NiCr28FeSiCe 2.4889 BS-EN-10095-1999

NiCr28FeSiCe 2.4889 BS-EN-10095-1999

Heat resisting nickel alloys

Designation

Name:NiCr28FeSiCe

Number:2.4889

NiCr28FeSiCe 2.4889 Chemical composition

C0.05~0.12

Mn(max):max.1.00

Si(max):2.50~3.00

P(max):0.020

S(max):0.010

Nimin 45.00

Cr:26.00~29.00

Co: (A maximum of 1,5% Co is allowed andcounted as nickel.Reporting of cobalt is not required.)

Fe:21.00~25.00

Cu:.max.0.30

Ce0.03~0.09

NiCr28FeSiCe 2.4889 Mechanical properties at room temperature

Form: flat products

Thickness a or diameter(d:mm): a ≤50

Form: bars

Thickness a or diameter(d:mm): d ≤160

 

HB max.:220

Proof strength: Rp0,2N/mm² (min):240

 

Tensile strength Rm N/mm²):620~820

A % min

Long product: 35

Flat products:(1)0,5≤a<3:(1,tr):35   (2)3≤ a  1:35 |tr: 35

 

Heat treatment

Symbol: +AT(AT = solution annealed)

Temperature(℃):1150~1200

Type of cooling: water, air, cooling sufficiently rapid

Maximum application temperature Ta for air

Ta max(℃):1200

 

Creep properties

Estimated average value of the strength for 1 % elongation at elevated temperature (Strength in N/mm2)

Elongation 1 % in 1 0000 h:

700℃:25

800℃:11.9

900℃:5.9

1000℃:3.1

 

Elongation 1 % in 100 000 h:

700℃:16

800℃:7.2

900℃:3.5

1000℃:1.9

 

Estimated average value of the strength for rupture at elevated temperature

(Strength in N/mm2)

     

Rupture in 10 000 h:

700℃:40

800℃:19

900℃:9.5

1000℃:5.9

Rupture in 100 000 h:

700℃:28

800℃:13

900℃:5.9

1000℃:3

 

Physical properties for the steels and nickel alloys

Density(kg/dm2):8.0

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

200℃:14.5

400℃:15.4

600℃:16.2

800℃:17.0

1000℃:17.8

Thermal conductivity

W/(m.K)

      at 20℃: 13

at 500℃:21

 

Specific heat capacity

kJ(kg.k)

        at 20℃:0.50

 

  Electrical resistivity

             Ω.mm²/m

       at 20℃:1.18

 MagnetizabilityParamagnetic

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