DUCTILE (S.G.) IRONS

S.G. iron is an engineering material distinguished by its high strength, toughness and ductility, combined with excellent casting properties and good machinability. It has a high modulus of elasticity and good resistance to corrosion and wear.

S.G. iron is available with a full range of matrix structures and properties resulting from alloying and heat treatment. All grades of the Australian Standard, AS1831 are available.

 

AS1831

Mechanical Properties

Tensile Strength

0.2% Proof Stress

Elongation

Brinell Hardness (HB)

Microstructure

Grade

MPa min.

MPa min.

% min.

min.

max.

350-22

350

220

22

-

150

Ferrite

400-18

400

250

18

130

180

Ferrite

400-15

400

250

15

130

180

Ferrite

450-10

450

310

10

160

210

Ferrite

500-7

500

320

7

170

230

Ferrite + pearlite

600-3

600

370

3

190

270

Pearlite + ferrite

700-2

700

420

2

225

305

Pearlite

800-2

800

480

2

245

335

Pearlite or tempered structure

900-2

900

600

2

280

360

Bainite or tempered martensite

 

      TYPICAL APPLICATIONS:

  • Pump bodies
  • Rolls
  • Sprockets
  • Sheaves
  • Brackets
  • Gears

Crank Arms

Paddle Arms

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