STS321HTP Stainless Steels to D 3576 (2011)

STS321HTP - Specification & Application

  • D 3576 (2011) - Stainless steel pipes
  • D 9536 (2011) - Stainless lined steel pipe

Stainless lined steel pipe

Chemical composition(wt.%) of STS321HTP grade: to D 3576 (2011)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.030
Cr 17.00 19.00
Ni 9.00 13.00
Mo - -
N - -
Ti 5×C% -

STS321HTP - Detail

Stainless lined steel pipe

Mechanical properties of grade STS321HTP D 3576 (2011)

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)
357 (≥) 833 (≥) 12 14 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical properties of grade STS321HTP D 3576 (2011)

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
766 (≥) 923 (≥) 13 32 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
979 142 449

Equivalent Products

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