A 778 Grade TP 304L Stainless Steels to A 778 (2009)

A 778 Grade TP 304L - 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 Grade TP 304L grade: to A 778 (2009)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.030
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 17.50 19.50
Ni 8.00 12.0
N - 0.10

A 778 Grade TP 304L - Detail

Welded, Unannealed Austenitic Stainless Steel Tubular Products

Mechanical properties of grade A 778 Grade TP 304L 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)
945 (≥) 549 (≥) 13 43 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical properties of grade A 778 Grade TP 304L 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
146 (≥) 448 (≥) 24 34 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 114
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
958 153 621
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