NiCr20Ti 2.4951 BS-EN-10095-1999

NiCr20Ti 2.4951 BS-EN-10095-1999

Heat resisting nickel alloys

Designation

Name:NiCr20Ti

Number:2.4951

NiCr20Ti 2.4951 Chemical composition

C0.08~0.15

Mn(max):max.1.00

Si(max):1.00

P(max):0.020

S(max):0.015

NiRest

Cr:14.00~17.00

Co: max 5.00

Fe:max 5.00

Al:max 0.30

Ti:max 0.20~0.60

Cu:.max.0.50

NiCr20Ti 2.4951 Mechanical properties at room temperature

Form: flat products

Thickness a or diameter(d:mm): a ≤75

Form: bars

Thickness a or diameter(d:mm): d ≤160

Form: rods

Thickness a or diameter(d:mm): d ≤25

 

HB max.:230

Proof strength: Rp0,2N/mm² (min):240

 

Tensile strength Rm N/mm²):550~850

A % min

Long product: 30

Flat products:(1)0,5≤a<3:(1,tr):~   (2)3≤ a  1:30 |tr:

Heat treatment

Symbol: +A(A = annealed)

Temperature(℃):1000~1050

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 rupture at elevated temperature

(Strength in N/mm2)

  Rupture in 1 000 h:

800℃:37

900℃:20

1000℃:11

 

Rupture in 10 000 h:

600℃:100

700℃:36

800℃:17

900℃:10

1000℃:6

Rupture in 100 000 h:

600℃:68

700℃:23

800℃:11.5

900℃:7

1000℃:5

 

Physical properties for the steels and nickel alloys

Density(kg/dm2):8.4

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

200℃:12.7

400℃:13.9

600℃:15.0

800℃:16.5

1000℃:18.2

Thermal conductivity

W/(m.K)

      at 20℃: 12

at 500℃:20

 

Specific heat capacity

kJ(kg.k)

        at 20℃:0.46

 

  Electrical resistivity

             Ω.mm²/m

       at 20℃:1.09

 MagnetizabilityParamagnetic

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