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  GB 1348 QT800-2 Ductile Cast Iron  
 

GB 1348 QT800-2 is pearlitic nodular cast iron with very high tensile strength, but very low ductility.

For pearlite nodular cast iron, pearlite content in the matrix structure accounted is more than 80% of ductile iron (nodular iron). The ductile iron conforms to Chinese national standards QT600-2, QT700-2 and QT800-2 belong to pearlite nodular cast iron.

This type of ductile iron is usually obtained by normalizing treatment, or it can be obtained by adding alloying elements and cooperating with technological measures. The QT600-2, QT700-2 and QT800-2 nodular cast iron is mainly used to manufacture parts that require high strength, wear resistance and low toughness (low plasticity).

Mechanical properties of GB 1348 QT800-2 ductile cast iron:

Mechanical Properties

GB 1348 QT800-2

Tensile Strength σb (MPa)

≥800

Yield Strength σ0.2 (MPa)

≥480

Elongation δ(%)

≥2

Hardness HBS

245~335

Equivalent Grades of GB 1348 QT800-2 ductile cast iron:

Country

Standard

Material Grade

ISO

ISO 1083

GRADE 800-2

China

GB 1348

QT800-2

USA

ASTM A536

120-90-02

Germany/Austria

DIN 1693

GGG80

European

EN 1563

EN-GJS-800-2

Japan

JIS G5502

FCD800

Italy

UNI 4544

GS800-2

France

NF A32-201

FGS800-2

UK

BS 2789

800/2

Spain

UNF

FGE80-2

Belgium

NBN 830-02

FNG80-2

Australia

AS 1831

GRADE 800-2

Sweden

SS 14 07

0864-03

Norway

NS11 301

SJK-800

 

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