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A 688 S31254

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A 479 S31254 A 813 S31254
#254SMO #S31254

Description

USA SAE A 688/A 688M (2012), A 688 S31254 Specialsteel Welded Austenitic Stainless Steel Feedwater Heater Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: A 688 S31254
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel A 688 S31254 Austenite SAE USA Welded Austenitic Stainless Steel Feedwater Heater Tubes

Chemical composition(mass fraction)(wt.%) of the A 688 S31254

C Mn Si P S Cr Ni Mo Cu N
≤0.02 ≤1.00 ≤0.80 ≤0.03 ≤0.01 19.50 -20.50 17.50 -18.50 6.00 -6.50 0.50 -1.00 0.18 -0.22

Mechanical Properties of steel grade A 688 S31254

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)
476 (≥) 541 (≥) 34 13 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 343

Physical Properties of steel grade A 688 S31254

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
21 - -     0.42 -  
645 972 - 14.3 232   -  
844 - 13 34.2   424 432

Heat Treatment of steel grade A 688 S31254

Heat treated : 1757°C - 1128°C

Technological Curves of steel grade A 688 S31254

Cross Reference Table (Equivalent Grade) of A 688 S31254

Grade Standard Country Application
254SMO
254SMO(S31254)
S31254
S31254
S31254
S31254
S31254
S31254
S31254
S31254

Relevant standard of A 688 S31254

A 688/A 688M (2012) Welded Austenitic Stainless Steel Feedwater Heater Tubes A-688-A-688M-(2012).pdf
A 479 S31254 A 813 S31254
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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