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A 803 Grade 29-4

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A 791 Grade 29-4C A 803 Grade 29-4-2
#29-4

Description

USA SAE A 803/A 803M (2012), A 803 Grade 29-4 Specialsteel Welded Ferritic Stainless Steel Feedwater Heater Tubes and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

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

Chemical composition(mass fraction)(wt.%) of the A 803 Grade 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 A 803 Grade 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)
992 (≥) 511 (≥) 44 32 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical Properties of steel grade A 803 Grade 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
31 - -     0.23 -  
497 178 - 13.3 343   -  
782 - 43 34.2   331 333

Heat Treatment of steel grade A 803 Grade 29-4

Heat treated : 1116°C - 1561°C

Technological Curves of steel grade A 803 Grade 29-4

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

A 803/A 803M (2012) Welded Ferritic Stainless Steel Feedwater Heater Tubes A-803-A-803M-(2012).pdf
A 791 Grade 29-4C A 803 Grade 29-4-2
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