Standards for ADI
The tables below list the most commonly used ADI standards
Table 1. The British/European Standard for Austempered Ductile Irons.
Designation: BS EN 1564:1997
Material Designation |
Tensile strength
Rm
N/mm2
min.
|
0.2% proof stress
Rp0.2
N/mm2
min.
|
Elongation
A (%) min.
|
Brinell hardness range (BHN)
|
Symbol |
Number |
EN-GJS-800-8 |
EN-JS1100 |
800 |
500 |
8 |
260-320 |
EN-GJS-1000-5 |
EN-JS1100 |
1000 |
700 |
5 |
300-360 |
EN-GJS-1200-2 |
EN-JS1120 |
1200 |
850 |
2 |
340-440 |
EN-GJS-1400-1 |
EN-JS1130 |
1400 |
1100 |
1 |
380-480 |
Impact resistance (notched)
Materials designation |
Impact resistance value at 23±5oC (J) |
Symbol |
Number |
Mean value of 3 tests |
Individual value |
EN-GJS-800-8S-RT |
EN-JS1109 |
10 |
9 |
The American Standard for Austempered Ductile Iron Castings.
Designation: ASTM A897M-03 (published January 2004)
Grade |
Tensile strength (min)
(N/mm2) |
Yield strength (min)(N/mm2) |
Elongation
(%)min |
Impact energy(J) |
Typical
Hardness (BHN) |
1 |
900 |
650 |
9 |
100 |
269-341 |
2 |
1050 |
750 |
7 |
80 |
302-375 |
3 |
1200 |
850 |
4 |
60 |
341-444 |
4 |
1400 |
1100 |
2 |
35 |
388-477 |
5 |
1600 |
1300 |
1 |
20 |
402-512 |
Un-notched Charpy bars tested at 22 ± 4 oC.
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