B 774 307-323 Stainless Steels to B 774 (2010)

B 774 307-323 - Specification & Application

  • B 774 (2010) - Low Melting Point Alloys

Low Melting Point Alloys

Chemical composition(wt.%) of B 774 307-323 grade: to B 774 (2010)

Elements Min.(≥) Max.(≤) Similar Remarks
C - 0.15
Si - 1.00
Mn 3.75 4.75
P - 0.045
S - 0.03
Ni 9.00 10.50
Cr 19.00 22.00
Al - -
Cu - -
Ti - -
Fe - -
N - -
Mo - -
V - -

B 774 307-323 - Detail

Low Melting Point Alloys

Mechanical properties of grade B 774 307-323 B 774 (2010)

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)
888 (≥) 914 (≥) 43 34 34 Solution and Aging, Annealing, Ausaging, Q+T,etc 423

Physical properties of grade B 774 307-323 B 774 (2010)

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
413 (≥) 925 (≥) 13 41 23 Solution and Aging, Annealing, Ausaging, Q+T,etc 414
Temp.
°C/°F
Creep strain limit
(10000h)
(Rp1,0) N/mm2
Creep rupture strength
(10000h)
(Rp1,0) N/mm2
174 294 955
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