SA-299 Grade B Stainless Steels to SA-299/SA-299M

SA-299 Grade B - Specification & Application

  • SA-299/SA-299M - Pressure Vessel Plates, Carbon Steel, Manganese-Silicon

Pressure Vessel Plates, Carbon Steel, Manganese-Silicon

Chemical composition(wt.%) of SA-299 Grade B grade: to SA-299/SA-299M

Elements Min.(≥) Max.(≤) Similar Remarks
C 0.08 0.15
Si - 0.75
Mn 1.00 2.00
P - -
S - 0.03
Ni 8.50 10.50
Cr 27.00 31.00
Al - -
Cu - 0.50
Ti - -
Fe - -
N - -
Mo - 0.50

SA-299 Grade B - Detail

Pressure Vessel Plates, Carbon Steel, Manganese-Silicon

Mechanical properties of grade SA-299 Grade B SA-299/SA-299M

Proof strength
Rp0.2 (MPa)
Tensile strength
Rm (MPa)
Impact energy
KV (J)
Elongation at fracture
A (%)
Reduction in cross section on fracture
Z (%)
As-Heat-Treated Condition Brinell hardness (HBW)
668 (≥) 758 (≥) 12 11 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 434

Physical properties of grade SA-299 Grade B SA-299/SA-299M

Property Density
kg/dm3
Temperature T
°C/F
Specific heat
J / kgK
Thermal conductivity
W/mK
Electric resistance
µΩ·cm
Modulus of elasticity
kN/mm2
Expansion rate
641 (≥) 325 (≥) 21 31 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 444
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
687 337 218

Equivalent Products

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