X10NiCrAlTi32-21 1.4876 BS-EN-10095-1999
Austenitic heat-resisting steels
Steel designation
Name：X10NiCrAlTi32-21
Number：1.4876
X10NiCrAlTi32-21 1.4876 Chemical composition
C：max.0.12
Si: max.1.00
Mn(max):2.00
P(max):0.030
S(max):0.015
Cr:19.00～23.00
Ni:30.00～34.00
Al:.0.15～0.60
Ti: 0.15～0.60
X10NiCrAlTi32-21 1.4876 Mechanical properties at room temperature
Form: bars
Thickness a or diameter(d:mm): a ≤160
HB max.:192
Proof strength: Rp0,2N/mm² (min):170
Rp1,0N/mm²(min):210
Tensile strength （Rm N/mm²）:450～680
A % min
Long product:30
Flat products:（1）0,5≤a<3：（1，tr）：28 （2）3 < a （1|tr）: 30
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(℃):1100
(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:
600℃:130
700℃:70
800℃:30
900℃:13
Elongation 1 % in 10 000 h:
600℃:90
700℃:40
800℃:15
900℃:5
Estimated average value of the strength for rupture at elevated temperature
(Strength in N/mm2)
Rupture in 1 000 h:
600℃:200
700℃:90
800℃:45
900℃:20
Rupture in 10 000 h:
600℃:152
700℃:68
800℃:30
900℃:10
Rupture in 100 000 h:
600℃:114
700℃:48
800℃:21
900℃:8
Physical properties for the steels and nickel alloys
Density(kg/dm2):8.0
Linear expansion coefficient (10⁻⁶K⁻¹): between 20℃ and
200℃:15.0
400℃:16.0
600℃:17.0
800℃:17.5
1000℃:18.5
Thermal conductivity
W/(m.K)
at 20℃: 12
at 500℃：17
Specific heat capacity
kJ(kg.k)
at 20℃：0.55
Electrical resistivity
Ω.mm²/m
at 20℃：1.0
Magnetizability：no (slightly magnetic when cold worked)