303Se Stainless Steels to SAE AMS 5640

303Se - Specification & Application

  • SAE AMS 5640 - Stainless and heat resisting steels
  • SAE AMS 7538 - Stainless and heat resisting steels

Stainless and heat resisting steels

Chemical composition(wt.%) of 303Se grade: to SAE AMS 5640

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 -

303Se - Detail

303Se

Mechanical properties of grade 303Se SAE AMS 5640

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)
468 (≥) 262 (≥) 11 13 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 124

Physical properties of grade 303Se SAE AMS 5640

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
546 (≥) 152 (≥) 21 32 43 Solution and Aging, Annealing, Ausaging, Q+T,etc 112
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
637 449 516

Equivalent Products

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