AISI 4140 Steel Castings

AISI 4140 Steel Castings

Cast Steel Grade 70-36 Material Castings Investment Castings Company Product Description and Process Cast Steel Grade 70-36 Material Castings Investment Castings Company Production process: lost wax casting process (investment casting process) Weight range: from 0.01 kilograms to 50 kilograms...

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Cast Steel Grade 70-36 Material Castings Investment Castings Company

Product Description and Process

Cast Steel Grade 70-36 Material Castings Investment Castings Company

Production process: lost wax casting process (investment casting process)

Weight range: from 0.01 kilograms to 50 kilograms

Heat Treatment Process: normalizing, annealing, tempering etc.

Machining process: CNC machine, machining center, lathe, mill machine, drill machine, etc.

Surface treatment process: Paint coating, electrophoretic paint coating, electrogalvanizing coating, black oxide coating, phosphate treatment, powder coating, etc.


Product Material and Uses

Normally produce with ASTM 4140 alloy steel, 4130 alloy steel, 8620 alloy steel, WCB, WCC, LCC Grade and other specified alloy material.

The alloy steel casting products are widely used for Auto-cars, trains, trucks, vehicle components, and mining machinery components, agricultural machinery parts, textile machinery parts, construction machinery parts, etc.


Primary Investment Casting Process

Water glass and silica sol investment casting are the two primary investment casting methods nowadays. The main differences are the surface roughness and cost of casting. Water glass method dewaxes into the high-temperature water, and the ceramic mold is made of water glass quartz sand. Silica sol method dewaxes into the flash fire, and silica sol zircon sand makes the ceramic mold. Silica sol method costs more but has the better surface than water glass method.

The process can be used for both small castings of a few ounces and large castings weighing several hundred pounds. It can be more expensive than die casting or sand casting, but per-unit costs decrease with large volumes. Investment casting can produce complicated shapes that would be difficult or impossible with other casting methods. It can also produce products with exceptional surface qualities and low tolerances with minimal surface finishing or machining required.


Alloy Structural Carbon Steel Grade Standard

China

GB

Germany

France

NF

ISO Standard

Japan

JIS

Britain

BS

America
DINW-Nr.ASTM/AISI
UNS

20Mn2

20Mn6

1.1169

20M5

22Mn6

SMn420

150M19

1320

-

30Mn2

30Mn5

1.1165

32M5

28Mn6

-

150M28

1330

G13300

35Mn2

36Mn5

1.1167

35M5

36Mn6

SMn433

150M36

1335

G13350

40Mn2

-

-

40M5

42Mn6

SMn438

-

1340

G13400

45Mn2

46Mn7

1.0912

45M5

-

SMn443

-

1345

G13450

20Cr

20Cr4

1.7027

18C3

20Cr4

SCr420

527A20

5120

G51200

40Cr

41Cr4

1.7035

42C4

41Cr4

SCr440

530A40

530M40

5140

G51400

45Cr

-

-

45C4

-

SCr445

-

5145

G51450

50Cr

-

-

50C4

-

-

-

5150

G51500

20CrMo

20CrMo5

1.7264

18CD4

18CrMo4

SCM420

CDS12

4118

G41180

25CrMo

25CrMo4

1.7218

25CD4

-

-

-

-

-

35CrMo

35CrMoV

34CrMo4

1.7220

35CD4

34CrMo4

SCM435

708A37

CDS13

4135

G41350

42CrMo

42CrMo4

1.7225

42CD4

42CrMo4

SCM440

708M40

4140

G41400

25Cr2MoVA

25Cr2Mo1VA

24CrMoV55

1.7733

-

-

-

-

-

-

38CrMo-

Al

41Cr-

AlMo7

1.8509

40CAD

6.12

41Cr

AlMo7

-

905M39

-

-

20CrNi

40CrNi

50CrNi

40NiCr6

1.5711

-

-

-

640M40

3140

G31400

20CrNiMo

21NiCrMo2

1.6523

20NCD2

21NiCr-Mo2

SNCM220

805M20

8620

G86200

40CrNiMo

45CrNiMoVA

36CrNiMo4

1.6511

40NCD3

-

SNCM439

816M40

4340

G43400


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