X6CrNiSiNCe19-10 1.4818 BS-EN-10095-1999

X6CrNiSiNCe19-10 1.4818 BS-EN-10095-1999

Austenitic heat-resisting steels

Steel designation

NameX6CrNiSiNCe19-10

Number1.4818

X6CrNiSiNCe19-10 1.4818 Chemical composition

C0.04~0.08

Si: 1.00~2.00

Mn(max):max.1.00

P(max):0.045

S(max):0.015

Cr:18.00~20.00

Ni:9.00~11.00

N:.0.12~0.20

Ce: 0.03~0.08

X6CrNiSiNCe19-10 1.4818 Mechanical properties at room temperature

Form: rods and sections

Thickness a or diameter(d:mm): d ≤25

HB max.:210

Proof strength: Rp0,2N/mm² (min):290

Rp1,0N/mm²(min):330

Tensile strength Rm N/mm²):600~800

A % min

Long product:40

Flat products:(1)0,5≤a<3:(1,tr):30   (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(℃):1050

 

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℃:147

700℃:61

800℃:25

900℃:9

1000℃:2.5

 

Elongation 1 % in 10 000 h:

600℃:126

700℃:42

800℃:15

900℃:5

1000℃:1.7

Elongation 1 % in 10 0000 h:

600℃:80

700℃:26

800℃:9

900℃:3

1000℃:1.0

 

 

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℃:46

900℃:18

1000℃:7

 

 

Rupture in 10 000 h:

600℃:157

700℃:63

800℃:25

900℃:10

1000℃:4

Rupture in 100 000 h:

600℃:88

700℃:35

800℃:14

900℃:5

1000℃:(1,5)

Physical properties for the steels and nickel alloys

Density(kg/dm2):7.8

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

200℃:16.5

400℃:18.0

600℃:18.5

800℃:19.0

1000℃:20.0

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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