Dandong Foundry
About Us Casting Products Casting Workshop Machining Workshop Inspection Certificate Blog ArticlesContact Us

    ► Stove & Boiler Metal Parts  
  ► Construction Machinery Parts
  ► Agricultural Machinery Parts
  ► Pump & Valve Metal Parts
  ► Pipe Fittings & Manholes
  ► Other Iron & Steel Castings

 
 
 


Iron and Steel Rough Casting Tolerance Standard

(ISO 8062:1994; SFSA2000; BS6615:1996)

What standard can be used for the rough casting tolerance for iron and steel materials? How to choose suitable casting process for your iron and steel castings? Which casting process is suitable to your products?

After years experience, we found many standards can help you to solve these questions. Please check the following table, you will find what tolerance grade can be reached by every casting process. We have referred to the standards of ISO 8062:1994, SFSA200 and BS6615:1996. and we hope these information will be helpful for you to choose a suitable casting process.

As for the imperial (inch) tolerance standard, please check our article Rough Casting Tolerance by Inch.

Reachable Casting Tolerance Grades of Casting Processes

Conditions, Casting Processes

Select Tolerance Grades

all sand molding process fully capable including hand molding, most appropriate for large castings CT 12-14
appropriate for most casting types and sand molding processes CT 10-12
Sand castings made by automatic moulding, molding machine and shell molding process. CT 8-10
permanent metal moulding process and low pressure casting. CT 7-9
lost wax investment casting process include water glass and silicon. Silicon is better than water glass. CT 5-7

BS 6615 : 1996 - Rough Casting Tolerances

Raw casting
 basic dimension
mm

Total casting tolerance
mm

over up to
and
including

Casting tolerance grade CT

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
-
10
16
10
16
25
0.09
0.1
0.11
0.13
0.14
0.15
0.18
0.2
0.22
0.26
0.28
0.3
0.36
0.38
0.42
0.52
0.54
0.58
0.74
0.78
0.82
1
1.1
1.2
1.5
1.6
1.7
2
2.2
2.4
2.8
3
3.2
4.2
4.4
4.6
-
-
6
-
-
8
-
-
10
-
-
12
25
40
63
40
63
100
0.12
0.13
0.14
0.17
0.18
0.2
0.24
0.26
0.28
0.32
0.36
0.4
0.46
0.5
0.56
0.64
0.7
0.78
0.9
1
1.1
1.3
1.4
1.6
1.8
2
2.2
2.6
2.8
3.2
3.6
4
4.4
5
5.6
6
7
8
9
9
10
11
11
12
14
14
16
18
100
160
250
160
250
400
0.15
-
-
0.22
0.24
-
0.3
0.34
0.4
0.44
0.5
0.56
0.62
0.7
0.78
0.88
1
1.1
1.2
1.4
1.6
1.8
2
2.2
2.5
2.8
3.2
3.6
4
4.4
5
5.6
6.2
7
8
9
10
11
12
12
14
16
16
18
20
20
22
25
400
630
1 000
630
1 000
1 600
-
-
-
-
-
-
-
-
-
0.64
-
-
0.9
1
-
1.2
1.4
1.6
1.8
2
2.2
2.6
2.8
3.2
3.6
4
4.6
5
6
7
7
8
9
10
11
13
14
16
18
18
20
23
22
25
29
28
32
37
1 600
2 500
4 000
6 300
2 500
4 000
6 300
10 000
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
2.6
-
-
-
3.8
4.4
-
-
5.4
6.2
7
-
8
9
10
11
10
12
14
16
15
17
20
23
21
24
28
32
26
30
35
40
33
38
44
50
42
49
56
64
For sizes up to 16 mm, general tolerances form CT 13 to CT16 are not available. For these sizes individual tolerances shall be indicated.
Grade 16 exists only for wall thicknesses of castings generally specified to CT15.

Home

   © DANDONG FUDING ENGINEERING MACHINERY CO., LTD. All Rights Reserved.
  
SITEMAP | Iron Foundry, Automatic Molding, Green Sand Casting, Resin Sand Casting, Shell Molding, Casting, Iron Castings, Steel Castings, Gray Iron Casting, Ductile Iron Casting, Cast Iron Price