A 511 MT303Se Stainless Steels to ASTM A 511

A 511 MT303Se - Specification & Application

  • ASTM A 511 - Seamless austenitic stainless steel mechanical tubing

Austenitic stainless steel forgings for general use

Chemical composition(wt.%) of A 511 MT303Se grade: to ASTM A 511

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 1.00
Mn - 2.00
P - 0.2
S - 0.06
Cr 17.0 19.0
Ni 8.00 10.0
Se 0.15 -

A 511 MT303Se - Detail

A 511 MT303Se

Mechanical properties of grade A 511 MT303Se ASTM A 511

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)
465 (≥) 475 (≥) 42 34 22 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical properties of grade A 511 MT303Se ASTM A 511

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
274 (≥) 193 (≥) 33 43 11 Solution and Aging, Annealing, Ausaging, Q+T,etc 431
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
276 611 147

Equivalent Products

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