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Heat resistant steel castings
EN 10295 is applicable to heat resistant steel castings,for general purposes(not for pressure applications)above 600°C.It is also applicable to heat resistant nickel and cobalt base alloys.This standard relates to castings manufactured from ferritic, austenitic-ferritic, austenitic steels,nickel and cobalt base alloys .
Table 1 -Chemical composition (cast analysis)(as a mass fraction in %)
|
Designation |
Elements |
||||||||||||
|
C |
Si |
Mn |
P max. |
S max. |
Cr |
Mo |
Ni |
Nb |
Co |
Others |
|||
|
Name |
Number |
||||||||||||
|
Ferrtic and austentic - ferntic grades |
GX30CrSi7 |
1.4710 |
0,20 to 0,35 |
1,00 to 2,50 |
0,50 to 1,00 |
0,035 |
0,030 |
6,00 to 8,00 |
Max. 0,15 |
max. 0,50 |
|||
|
GX40CrSi13 |
1.4729 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 1,00 |
0,040 |
0,030 |
12,00 to 14,00 |
Max. 0,50 |
max. 1,00 |
||||
|
GX40CrSi17 |
1.4740 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 1,00 |
0,040 |
0,030 |
16,00 to 19,00 |
Max. 0,50 |
max. 1,00 |
||||
|
GX40CrSi24 |
1.4745 |
0,30 to 0,50 |
1,00 to 2,50 |
may 1,00 |
0,040 |
0,030 |
23,00 to 26,00 |
Max. 0,50 |
max 1,00 |
||||
|
GX40CrSi28 |
1.4776 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 1,00 |
0,040 |
0,030 |
27,00 to 30,00 |
Max. 0,50 |
max. 1,00 |
||||
|
GX130CrSi29 |
1.4777 |
1,20 to 1,40 |
1,00 to 2,50 |
0,50 to 1,00 |
0,035 |
0,030 |
27,00 to 30,00 |
Max. 0,50 |
max. 1,00 |
||||
|
GX160CrSi18 |
1.4743 |
1,40 to 1,80 |
1,00 to 2,50 |
max. 1,00 |
0,040 |
0,030 |
17,00 to 19,00 |
Max. 0,50 |
max. 1,00 |
||||
|
GX40CrNiSi27-4 |
1.4823 |
0,30 to 0.50 |
1,00 to 2,50 |
max. 1,50 |
0,040 |
0,030 |
25,00 to 28.00 |
Max. 0,50 |
3,00 to 6.00 |
||||
|
Austenltic grades |
GX25CrNiSi18-9 |
1.4825 |
0,15 to 0,35 |
0,50 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
17,00 to 19,00 |
Max. 0,50 |
8,00 to 10,00 |
|||
|
GX40CrNiSi22-10 |
1.4826 |
0,30 to 0,50 |
1,00 to 2.50 |
max. 2,00 |
0,040 |
0,030 |
21,00 to 23,00 |
Max. 0.50 |
9,00 to 11.00 |
||||
|
GX25CrNiSi20-14 |
1.4832 |
0,15 to 0,35 |
0,50 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
19,00 to 21,00 |
Max. 0,50 |
13,00 to 15,00 |
||||
|
GX40CrNiSi25-12 |
1.4837 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
24,00 to 27,00 |
Max. 0,50 |
11,00 to 14,00 |
||||
|
GX40CrNiSi25-20 |
1.4848 |
0,30 to 0.50 |
1,00 to 2,50 |
max. 2,00 |
0.040 |
0,030 |
24,00 to 27,00 |
Max. 0.50 |
19,00 to 22,00 |
||||
|
GX40CrNiSiNb24-24 |
1.4855 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
23,00 to 25,00 |
Max. 0,50 |
23,00 to 25,00 |
0,80 to 1,80 |
|||
|
GX35NiCrSi25-21 |
1.4805 |
0,20 to 0,50 |
1,00 to 2,00 |
max. 2,00 |
0,040 |
0,030 |
19,00 to 23,00 |
Max 0,50 |
23,00 to 27,00 |
||||
|
GX40NiCrSi35-17 |
1.4806 |
0,30 to 0.50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
16,00 to 18.00 |
Max. 0.50 |
34,00 to 36,00 |
||||
|
GX40NiCrSiNb35-18 |
1.4807 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
17,00 to 20,00 |
Max. 0,50 |
34,00 to 36,00 |
1,00 to 1,80 |
|||
|
GX40NiCrSi38-19 |
1.4865 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
18,00 to 21,00 |
Max. 0,50 |
36,00 to 39,00 |
||||
|
GX40NiCrSiNb38-19 |
1.4849 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
18,00 to 21,00 |
max. 0,50 |
36,00 to 39,00 |
1,20 to 1,80 |
|||
|
GX10NiCrSiNb32-20 |
1.4859 |
0,05 to 0,15 |
0,50 to 1,50 |
max. 2,00 |
0.040 |
0,030 |
19,00 to 21,00 |
max. 0.50 |
31,00 to 33,00 |
0,50 to 1,50 |
|||
|
GX40NiCrSi35-26 |
1.4857 |
0,30 to 0.50 |
1,00 to 2.50 |
max. 2,00 |
0,040 |
0,030 |
24,00 to 27.00 |
max. 0.50 |
33,00 to 36,00 |
||||
|
GX40NiCrSiNb35-26 |
1.4852 |
0,30 to 0,50 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
24,00 to 27,00 |
max 0,50 |
33,00 to 36,00 |
0,80 to 1,80 |
|||
|
GX50NiCrCo20-20-20 |
1.4874 |
0,35 to 0,65 |
max. 1,00 |
max. 2,00 |
0,040 |
0,030 |
19,00 to 22,00 |
2,50 to 3.00 |
18,00 to 22,00 |
0,75 to 1,25 |
18,50 22,00 |
W:2.00 to 3,00 |
|
|
GX50NiCrCoW35-25-15-5 |
1.4869 |
0,45 to 0,55 |
1,00 to 2,00 |
max. 1,00 |
0,040 |
0,030 |
24,00 to 26,00 |
33,00 to 37,00 |
14,00 16,00 |
W:4,00 to 6,00 |
|||
|
GX40NiCrNb45-35 a |
1.4889 |
0,35 to 0,45 |
1,50 to 2,00 |
1,00 to 1,50 |
0,040 |
0,030 |
32,50 to 37,50 |
42,00 to 46,00 |
1,50 to 2,00 |
||||
|
Nickel and cobalt base alloys |
G-NiCr28W |
2.4879 |
0,35 to 0,55 |
1,00 to 2,00 |
max. 1,50 |
0,040 |
0,030 |
27,00 to 30.00 |
max. 0,50 |
47,00 to 50,00 |
Fe=bal W:4,00 to 6,00 |
||
|
G-CoCr28 |
2.4778 |
0,05 to 0,25 |
0,50 to 1,50 |
1,50 max. |
0,040 |
0,030 |
27,00 to 30,00 |
0,50 max. |
4,00 max |
0,50 max. |
48,0 to 52.0 |
Fe:bal |
|
|
G-NiCr50Nb |
2.4680 |
max. 0,10 |
max. 1,00 |
max. 0,50 |
0,020 |
0,020 |
48,00 to 52,00 |
max. 0,50 |
bal. |
1,00 to 1,80 |
Fe:max: 1,00 N:max. 0.16 |
||
|
G-NiCr15 |
2.4815 |
0,35 to 0,65 |
1,00 to 2,50 |
max. 2,00 |
0,040 |
0,030 |
12,00 to 18,00 |
max. 1,00 |
58,00 to 66,00 |
Fe:bal |
|||
|
a This grade is a new alloy.For example,for service temperatures below 1000°C,it can be advisable to restrict the limits forCr from 29,00 to 32,00 %by mass and for Si from 1,00 to 1,50 %by mass,because unfavourable conditions can result in embrittlement.
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