X9CrNiSiNCe21-11-2 1.4835 BS-EN-10095-1999

X9CrNiSiNCe21-11-2 1.4835 BS-EN-10095-1999

Austenitic heat-resisting steels

Steel designation

NameX9CrNiSiNCe21-11-2

Number1.4835

X9CrNiSiNCe21-11-2 1.4835 Chemical composition

C0.05~0.12

Si:1.40~2.50

Mn(max):1.00

P(max):0.045

S(max):0.015

Cr:20~22

Ni:10.00~12.00

N:.0.12~0.20

Ce:0.03~0.08

X9CrNiSiNCe21-11-2 1.4835 Mechanical properties at room temperature

Form: flat products

Thickness a or diameter(d:mm): a ≤75

HB max.:210

Proof strength: Rp0,2N/mm² (min):310

Rp1,0N/mm²(min):350

Tensile strength Rm N/mm²):650~850

A % min

Long product:40

Flat products:(1)0,5≤a<3:(1,tr):37   (2)3 < a  (1|tr): 40;

Heat treatment

Symbol: +AT (A T=solution annealed)

Temperature(℃):1020~1120

Type of cooling: water, air, cooling sufficiently rapid

Maximum application temperature Ta for air

Ta max(℃):1150

 

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℃:170

700℃:66

800℃:31

900℃:15.5

1000℃:(8)

 

Elongation 1 % in 10 000 h:

600℃:126

700℃:45

800℃:19

900℃:10

1000℃:(5)

 

Elongation 1 % in 100 000 h:

600℃:80

700℃:26

800℃:11

900℃:6

1000℃:(3)

 

 

Estimated average value of the strength for rupture at elevated temperature

(Strength in N/mm2)

       Rupture in 1 000 h:

600℃:238

700℃:105

800℃:50

900℃:24

1000℃:(12)

 

Rupture in 10 000 h:

600℃:157

700℃:63

800℃:27

900℃:13

1000℃:(7)

 

Rupture in 100 000 h:

600℃:88

700℃:35

800℃:15

900℃:8

1000℃:(4)

 

Physical properties for the steels and nickel alloys

Density(kg/dm2):7.8

Linear expansion coefficient (10⁻⁶K⁻¹): between 20℃ and

200℃:17.0

400℃:18.0

600℃:18.5

800℃:19.0

1000℃:19.5

Thermal conductivity

W/(m.K)

      at 20℃: 15

at 500℃:21

 

Specific heat capacity

kJ(kg.k)

        at 20℃:0.50

 

  Electrical resistivity

             Ω.mm²/m

       at 20℃:0.85

 Magnetizability:no (slightly magnetic when cold worked)

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