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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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