NiCr28FeSiCe 2.4889 BS-EN-10095-1999
Heat resisting nickel alloys
Designation
Name：NiCr28FeSiCe
Number：2.4889
NiCr28FeSiCe 2.4889 Chemical composition
C：0.05～0.12
Mn(max):max.1.00
Si（max）：2.50~3.00
P(max):0.020
S(max):0.010
Ni：min 45.00
Cr:26.00～29.00
Co: (A maximum of 1,5% Co is allowed andcounted as nickel.Reporting of cobalt is not required.)
Fe:21.00~25.00
Cu:.max.0.30
Ce：0.03~0.09
NiCr28FeSiCe 2.4889 Mechanical properties at room temperature
Form: flat products
Thickness a or diameter(d:mm): a ≤50
Form: bars
Thickness a or diameter(d:mm): d ≤160
HB max.:220
Proof strength: Rp0,2N/mm² (min):240
Tensile strength （Rm N/mm²）:620～820
A % min
Long product: 35
Flat products:（1）0,5≤a<3：（1，tr）：35 （2）3≤ a 1：35 |tr: 35
Heat treatment
Symbol: +AT(AT = solution annealed)
Temperature(℃):1150～1200
Type of cooling: water, air, cooling sufficiently rapid
Maximum application temperature Ta for air
Ta max(℃):1200
Creep properties
Estimated average value of the strength for 1 % elongation at elevated temperature (Strength in N/mm2)
Elongation 1 % in 1 0000 h:
700℃:25
800℃:11.9
900℃:5.9
1000℃：3.1
Elongation 1 % in 100 000 h:
700℃:16
800℃:7.2
900℃:3.5
1000℃：1.9
Estimated average value of the strength for rupture at elevated temperature
(Strength in N/mm2)
Rupture in 10 000 h:
700℃:40
800℃:19
900℃:9.5
1000℃:5.9
Rupture in 100 000 h:
700℃:28
800℃:13
900℃:5.9
1000℃：3
Physical properties for the steels and nickel alloys
Density(kg/dm2):8.0
Linear expansion coefficient (10⁻⁶K⁻¹): between 20℃ and
200℃:14.5
400℃:15.4
600℃:16.2
800℃:17.0
1000℃:17.8
Thermal conductivity
W/(m.K)
at 20℃: 13
at 500℃：21
Specific heat capacity
kJ(kg.k)
at 20℃：0.50
Electrical resistivity
Ω.mm²/m
at 20℃：1.18
Magnetizability：Paramagnetic