SA-268 S44600-2 Stainless Steels to SA-268/SA-268M

SA-268 S44600-2 - Specification & Application

  • SA-268/SA-268M - Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Chemical composition(wt.%) of SA-268 S44600-2 grade: to SA-268/SA-268M

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.02
Mn - 1.50
Si - 1.00
P - 0.04
S - 0.03
Cr 23.00 27.00
Ni - 0.50
Mo - -
N - 0.25

SA-268 S44600-2 - Detail

Specification for Seamless and Welded Ferritic and Martensitic Stainless Steel Tubing for General Service

Mechanical properties of grade SA-268 S44600-2 SA-268/SA-268M

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)
873 (≥) 618 (≥) 43 21 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 444

Physical properties of grade SA-268 S44600-2 SA-268/SA-268M

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
375 (≥) 781 (≥) 33 42 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 234
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
172 428 379
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