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DIN 1693 1997 Standard for Ductile Iron

This is a Germany standard for stipulating the physical properties of ductile iron. Many iron foundries in China could understand this standard very well. This standard is similar with the other standards for nodular iron such as ASTM A536 in USA, GB T1348 in China, KS D4302 in Korea and ISO 1083. The following is the main content of DIN 1693-1997 standard for your reference.

Grade and mechanical properties of ductile cast iron
Grade
Material No
W-Nr.
Tensile strength
σb≥/Mpa
Yield strength
σ0.2≥/Mpa
Elongation
δ≥（％）
Microstructure
GGG-40
GGG-50
GGG-60
GGG-70
GGG-80
0.7040
0.7050
0.7060
0.7070
0.7080
400
500
600
700
800
250
320
380
44
500
15
7
3
2
2
mainly ferrite
ferrite / pearlite
pearlite /ferrite
mainly pearlite
pearlite
 
Ductile cast iron which should guarantee the absorbed-in-fracture energy of gap specimen
Grade
Material No
W-Nr.
Tensile strength
σb≥/Mpa
Yield strength
σ0.2≥/Mpa
Elongation
δ≥（％）
AKV≥/J
Average value of three specimen
Individual value
GGG-35.3
GGG-40.3
0.7033
0.7043
350
400
220
250
22
18
14
14
11
11
 
Mechanical properties of attached specimen of ductile cast iron
Grade
Material No
W-Nr.
Thick-ness
/mm
Thickness
Of the attached specimen
/mm
Tensile strength
σb≥/Mpa
Yield strength
σ0.2≥/Mpa
Elon-gation
δ≥（％）
（20℃）
AKV≥/J
Micro-structure
Average value of three specimen
Individual value
GGG-40.3
0.7043
30~60
60~200
40
70
390
370
250
240
15
12
14
12
11
9
Mainly ferrite
GGG-40
0.7040
30~60
60~200
40
70
390
370
250
240
15
12
-
Mainly ferrite
GGG-50
0.7050
30~60
60~200
40
70
450
420
300
290
7
5
-
ferrite and pearlite
GGG-60
0.7060
30~60
60~200
40
70
600
550
360
340
2
1
-
Pearlite and ferrite
GGG-70
0.7070
30~60
60~200
40
70
700
650
400
380
2
1
-
Mainly pearlite
  
 Grade and mechanical properties of vermicular cast iron
Grade or name
Tensile strength
σb≥/Mpa
Yield point
σ0.2≥/Mpa
Elongation
δ（％）
Compressive strength
σbc≥/Mpa
bending resistant properties
σbb≥/Mpa
Impact toughness
αK/（J/cm2）
Hardness
HBS
GGV-30（ferrite ）
≥300　　　
≥240
2
500
600
10
130~190
GGV-40（pearlite）
400~500
340~440
1
600
700
—
200~280
DIN1693
magnesium iron
350~900
250~600
25~30
800~1200
—
—
120~350
Ferrite
Matrix vermicular iron
300~380
240~300
2~8
500~600
600~700
10~25
130~190

 

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