Quick answer SS410 is martensitic and hardenable – the right choice when a part needs strength plus moderate corrosion resistance, such as pump and valve shafts. SS409 and SS430 are ferritic and cannot be hardened by heat treatment – they’re chosen instead for corrosion resistance and formability at lower cost, such as exhaust systems and … Read more
Quick answer Power and heavy-infrastructure buyers typically need chromium-molybdenum grades (ASTM A182 F11, F22, F91) for steam and high-temperature service, IBR-compliant material wherever a boiler or steam pressure part is involved, and full heat-to-certificate traceability to satisfy EPC quality audits – the same technical bar as the oil & gas and valve sector, applied to … Read more
Quick answer Spring steel (EN45, 55Si7, 65Si7, SUP-series) uses silicon-manganese alloying combined with a precise quench-and-temper cycle to raise the elastic limit high enough that a part returns fully to shape after repeated flexing instead of taking a permanent set. Grade and section choice depend mainly on whether the spring is a heavy-duty automotive leaf … Read more
Quick answer SAE 4140 and EN19 (both chromium-molybdenum steels) suit medium-section shafts and structural forgings needing good strength and toughness at moderate cost. SAE 4340 and EN24 add nickel, which raises hardenability significantly and lets larger sections through-harden without a severe water quench – the right choice when section thickness, or the need for a … Read more
Quick answer Navratri, Dussehra and Diwali fall across September and November and bring overlapping short shutdowns – not one clean holiday but several partial stoppages stacked close together – across melt shops, transporters and labour throughout the NCR–Rajasthan manufacturing belt. The reliable way to avoid a supply gap is to place your Q3 order 3–4 … Read more
Quick answer Free-cutting steel (EN1A, SAE 1117, EN8DM) has controlled sulphur – and in some grades, lead – deliberately added to make the steel break chips cleanly and machine faster on automatic lathes. The trade-off is lower weldability and slightly reduced toughness compared with an equivalent plain-carbon grade, which is why free-cutting steel is chosen … Read more
200 mm round as-cast billets are now part of Kesari Alloys’ billet and bloom range, alongside the existing square sections from 100×100 to 250×250 SQ mm. Supplied as-cast at approximately 240 kg per metre, these continuous cast round billets are designed for seamless tube and pipe production, round-bar re-rolling, and shaft or ring forging applications. … Read more
When sourcing forging ingots, billets or blooms in Delhi NCR, check ten things before you compare price: certifications, grade range, size range, melting route, heat number traceability, in-house testing, heat treatment capability, existing vendor approvals, lead time and freight cost. Proximity to your plant matters but only after the material is right. A cheap local … Read more
The mould does far more than hold the shape. It controls how fast and in which direction the steel solidifies, and that decides grain structure, the extent of centreline segregation, and whether the surface cracks. Fluted molds increase surface area and speed up heat extraction. Square moulds are the general-purpose choice for drawing down. Round … Read more
Choosing the right forging ingot size is not simply a matter of matching the ingot weight to the finished component. The size and profile of the starting forging ingot directly influence material yield, forging reduction, internal soundness, machining cost and the final inspection outcome. An ingot that is too small may not provide the required … Read more