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SA-688 TP 304N

Description

USA AMS SA-688/SA-688M , SA-688 TP 304N Specialsteel Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SA-688 TP 304N
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-688 TP 304N Austenite AMS USA Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes

Chemical composition(mass fraction)(wt.%) of the SA-688 TP 304N

C Si Mn P S Cr Ni N
≤0.08 ≤0.75 ≤2.00 ≤0.045 ≤0.03 18.0 -20.0 8.00 -10.5 0.10 -0.16

Mechanical Properties of steel grade SA-688 TP 304N

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)
927 (≥) 395 (≥) 24 34 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 223

Physical Properties of steel grade SA-688 TP 304N

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
41 - -     0.33 -  
222 633 - 42.3 121   -  
762 - 11 21.2   441 431

Heat Treatment of steel grade SA-688 TP 304N

Heat treated : 1397°C - 1987°C

Technological Curves of steel grade SA-688 TP 304N

Cross Reference Table (Equivalent Grade) of SA-688 TP 304N

Relevant standard of SA-688 TP 304N

SA-688/SA-688M Specification for Welded Austenitic Stainless Steel Feedwater Heater Tubes SA-688-SA-688M-.pdf

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