A 778 S31703 Stainless Steels to A 778 (2009)

A 778 S31703 - Specification & Application

  • A 778 (2009) - Welded, Unannealed Austenitic Stainless Steel Tubular Products

Welded, Unannealed Austenitic Stainless Steel Tubular Products

Chemical composition(wt.%) of A 778 S31703 grade: to A 778 (2009)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.03
Mn - 2.00
Si - 1.00
P - 0.045
S - 0.03
Cr 18.00 20.00
Ni 11.00 15.00
Mo 3.00 4.00
N - 0.10

A 778 S31703 - Detail

Welded, Unannealed Austenitic Stainless Steel Tubular Products

Mechanical properties of grade A 778 S31703 A 778 (2009)

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)
858 (≥) 619 (≥) 23 23 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 123

Physical properties of grade A 778 S31703 A 778 (2009)

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
542 (≥) 441 (≥) 43 11 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 342
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
575 739 634

Equivalent Products

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