18-8 Type 304 Stainless Steels to MIL-S-5059D

18-8 Type 304 - Specification & Application

  • MIL-S-5059D - Steel, corrosion resistant (18-8) plate, sheet and strip

Steel, corrosion resistant (18-8) plate, sheet and strip

Chemical composition(wt.%) of 18-8 Type 304 grade: to MIL-S-5059D

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

18-8 Type 304 - Detail

MIL-S-5059D Steel, corrosion resistant (18-8) plate, sheet and strip; Replaced by: SAE AMS 5513; SAE AMS 5910; SAE AMS 5911; SAE AMS 5912; SAE AMS 5913, SAE AMS 5524; SAE AMS 5516; SAE AMS 5517; SAE AMS 5518; SAE AMS 5519; SAE AMS 5901; SAE AMS 5902; SAE AMS 5903; SAE AMS 5904; SAE AMS 5905; SAE AMS 5906; SAE AMS 5907

Replaced by SAE-AMS5513, SAE-AMS5910-5913, SAE-AMS5524, SAE-AMS5516-5519, SAE-AMS5901-5907

Mechanical properties of grade 18-8 Type 304 MIL-S-5059D

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)
261 (≥) 864 (≥) 14 21 33 Solution and Aging, Annealing, Ausaging, Q+T,etc 242

Physical properties of grade 18-8 Type 304 MIL-S-5059D

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
397 (≥) 515 (≥) 23 44 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 141
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
515 314 411
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