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SA-803 29-4

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SA-731 29-4-2 SA-803 29-4-2
#29-4

Description

USA AMS SA-803/SA-803M, SA-803 29-4 Specialsteel Specification for Welded Ferritic Stainless Steel Feedwater Heater Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: SA-803 29-4
Category Class Grade Type Standard Country Application
Steel GradesSpecialsteel SA-803 29-4 Precipitation-Hardening AMS USA Specification for Welded Ferritic Stainless Steel Feedwater Heater Tubes

Chemical composition(mass fraction)(wt.%) of the SA-803 29-4

C Si Mn P S Ni Cr Al Cu Ti Fe N Mo
≤0.01 ≤0.20 ≤0.30 ≤ ≥ ≤ ≥ ≤0.15 28.00 -30.00 ≤ ≥ ≤0.15 ≤ ≥ ≤ ≥ ≤0.02 3.50 -4.20

Mechanical Properties of steel grade SA-803 29-4

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)
869 (≥) 364 (≥) 41 31 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade SA-803 29-4

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
42 - -     0.22 -  
339 982 - 24.3 242   -  
723 - 43 33.2   431 444

Heat Treatment of steel grade SA-803 29-4

Heat treated : 1473°C - 1241°C

Technological Curves of steel grade SA-803 29-4

Cross Reference Table (Equivalent Grade) of SA-803 29-4

Grade Standard Country Application
29-4
29-4C
29-4-2
29-4
29-4-2
29-4C
29-4
29-4-2
29-4
29-4-2
29-4C(S44735)
29-4-2(S44800)
X2CrMoTi29-4
X2CrMoTi29-4

Relevant standard of SA-803 29-4

SA-803/SA-803M Specification for Welded Ferritic Stainless Steel Feedwater Heater Tubes SA-803-SA-803M.pdf
SA-731 29-4-2 SA-803 29-4-2
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