304 Stainless Steels to SAE AMS-QQ-S-763B (1998)

304 - Specification & Application

  • SAE AMS-QQ-S-763B (1998) - Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings
  • SAE AMS-T-6845A (1999) - Tubing, Steel, Corrosion-Resistant (S30400), Aerospace Vehicle Hydraulic System 1/8 Hard Condition
  • SAE AMS-T-8506B (1999) - Tubing, Steel, Corrosion-Resistant, (304), Annealed, Seamless and Welded
  • SAE J 2515 (1999) - High temperature materials for exhaust manifolds
  • SAE J 405 (1998) - Chemical compositions of SAE wrought stainless steels
  • SAE J 467 (1968) - Special Purpose Alloys ("Superalloys")
  • SAE J 452 - Chemical compositions, mechanical and physical properties of SAE aluminum casting alloys

Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings

Chemical composition(wt.%) of 304 grade: to SAE AMS-QQ-S-763B (1998)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.08
Si - 1.00
Mn - 2.00
P - 0.045
S - 0.03
Cr 18.0 20.0
Ni 8.00 10.5
N - 0.10

304 - Detail

Steel, Corrosion Resistant, Bars, Wire, Shapes, and Forgings

Mechanical properties of grade 304 SAE AMS-QQ-S-763B (1998)

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)
848 (≥) 497 (≥) 14 22 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 332

Physical properties of grade 304 SAE AMS-QQ-S-763B (1998)

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
358 (≥) 839 (≥) 22 42 34 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
638 459 734
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