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 |
|
