Cast Iron

Materials: Cast Iron

Cast iron is an iron-carbon alloy containing high percentages of carbon that can vary from 2.11% to 6.67%

Within this alloy can be found other elements such as: silicon, phosphorus, sulfur and manganese whose percentages vary according to the different cases.
Compared to mild steel, cast iron has higher hardness and therefore resistance to abrasion, and less resilience and therefore greater fragility and lower thermal expansion.

The main advantages of cast iron

  • Poor inclusions and blows that help reduce production costs
  • It is possible to produce profiles with dimensions very close to those of the final piece, reducing production costs
  • Thanks to the graphite particles there is an excellent workability of the material
  • Low friction coefficient and good wear resistance
  • Good thermal conductivity
  • Excellent fatigue resistance
  • Excellent resistance to hydraulic and pneumatic pressure
  • Excellent corrosion resistance with similar values, in the case of water and oil, to non-ferrous materials
  • Low density, with a specific gravity 6% lower than steel, reducing costs and weight

Technological characteristics of cast iron

FEATURE

MEASURING UNIT

DIAMETERS

EN-GJL-250C EN 16482

EN-GJL-300C EN 16482

Tensile strength

N/mm2

20 < D ≤ 50

195

220

50 < D ≤ 100

180

205

100 < D ≤ 200

165

195

200 < D ≤ 400

155

185

400 < D ≤ 700

155

185

Hardness

BHN

160 – 230

190 – 260

Matrix shape

Perlitic – Ferritic

Mostly Perlitic

FEATURE

UNIT OF MEASURE

DIAMETERS

EN-GJS-400-15C EN 16482

EN-GJS-500-7C EN 16482

EN-GJS-400/500 EN 16482

EN-GJS-600-3C EN 16482

EN-GJS-700-2C EN 16482

Tensile strength

N/mm2

20 < D ≤ 60

400

500

500

600

700

60 < D ≤ 120

390

450

450

600

700

120 < D ≤ 400

370

420

420

550

650

400 < D ≤ 700

370

420

420

550

650

Hardness

BHN

120 – 180

170 – 230

170 – 210

200 – 260

230 – 300

0,2% yield strength limit

N/mm2

20 < D ≤ 60

250

320

320

370

420

60 < D ≤ 120

250

300

300

360

400

120 < D ≤ 400

240

290

290

340

380

400 < D ≤ 700

240

290

290

340

380

Elongation

%

20 < D ≤ 60

15

7

15

3

2

60 < D ≤ 120

14

7

14

2

2

120 < D ≤ 400

11

5

11

1

1

400 < D ≤ 700

11

5

11

1

1

Matrix shape

Ferritic

Ferritic – Perlitic

Ferritic

Perlitic – Ferritic

Mostly Perlitic

EN-GJL-200C EN 16482

Ferritic lamellar cast iron

EN-GJL-200C EN 16482

 

Description of material

Thickness of the section in mm

Tensile Strength Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJL-200C EN 16482

20

50

155

120 – 200

Mostly Ferritic

50

100

140

100

200

125

200

400

115

400

700

115

EN-GJL-250C EN 16482

Ferritic-perlitic lamellar cast iron

EN-GJL-250C EN 16482

 

Description of material

Thickness of the section in mm

Tensile Strength Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJL-250C EN 16482

20

50

195

160 – 230

Perlitic – Ferritic

50

100

180

100

200

165

200

400

155

400

700

155

EN-GJL-300C EN 16482

Perlitic lamellar cast iron

EN-GJL-300C EN 16482

 

Description of material

Thickness of the section in mm

Tensile Strength Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJL-300C EN 16482

20

50

220

190 – 260

Mostly Perlitic

50

100

205

100

200

195

200

400

185

400

700

185

EN-GJS-400-15C EN 16482

Ferritic spheroidal cast iron

EN-GJS-400-15C EN 16482

 

Description of material

Thickness of the section in mm

Unit load of proportional deviation 0,2% Rp 0,2
N/mm2
Min

Elongation to
%
Min

Tensile Strengh Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJS-400-15C EN 16482

20

60

250

15

250

120 – 180

Ferritic

60

120

250

14

250

120

400

240

11

240

400

700

240

11

240

EN-GJS-500-7C EN 16482

Perlitic – ferritic spheroidal cast iron

EN-GJS-500-7C EN 16482

 

Description of material

Thickness of the section in mm

Unit load of proportional deviation 0,2% Rp 0,2
N/mm2
Min

Elongation to
%
Min

Tensile Strengh Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJS-500-7C EN 16482

20

60

320

7

500

170 – 230

Ferritic Perlitic

60

120

300

7

450

120

400

290

5

420

400

700

290

5

420

GJS 400/500

Perlitic – ferritic spheroidal cast iron

GJS 400/500

 

Description of material

Thickness of the section in mm

Unit load of proportional deviation 0,2% Rp 0,2
N/mm2
Min

Elongation to
%
Min

Tensile Strengh Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

grater than

less than or equal to

EN-GJS-400/500

20

60

320

15

500

170 – 210

Ferritic

60

120

300

14

450

120

400

290

11

420

400

700

290

11

420

EN-GJS-600-3C EN 16482

Perlitic spheroidal cast iron

EN-GJS-600-3C EN 16482

 

Description of material

Thickness of the section in mm

Unit load of proportional deviation 0,2% Rp 0,2
N/mm2
Min

Elongation to
%
Min

Tensile Strengh Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJS-600-3C EN 16482

20

60

370

3

600

200 – 260

Perlitic – Ferritic

60

120

360

2

600

120

400

340

1

550

400

700

340

1

550

GJS 700-2 EN 1563

Perlitic spheroidal cast iron

GJS 700-2 EN 1563

 

Description of material

Thickness of the section in mm

Unit load of proportional deviation 0,2% Rp 0,2
N/mm2
Min

Elongation to
%
Min

Tensile Strengh Rm
N/ mm2
Min

HARDNESS (BHN)

MATRIX SHAPE

greater than

less than or equal to

EN-GJS-700-2C EN 16482

20

60

420

2

700

230 – 300

Mostly Perlitic

60

120

400

2

700

120

400

380

1

650

400

700

380

1

650

** The titles and data provided in the tables are for information only and do not imply any responsibility on the part of UFG srl.

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