Casting ductile iron

Dimensions(mm)

Normal(mm)

Premium(mm)

Casting
Code

Tensile Strength
MPa(Kgf/mm2)

Yield Strength
MPa(Kgf/mm2)

Percentage
Elongation
¦Ä(%)

Brinell
Hardness

(HBS)

Major
Metallurgic
al Structure
(For reference)

QT400-15

400(40.80)

250(25.50)

15

130-180

Ferrite

QT450-10

450(45.80)

310(31.60)

10

160-210

Ferrite

QT500-7

500(51.00)

320(32.65)

7

170-230

Ferrite&Pearlite

QT600-3

600(61.20)

370(37.75)

3

190-270

Ferrite&Pearlite

QT700-2

700(71.40)

420(42.85)

2

225-335

Pearlite

QT800-2

800(81.60)

480(48.95)

2

245-335

Pearlite(or four
major
structures)

QT900-2

900(91.80)

600(61.20)

2

280-360

Pearlite(or four
major