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Cast iron refers to a group of iron alloys that have greater than 2% carbon. Compared to steel, cast iron has a lower melting point and good fluidity making it ideal for casting complex shapes with thin wall sections. Cast iron also offers excellent machinability.
Grey iron contains carbon in the form of flake graphite and is the most commonly used cast iron, it is also known as flake graphite iron. Compared to steel cast iron has lower shock resistance and lower tensile strength, but offers compressive strength on a par with low carbon steels.
SG iron is cast iron containing graphite in the form of nodules — Spheroidal Graphite. SG iron is also known as ductile iron, the rounded graphite nodules produces a more ductile cast iron that inhibits the formation of cracks.
Grey cast iron
Grey cast iron supplied conforming to BS EN 1561 (2011), equivalent to ISO 185 (2005)
|Material Grade (BS EN 1561)||BS 1452 grade||Tensile strength N/mm2||Hardness HB|
|EN-GLJ-250||Grade 250||250 — 350||195 — 275|
|EN-GLJ-300||Grade 300||300 — 400||215 — 275|
|EN-GLJ-350||Grade 350||350 — 450||235 — 275|
|We can supply grey cast iron bar in other grades upon request. Please call for availability.|
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Round BarSquare or Flat BarSheetPlateCircleRingHexagon BarRound TubingSquare Tubing
|Cast Iron Rounds:||Flats:||Squares:|
|25mm diameter to 450mm diameter||40mm x 25mm to 320mm x 80mm||30mm to 410mm|
|Standard bar lengths are 3 metres.|
Grey cast iron — current standard BS EN 1561 (2011), equivalent to ISO 185 (2005), supercedes BS 1452
SG iron — current standard BS EN 1563 (2011), equivalent to ISO 1083 (2004), supercedes BS 2789
Based in Wolverhampton, West Midlands, Steel Express are steel suppliers and stockholders. Stock is delivered on our own fleet of vehicles locally and nationally quickly and efficiently on the day we say we will.
We also provide a free issue cutting service, press braking, fabrication and forging.
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