X10CrAlSi7 1.4713 BS-EN-10095-1999
Ferritic heat resisting steels
Steel designation
Name：X10CrAlSi7
Number：1.4713
X10CrAlSi7 Chemical composition
C:max.0.12
Si:0.50～1.00
Mn(max):1.00
P(max):0.04
S(max):0.015
Cr:6.00～8.00
Al:0.50～1.00
X10CrAlSi7 Mechanical properties at room temperature
Form: flat products
Thickness a or diameter(d:mm): a ≤ 12
HB max.:192
Proof strength: Rp0,2N/mm2(min):220
Tensile strength :Rm N/mm2:420～620
A % min:
Long product:20
Flat products:(3 < a )： 1 :20; tr :15
Heat treatment
Symbol:+A (A = annealed)
Temperature(℃):780～840
Type of cooling: air, water, In special cases furnace cooling is also permitted
Maximum application temperature Ta for air
Ta max(℃):800
(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 1 % elongation at elevated temperature (Strength in N/mm2)
Elongation 1 % in 1 000 h:
500℃:80
600℃:27.5
700℃:8.5
800℃:3.7
900℃:1.8
Elongation 1 % in 10 000 h:
500℃:50
600℃:17.5
700℃:4.7
800℃:2.1
900℃:1.0
Estimated average value of the strength for rupture at elevated temperature
(Strength in N/mm2)
Rupture in 1 000 h:
500℃:160
600℃:55
700℃:17
800℃:7.5
900℃:3.6
Rupture in 10 000 h:
500℃:100
600℃:35
700℃:9.5
800℃:4.3
900℃:1.9
Rupture in 100 000 h:
500℃:55
600℃:20
700℃:5
800℃:2.3
900℃:1.0
Physical properties for the steels and nickel alloys
Density(kg/dm2):7.7
Linear expansion coefficient (10⁻⁶K⁻¹): between 20℃ and
200℃:11.5
400℃:12.0
600℃:12.5
800℃:13.0
1000℃:-
Thermal conductivity
W/(m.K)
at 20℃: 23
at 500℃：25
Specific heat capacity
kJ(kg.k)
at 20℃：0.45
Electrical resistivity
Ω.mm²/m
at 20℃：0.70
Magnetizability：yes