Available Shapes
BS2789 Grade 420-12 SG Iron
BS2789 Grade 420-12 SG iron stockholders and suppliers, delivering to the whole of the Middle East. West Yorkshire Steel are suppliers of this spheroidal graphite iron (SG Iron) specification as continuously cast bar. As an S G Iron it is available in diameters and a limited range of flat sections. Occasionally referenced as a ductile iron grade BS2789 Grade 420-12 is a spheroidal graphite iron that possesses strength, impact and ductile characteristics of a different type to grey cast iron grades, though with similar machining characteristics.
Related Specifications
BS EN 1563 EN16482 EN GJS 400-15 60-40-10 65-45-12
FGS420-12 SF400 SFP400 DIN 1693 ISO 185 250
Applications
Analysis
Typical Properties
Applications
BS2789 Grade 420-12 is suitable for applications where the optimal impact, fatigue, electrical conductivity and magnetic permeability features of a spheroidal graphite iron (SG iron) is required. Typical applications include valves, dies, pistons and moulds.
Analysis
| Carbon | 3.40-3.85% | Phosphorous | 0.10% max |
| Manganese | 0.10-0.30% | Sulphur | 0.02% max |
| Silicon | 2.30-3.10% | Magnesium | 0.07% max |
| Iron | balance |
Typical Properties
| Typical Tensile Strength N/mm² | Typical Elongation % | Typical Hardness HB |
|---|---|---|
| 420 | 12 | 120-180 |
Mechanical properties shown are typical and may vary subject to the size and section of this sg iron grade.
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