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SA-268 S44800

Description

USA AMS SA-268/SA-268M, SA-268 S44800 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 S44800
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-268 S44800 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 S44800

C Mn Si P S Cr Ni Mo N Cu
≤0.01 ≤0.30 ≤0.20 ≤0.025 ≤0.02 28.00 -30.00 2.00 -2.50 3.50 -4.20 ≤0.02 ≤0.15

Mechanical Properties of steel grade SA-268 S44800

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)
756 (≥) 212 (≥) 22 41 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 442

Physical Properties of steel grade SA-268 S44800

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
33 - -     0.24 -  
949 572 - 42.3 341   -  
188 - 43 41.2   433 442

Heat Treatment of steel grade SA-268 S44800

Heat treated : 1889°C - 1797°C

Technological Curves of steel grade SA-268 S44800

Cross Reference Table (Equivalent Grade) of SA-268 S44800

Grade Standard Country Application
S44800
S44800
S44800
S44800
29-4-2(S44800)

Relevant standard of SA-268 S44800

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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