Iron Comparison- Gray Iron and Ductile Iron

Gray Iron,

Gray iron or grey iron was the original “cast iron”. It is an alloy of carbon, silicon, and iron, containing from 1.7 to 4.5% C and 1 to 3% Si. It is relatively easy and inexpensive to make. Compared to the more modern engineered irons, gray iron has a lower tensile strength and lower ductility.

Standard

Grey Iron Grade

China

—

HT350

HT300

HT250

HT200

HT150

HT100

Japene

—

FC350

FC300

FC250

FC200

FC150

FC100

ASTM A48

NO.60

NO.50

NO.45

NO.35

NO.30

NO.20

—

Gost 1412

CЧ40

CЧ35

CЧ30

CЧ25

CЧ20

CЧ15

CЧ10

DIN 1691

GG40

GG35

GG30

GG25

GG20

GG15

—

ITALY

—

G35

G30

G25

G20

G15

G10

France

FGL400

FGL350

FGL300

FGL250

FGL200

FGL150

—

BS

—

350

300

250

200

150

100

Poland

Z140

Z135

Z130

Z125

Z120

Z115

—

IS 6331

FG400

FG350

FG300

FG260

FG200

FG150

—

Romania

FC400

FC350

FC300

FC250

FC200

FC150

—

Spain

—

FG35

FG30

FG25

FG20

FG15

—

Belgium

FGG40

FGG35

FGG30

FGG25

FGG20

FGG15

FGG10

Australia

T400

T350

T300

T260

T220

T150

—

Sweden

O140

O135

O130

O125

O120

O115

O110

Hungary

OV40

OV35

OV30

OV25

OV20

OV15

—

Bulgaria

—

Vch35

Vch30

Vch25

Vch20

Vch15

—

ISO 185

—

350

300

250

200

150

100

泛美标准

FG400

FG350

FG300

FG250

FG200

FG150

FG100

Taiwan

—

—

FC300

FC250

FC200

FC150

FC100

Netherlands

—

GG35

GG30

GG25

GG20

GG15

—

Luxemburg

FGG40

FGG35

FGG30

FGG25

FGG20

FGG15

—

Austria

—

GG35

GG30

GG25

GG20

GG15

—

Ductile iron, also called ductile cast iron, spheroidal graphite iron, or nodular cast iron, is a type of cast iron invented in 1943 by Keith Millis. While most varieties of cast iron are brittle, ductile iron is much more flexible and elastic, due to its nodular graphite inclusions.

Standard

Ductile Iron Grade

China

QT400-18

QT450-10

QT500-7

QT600-3

QT700-2

QT800-2

QT900-2

Japanese

FCD400

FCD450

FCD500

FCD600

FCD700

FCD800

—

ASTM

60-40-18

65-45-12

70-50-05

80-60-03

100-70-03

120-90-02

—

Gost

BЧ40

BЧ45

BЧ50

BЧ60

BЧ70

BЧ80

BЧ100

DIN

GGG40

—

GGG50

GGG60

GGG70

GGG80

—

Italy

GS370-17

GS400-12

GS500-7

GS600-2

GS700-2

GS800-2

—

France

FGS370-17

FGS400-12

FGS500-7

FGS600-2

FGS700-2

FGS800-2

—

BS

400/17

420/12

500/7

600/7

700/2

800/2

900/2

Porland

ZS3817

ZS4012

ZS

4505

ZS6002

ZS7002

ZS8002

ZS9002

5002

is

SG370/17

SG400/12

SG500/7

SG600/3

SG700/2

SG800/2

—

Romania

—

—

—

—

FGN70-3

—

—

Spain

FGE38-17

FGE42-12

FGE50-7

FGE60-2

FGE70-2

FGE80-2

—

Belguim

FNG38-17

FNG42-12

FNG50-7

FNG60-2

FNG70-2

FNG80-2

—

Australia

300-17

400-12

500-7

600-3

700-2

800-2

—

Sweden

0717-02

—

0727-02

0732-03

0737-01

0864-03

—

Hungary

GǒV38

GǒV40

GǒV50

GǒV60

GǒV70

—

—

Bulgaria

380-17

400-12

450-5

600-2

700-2

800-2

900-2

500-2

ISO

400-18

450-10

500-7

600-3

700-2

800-2

900-2

（COPANT）

—

FMNP45007

FMNP55005

FMNP65003

FMNP70002

—

—

Finland

GRP400

—

GRP500

GRP600

GRP700

GRP800

—

Holand

GN38

GN42

GN50

GN60

GN70

—

—

Luxemburg

FNG38-17

FNG42-12

FNG50-7

FNG60-2

FNG70-2

FNG80-2

—

Austria

SG38

SG42

SG50

SG60

SG70

—

—

You can download : Iron Comparison.pdf