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ISO 1083 1987 Standard
for Ductile Iron
ISO 1083 1987 defines the grades and the
corresponding requirements for
spheroidal graphite cast iron, which is
also called as ductile iron or nodular
iron. The latest version of this
standard is
ISO 1083 - 2004, however, the
main content was not changed since
version 1987.
This standard was issued by ISO for stipulating the
physical properties of ductile iron.
This standard is
similar with the other standards for
nodular iron such as
ASTM A536
in USA, GB
T1348 in China and
KS D4302
in Korea.
The following is the main content of
ISO 1083-1997 standard for your reference.
Grade of
ductile cast iron and mechanical properties and structure of
cast integral test bar
|
Grade |
Tensile strength
σb≥/Mpa |
Yield strength
σ0.2≥/Mpa |
Elongation
δ≥（%） |
Hardness
HBS |
Main microstructure |
|
900-2 |
900 |
600 |
2 |
280~360 |
bainite or tempered martensite |
|
800-2 |
800 |
480 |
2 |
245-335 |
perlite or tempered structure |
|
700-2 |
700 |
420 |
2 |
225~305 |
perlite |
|
600-3 |
600 |
370 |
3 |
190~270 |
perlite+ferrite |
|
500-7 |
500 |
320 |
7 |
170~230 |
ferrite +perlite |
|
450-10 |
450 |
320 |
10 |
160~210 |
ferrite +perlite |
|
400-15 |
400 |
250 |
15 |
130~180 |
ferrite |
|
400-18 |
400 |
250 |
18 |
130~180 |
ferrite |
|
350-22 |
350 |
220 |
22 |
≤150 |
ferrite |
Impact value of specimen with V gap of Attached test block of
ductile cast iron
|
Grade |
Thickness
/ mm |
Impact toughness at room temperature
aK［（23±5）℃］≥/（J/cm2） |
Impact toughness at low temperature aK≥/（J/cm2 |
|
Average value |
Individual value |
Test temperature |
Average value |
Individual value |
|
400-18A |
＞30~60
＞60~200 |
14
12 |
11
9 |
|
— |
— |
|
400-18AL |
＞30~60
＞60~200 |
— |
— |
—20±2℃
—20±2℃ |
12
10 |
9
7 |
|
350-22A |
＞30~60
＞60~200 |
17
15 |
14
12 |
|
— |
— |
|
350-22AL |
＞30~60
＞60~200 |
— |
— |
—40±2℃
—40±2℃ |
12
10 |
9
7 |
Mechanical properties and structure of
attached test block of ductile cast iron
|
Grade |
Thickness
/mm |
Tensile strength
σb≥/Mpa |
Yield strength
σ0.2≥/Mpa |
Elongation
δ≥（%） |
Hardness
HBS |
Main microstructure |
|
700-2A |
＞30~60
＞60~200 |
700
650 |
400
380 |
2
1 |
200~320 |
perlite |
|
600-3A |
＞30~60
＞60~200 |
600
550 |
360
340 |
2
1 |
180~270 |
perlite+ferrite |
|
500-7A |
＞30~60
＞60~200 |
450
420 |
300
290 |
7
5 |
170~240 |
ferrite +perlite |
|
400-15A |
＞30~60
＞60~200 |
390
370 |
250
240 |
15
12 |
130~180 |
ferrite |
|
400-18A |
＞30~60
＞60~200 |
390
370 |
250
240 |
15
12 |
130~180 |
ferrite |
|
350-22A |
＞30~60
＞60~200 |
330
320 |
220
210 |
18
15 |
≤150 |
ferrite |
Hardness Grade Hardness and structure of
ductile cast iron castings
|
Hardness Grade |
Hardness
HBS |
Main structure analysis |
Mechanical properties (parameter) |
|
Tensile strength
σb≥/Mpa |
Yield strength
σ0.2≥/Mpa |
Elongation
δ≥（%） |
|
H330 |
280~360 |
bainite or tempered martensite |
900 |
600 |
2 |
|
H300 |
245~335 |
perlite or tempered martensite |
800 |
480 |
2 |
|
H265 |
225~305 |
perlite |
700 |
420 |
2 |
|
H230 |
190~270 |
perlite—ferrite |
600 |
370 |
3 |
|
H200 |
170~230 |
ferrite —perlite |
500 |
320 |
7 |
|
H185 |
160~210 |
ferrite |
450 |
310 |
10 |
|
H155 |
130~180 |
ferrite |
400 |
250 |
15 |
|
H150 |
130~180 |
ferrite |
400 |
250 |
18 |
|
H130 |
≤150 |
ferrite |
350 |
220 |
22 |
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