X2CrNiMnMoNNb21-16-5-3 Stainless Steels to WL 1.3964-1 (2008)

X2CrNiMnMoNNb21-16-5-3 - Specification & Application

  • WL 1.3964-1 (2008) - Non-magnetizable austenitic cast steel —G-X2CrNiMnMoNNb 21-16-5-3 Part 4: Castings
  • WL 1.3964-2 (2004) - Non-magnetizable austenitic steel X2CrNiMnMoNNb 21-16-5-3 Part 2: Bars and sections
  • WL 1.3964-3 (2003) - Non-magnetizable austenitic steel X2CrNiMnMoNNb 21-16-5-3 Part 3: Forgings
  • WL 1.3964-6 (2008) - Non-magnetizable austenitic steel X2CrNiMnMoNNb 21-16-5-3 Part 6: Seamless rolled rings

Non-magnetizable austenitic cast steel —G-X2CrNiMnMoNNb 21-16-5-3 Part 4: Castings

Chemical composition(wt.%) of X2CrNiMnMoNNb21-16-5-3 grade: to WL 1.3964-1 (2008)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.030
Si - 1.00
Mn 4.00 6.00
P - 0.025
S - 0.010
Cr 20.00 21.50
Ni 15.00 17.00
Mo 3.00 3.50
Nb - 0.25
N 0.200 0.35

X2CrNiMnMoNNb21-16-5-3 - Detail

Non-magnetizable austenitic cast steel —G-X2CrNiMnMoNNb 21-16-5-3 Part 4: Castings

Mechanical properties of grade X2CrNiMnMoNNb21-16-5-3 WL 1.3964-1 (2008)

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)
979 (≥) 686 (≥) 32 21 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical properties of grade X2CrNiMnMoNNb21-16-5-3 WL 1.3964-1 (2008)

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
378 (≥) 524 (≥) 12 14 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 311
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
598 494 325
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