Heat Resistant Steel Sand Casting

Heat Resistant Steel Sand Casting

ASTM A297 25Cr-12Ni Heat Resistant Steel Sand Castings Product Description and Process ASTM A297 25Cr-12Ni Heat Resistant Steel Sand Castings Production process: sand castings; investment castings Weight range: from 1 kilograms to 2000 kilograms Surface treatment process: Painting Product...

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ASTM A297 25Cr-12Ni Heat Resistant Steel Sand Castings

Product Description and Process

ASTM A297 25Cr-12Ni Heat Resistant Steel Sand Castings

Production process: sand castings; investment castings

Weight range: from 1 kilograms to 2000 kilograms

Surface treatment process: Painting


Product Material and Uses

Normally produce with ASTM A297/A297M Grade HD, Grade HF, Grade HH, Grade HK, Grade HP GradeHK-40, Grade HL, Grade HP, Grade HW, Grade HC, Grade HN, ZG30Cr26Ni5, ZG35Cr26Ni12, ZG30Ni35Cr15, ZG40Cr28Ni16, ZG35Ni24Cr18Si2, ZG40Cr25Ni20, ZG40Cr30Ni20, ZG45Ni35Cr26, ZG35Cr24Ni7SiN, ZG35Cr28Ni16, etc.

The heat resistant steel casting products are widely used for heat-engine plant industry, furnace for heat treatment, cast industry, steel industry, turbine components, aircraft industry, etc.


Heat-Resistant Alloy Castings

The heat-resistant casting alloys are those compositions that contain at least 12% chromium which are capable of performing satisfactorily when used at temperatures above 1200 0F. As a group, heat-resistant compositions are higher in alloy content than the corrosion-resistant types. The heat-resistant alloys are composed principally of nickel, chromium, and iron together with small percentages of other elements. Nickel and chromium contribute to the superior heat resistance of these materials. Castings made of these alloys must meet two basic requirements:

1 Good surface film stability(oxidation and corrosion resistance) in various atmospheres and at the temperature to which they are subjected.

2 Sufficient mechanical strength and ductility to meet high temperature service conditions.


Heat-resistant alloys grade and chemical compositions-Iron base alloys

Alloy Casting Institute Designation

Alloy Type

ASTM

AISI

UNS

Chemical Composition %

Ni

Cr

C

Mn
max

Si
max

Mo
max

Other

HA

8-10Cr

A217

-

-

-

8-10

0.2max

0.35-
0.65

1

0.9-
1.2

Fe bal

HC

28Cr

A297

446

J92605

4max

26-30

0.5max

1

2

0.5

Fe bal

HD

28Cr-6Ni

A297

327

J93005

4-7

26-30

0.5max

1.5

2

0.5

Fe bal

HE

28Cr-9Ni

A297

312

J93403

8-11

26-30

0.2-0.5

2

2

0.5

Fe bal

HF

19Cr-9Ni

A297

302B

J92603

9-12

19-23

0.2-0.4

2

2

0.5

Fe bal

HH

25Cr-12Ni

A297
A447

309

J93503

11-14

24-28

0.2-0.5

2

2

0.5

Fe bal

HI

28Cr-15Ni

A297

-

J94003

14-18

26-30

0.2-0.5

2

2

0.5

Fe bal

HK

25Cr-20Ni

A297
A351
A567

310

J94224

18-22

24-28

0.2-0.6

2

2

0.5

Fe bal

IN-519’

24Cr-24Ni

-

-

-

23-25

23-25

0.25-0.35

1

1

-

Cb1.4-1.8
Fe bal

HL

30Cr-20Ni

A297

-

J94604

18-22

28-32

0.2-0.6

2

2

0.5

Fe bal

HN

25Ni-20Cr

A297

-

J94213

23-27

19-23

0.2-0.5

2

2

0.5

Fe bal

HP

35Ni-26Cr

A297

-

J95705

33-37

24-28

0.35-0.75

2

2

0.5

Fe bal

HP-50WZ

35Ni-26Cr

-

-

-

33-37

24-28

0.45-0.55

2

2.5

-

W 4-6
Zr0.1-1.0
Fe bal

HT

35Ni-17Cr

A297
A351

330

J94605

33-37

15-19

0.35-0.75

2

2.5

0.5

Fe bal

HU

39Ni-18Cr

A297

-

J95405

37-41

17-21

0.35-0.75

2

2.5

0.5

Fe bal

HW

60Ni-12Cr

A297

-

-

58-62

10-14

0.35-0.75

2

2.5

0.5

Fe bal

HX

66Ni-17Cr

A297

-

-

64-68

15-19

0.35-0.75

2

2.5

0.5

Fe bal

Chromium












Nickel

50Cr-50Ni

A560

-

-

bal

48-52

0.1max

0.3

1

-

Fe1.0max

IN-657’

50Cr-48Ni

-

-

-

bal

48-52

0.1max

0.3

0.5

-

Cb1.4-1.7
N0.16max
Fe1.0max


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