X6NiCrNbCe32-27 1.4877 BS-EN-10095-1999
Austenitic heat-resisting steels
Steel designation
Name：X6NiCrNbCe32-27
Number：1.4877
X6NiCrNbCe32-27 1.4877 Chemical composition
C：0.04～0.08
Si: max.0.30
Mn(max): 1.00
P(max): 0.020
S(max): 0.010
Cr: 26.00～28.00
Ni: 31.00～33.00
N：0.11
Al：max.0.025
Ce: 0.05～0.10
Nb: 0.60～1.00
X6NiCrNbCe32-27 1.4877 Mechanical properties at room temperature
Form: bars
Thickness a or diameter(d:mm): a ≤160
HB max.:223
Proof strength: Rp0,2N/mm² (min):180
Rp1,0N/mm²(min):220
Tensile strength （Rm N/mm²）:500～750
A % min
Long product:35
Heat treatment
Symbol: +AT (A T=solution annealed)
Temperature(℃):1050～1150
Type of cooling: water, air, cooling sufficiently rapid
Maximum application temperature Ta for air
Ta max(℃):1150
(The loss of metal caused by scaling does not exceed 1 g/m2⋅h at Ta, and does not exceed 2 g/m2 at Ta + 50 ℃ on average for a period of 120 h with four intermediate coolings.)
Creep properties
Estimated average value of the strength for rupture at elevated temperature
(Strength in N/mm²)
Rupture in 10 000 h:
600℃:175
700℃:80
800℃:24
900℃:10
1000℃:3.5
Rupture in 100 000 h:
600℃:140
700℃:52
800℃:16
900℃:5
1000℃:1.5
Physical properties for the steels and nickel alloys
Density(kg/dm2):8.0
Linear expansion coefficient (10⁻⁶K⁻¹): between 20℃ and
200℃:15.5
400℃:16.5
600℃:16.5
800℃:17.7
1000℃:18.4
Thermal conductivity
W/(m.K)
at 20℃: 12
at 500℃：20
Specific heat capacity
kJ(kg.k)
at 20℃：0.45
Electrical resistivity
Ω.mm²/m
at 20℃：0.96
Magnetizability：no (slightly magnetic when cold worked)