Explore authoritative engineering guides, metallurgy specifications, EN124 casting standards, and export-grade casting technology from ISO 9001 certified foundry specialists.
Modern infrastructure projects increasingly demand more than basic functionality. Commercial developments, residential complexes, lands…
A city's drainage and underground utility network depends on thousands of individual components that most people rarely notice until so…
Water meters are essential parts of residential, commercial, industrial and municipal water-supply systems. Although the meter itself p…
Industrial buyers increasingly expect more from a foundry than the ability to manufacture a metal component. OEM manufacturers, infrast…
Industrial buyers searching for an ISO 9001:2015 certified foundry in Kolkata are usually looking for more than a supplier capable of p…
Modern foundries use different moulding methods because no single production process is ideal for every casting. High-volume standard c…
Industrial buyers do not purchase castings simply because they look correct externally. A component may eventually become part of a gea…
Road infrastructure places far greater demands on manhole covers than pedestrian or light-duty environments. A manhole installed direct…
Agricultural machinery has to perform in conditions where ordinary mechanical components can wear or fail quickly. Farm equipment opera…
Aris Foundry delivers high-integrity Grey Cast Iron and Ductile SG Iron castings engineered to international ASTM, BS EN, DIN, and IS standards for global infrastructure.
Heavy-duty EN124 D400 manhole covers, C250 kerb drain units, and gully gratings engineered for highway municipal drainage networks.
High-pressure ductile iron pipe fittings, flanged bends, equal tees, dismantling joints, and sluice valve boxes manufactured to ISO 2531.
Safety-critical railway track castings, cast iron brake blocks, rail chairs, slide baseplates, and locomotive ballast counterweights.
High-wear agricultural machinery castings, tractor axle housings, CNC machined wheel hubs, and plow points built for farm equipment OEMs.
A side-by-side engineering comparison of standard Grey Cast Iron versus Spheroidal Graphite (SG) Ductile Iron poured at our Baidyabati Works.
| Mechanical Property | Grey Cast Iron (EN-GJL-250 / FG 260) | Ductile SG Iron (EN-GJS-500-7 / 500/7) | Ductile SG Iron (EN-GJS-400-18 / 400/18) |
|---|---|---|---|
| Tensile Strength (MPa) | 250 MPa min | 500 MPa min | 400 MPa min |
| Yield Strength 0.2% (MPa) | — (Brittle Mode) | 320 MPa min | 250 MPa min |
| Elongation % ($A$) | 0.3% – 0.8% | 7.0% min | 18.0% min |
| Impact Energy (Charpy V) | Low (< 2 J) | 12 Joules | 18 Joules (-20°C Low Temp) |
| Brinell Hardness (HBW) | 180 – 240 HB | 170 – 230 HB | 130 – 180 HB |
| Primary Applications | Machine beds, counterweights, drainage gratings | EN124 D400 covers, gearbox housings, axle supports | High-pressure water pipe fittings, valve bodies |
Authoritative technical answers from Aris Foundry engineering specialists regarding casting metallurgy, EN124 compliance, tolerances, and custom OEM manufacturing.
Grey cast iron contains sharp flake graphite, offering excellent acoustic damping, high thermal conductivity, and machinability, but very low elongation (<1%).
Ductile iron is inoculated with magnesium causing graphite to precipitate as spherical nodules. This eliminates internal stress risers, yielding tensile strength up to 700 MPa and elongation up to 18% matching cast carbon steel.
We manufacture municipal castings across all EN 124 classes: A15 (1.5 tonne pedestrian), B125 (12.5 tonne car parks), C250 (25 tonne kerbside channels), D400 (40 tonne heavy carriageways), E600 (60 tonne docks/industrial), and F900 (90 tonne airport runways).
Every furnace heat is verified by 24-channel optical emission spectrometry (OES). We perform Universal Testing Machine (UTM) tensile/elongation tests, Brinell hardness checks, magnetic particle inspection (MPI), ultrasonic testing, and hydrostatic pressure testing up to 25 bar.
Yes. We regularly manufacture according to ASTM A48 / A536, BS EN 1561 / 1563, ISO 1083 / 2531 / 9523, DIN 1691 / 1693, and IS 210 / 1865 specifications for international buyers.
Custom pattern tooling and first-article prototype development take 2 to 3 weeks depending on part complexity. Full containerized batch production and export shipping take 3 to 5 weeks from sample sign-off.
Yes. Our in-house machine shop operates CNC turning centers, vertical machining centers (VMC), and boring mills. Coatings include anti-corrosive bitumen dip, epoxy coating (FBE), zinc primer, and hot-dip galvanizing exceeding 250 microns.
We export to Europe, the Middle East, North America, and Southeast Asia. Castings are packed on ISPM-15 certified heat-treated wooden pallets, steel-strapped, shrink-wrapped, and stuffed with Indian Customs Self-Sealing certification at Baidyabati Works.
Submit 2D drawings (PDF/DWG) or 3D STEP models via our RFQ modal dialog, email info@arisfoundry.com, or message WhatsApp (+91 98744 82288). Detailed technical quotes are returned within 24 hours.
Connect directly with our metallurgy engineers and production estimators to receive comprehensive technical quotes, dimensional tolerances, and containerized export schedules.
