X10NiCrAlTi32-21 1.4876 BS-EN-10095-1999

X10NiCrAlTi32-21 1.4876 BS-EN-10095-1999

Austenitic heat-resisting steels

Steel designation

NameX10NiCrAlTi32-21

Number1.4876

X10NiCrAlTi32-21 1.4876 Chemical composition

Cmax.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)

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