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  BS1452 Grade 350 Gray Cast Iron  
 

BS1452 Grade 350 is a gray iron material grade with very high tensile strength, so its price is much higher than normal gray iron.

This material grade is suited for applications where the cast iron requires excellent wearing characteristics and when components require a combination of strength and wear resistance superior to those of other softer cast iron grades. Typical applications include bearings, cams, bushes, pistons, gears and dies.

Chemical Analysis of BS1452 350 Grey Cast Iron(mass fraction)(%)

Carbon

2.90-3.65%

Phosphorous

0.30% max

Manganese

0.60-0.80%

Sulphur

0.10% max

Silicon

2.10-2.90%

Iron

balance

As for normal grey iron, the chemical composition is not important comparatively. The iron foundries could adjust the compositions according to their experience as long as they could meet the physical and mechanical requirements.

Typical Properties of BS1452 350 Grey Cast Iron

Typical Tensile range of material (subject to section) N/mm² 225-315
Typical Hardness HB 235-300
Mechanical properties shown are typical and may vary subject to the size and section of this cast iron grade.

Tensile Strength of Gray Iron Casting in BS 1452 Grade 350

Grade

Wall Thickness of Casting
/mm

Tensile Strength σb≥/Mpa

Test Bar with Casting

Casting

350

10~20
20~40
40~80
80~150
150~300


290
260
230
210

315
280
250
225

Equivalent Grades of BS1452 350 Gray Cast Iron:

Country

Standard

Material Grade


ISO

ISO 185

GRADE 350


China

GB 9439

HT350


USA

ASTM A48

CLASS 50


Germany / Austria

DIN 1691

GG35


European

EN 1561

EN-GJL-350


Japan

JIS G5501

FC350


Italy

UNI 5007

G35


France

NF A32-101

FGL350


UK

BS 1452

350


Spain

UNF

FG35


Belgium

NBN 830-01

FGG35


Australia

AS 1830

T350


Sweden

SS 14 01

O135


Norway

NS11 100

SJG350

 

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