.50 0.75 -1.50 ≤0.015 0.05 -0.20 ≤0.20

Mechanical Properties of steel grade SA-268 S44627

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)
998 (≥) 294 (≥) 14 41 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 311

Physical Properties of steel grade SA-268 S44627

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
32 - -     0.42 -  
882 955 - 24.3 423   -  
733 - 22 44.2   324 134

Heat Treatment of steel grade SA-268 S44627

Heat treated : 1371°C - 1439°C

Technological Curves of steel grade SA-268 S44627

Cross Reference Table (Equivalent Grade) of SA-268 S44627

Relevant standard of SA-268 S44627

SA-268/SA-268M Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service SA-268-SA-268M.pdf

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