Let’s continue from where we left off in the Previous Blog, there are more factors governing why iron casting foundries prefer high-quality Ductile (SG) iron for casting over other materials.

A broad range of sizes & load ratings

Stringent quality commitment and improved customization enable iron-casting foundries in India to manufacture unique products. The product load ratings generally fall under the A15, B125, and C250 to F900 ranges. Based on the accuracy of applications, the range of sizes of SG iron products can vary greatly. The robust locking provisions leak-proof guarantee and choices of painting (black bitumen, epoxy, etc.) lead to the usability and popularity of SG Iron further.

Reduced Brittleness & enhanced Abrasion Resistance

Compared to several other iron types, SG iron is comparatively less brittle by default whilst the elasticity and elongation properties are relatively higher. Consequently, the various grades of SG iron can be employed in the ‘as-cast’ form even before subjecting to extra heat treatment processes. Even the leading casting companies in Coimbatore prefer ductile iron having a surface finish that is supremely smooth and thoroughly abrasion-resistant. This characteristic, in particular, makes the material perfect for the design of high-friction parts, components, and systems (for example: engine crankshafts)

Quality Assurance

State-of-the-art ductile iron pipe and drainage applications specifically, and engineering tools & accessories, in general, have surfaced as key components driving the growth of our infrastructure. For guaranteed quality standard approvals and optimization, industrial manufacturers generally follow the recent ASTM and EN-124 standards. Rapid turnover times are guaranteed, and a range of ready-for-production designs are found in the market. World-class quality certifications including the ISO 14001:2015 and ISO 9001:2015 stress the importance of commitment to the quality of the major manufacturers

Combination of Elongation, Yield Strength, and Tensile Strength

With a tensile strength that falls in the range between 60000 and 1,20,000 psi, SG iron castings are comparatively better than grey iron castings in the manufacture of axles, manhole covers, fittings, pipes, crankshafts, valves, gearboxes, suspension system components, valves, and several other such products. When it comes to the elongation levels, SG iron exhibits better characteristics, whilst the yield strength is greater than regular grey iron manifold times.  For surface hardenability, trust the enhanced performance of ductile iron.

Economical Option 

We, at VR Foundries, always believe in delivering the best value to clients, with the support of the casting ecosystem, suppliers and partners by adopting agile and low-cost production methods. Since the product cost is effectively controlled, our SG iron products are marketed at highly competitive rates.  When it comes to efficiency, durability, reliability, and performance, ductile iron usually outplays grey iron and several low-alloy steel materials in many areas.

The global iron casting industry is valued at over $140 billion by 2030, and the Compound Annual Growth Rate (CAGR) is slated to grow 7 percent between the periods 2021-2030. In line with the robust worldwide trends, the foundry industry in India is also moving higher up the charts. Taking into consideration the range of advantages of ductile iron, its use in the industrial area is gradually turning out to be mainstream. There has been a big comeback by the casting industry following the pandemic-related effects and steadily moving forward, with the growth of ductile iron, in particular, looking more promising, and casting products optimized to superior quality will continue to propel the Indian casting industry forward.