X6NiCrSiNCe35-25 1.4854 BS-EN-10095-1999
Austenitic heat-resisting steels
Steel designation
Name：X6NiCrSiNCe35-25
Number：1.4854
X6NiCrSiNCe35-25 1.4854 Chemical composition
C：0.04～0.08
Si: 1.20～2.00
Mn(max):max.2.00
P(max):0.040
S(max):0.015
Cr:24.00～26.00
Ni:34.00～36.00
N:.0.12～0.20
Ce: 0.03～0.08
X6NiCrSiNCe35-25 1.4854 Mechanical properties at room temperature
Form: rods and sections
Thickness a or diameter(d:mm): d ≤25
HB max.:210
Proof strength: Rp0,2N/mm² (min):300
Rp1,0N/mm²(min):340
Tensile strength （Rm N/mm²）:650～850
A % min
Long product:40
Flat products:（1）0,5≤a<3：（1，tr）：40 （2）3 < a （1|tr）: 40
Heat treatment
Symbol: +AT (A T=solution annealed)
Temperature(℃):1100～1150
Type of cooling: water, air, cooling sufficiently rapid
Maximum application temperature Ta for air
Ta max(℃):1170
Creep properties
Estimated average value of the strength for 1 % elongation at elevated temperature (Strength in N/mm2)
Elongation 1 % in 1 000 h:
600℃:150
700℃:60
800℃:26
900℃:12.5
1000℃:6.5
Elongation 1 % in 10 000 h:
600℃:88
700℃:34
800℃:15
900℃:8
1000℃:4.5
Elongation 1 % in 10 0000 h:
600℃:52
700℃:21
800℃:9.7
900℃:5.1
1000℃:3.0
Estimated average value of the strength for rupture at elevated temperature
(Strength in N/mm2)
Rupture in 1 000 h:
600℃:200
700℃:84
800℃:41
900℃:22
1000℃:12
Rupture in 10 000 h:
600℃:127
700℃:56
800℃:28
900℃:15
1000℃:8
Rupture in 100 000 h:
600℃:80
700℃:36
800℃:18
900℃:9.2
1000℃:4.8
Physical properties for the steels and nickel alloys
Density(kg/dm2):7.9
Linear expansion coefficient (10⁻⁶K⁻¹): between 20℃ and
200℃:15.5
400℃:16.5
600℃:17.0
800℃:17.5
1000℃:18.0
Thermal conductivity
W/(m.K)
at 20℃: 11
at 500℃：18.5
Specific heat capacity
kJ(kg.k)
at 20℃：0.45
Electrical resistivity
Ω.mm²/m
at 20℃：1.0
Magnetizability：no (slightly magnetic when cold worked)