Knowledge Resources

Producing thin wall stainless steel investment castings — sections between 1.5mm and 4mm — is a different engineering problem from standard section investment casting. The metal solidifies faster, fill must be complete before the section freezes, and the margin for process variation is narrower in every dimension. This guide covers why thin wall stainless castings are specified, the applications that require them, what makes them technically different to produce.

The complete guide to bronze investment casting - all nine ASTM aluminium bronze grades (C95200-C95900), plus silicon bronze, tin bronze/gunmetal, and copper-nickel. Standards cross-references, heat treatment, dealuminification, and which grade to specify for marine, aerospace, chemical, and industrial service.

The copper chromium family - CuCr (C18200) and CuCrZr (C18150) - exists to solve one engineering problem: carrying high current and real structural load in the same component. This pillar guide covers both grades, the dual-property gap they fill, why heat treatment makes or breaks every casting, the applications where the alloy family is mandated, the industry transition away from beryllium copper, and exactly what to put on a drawing to receive castings that meet specificati

Pahwa MetalTech IS 4595 certified non-sparking tools — QTi® Copper Titanium and BronAL® Aluminium Bronze — are listed on the Government e-Marketplace (GeM) for direct procurement by government departments, PSUs, defence establishments, and CPSE organisations. Click any “View on GeM ↗” link to go directly to the respective product page on of Non Sparking Tools on GeM portal. For guidance on selecting non-sparking tools, material comparison between QTi and BronAL, and industry-

Investment casting of stainless steel begins with a grade selection decision that most engineers encounter at least once: SS304 or SS316. The difference between them is a single alloying addition. This guide explains what that addition delivers, the ASTM cast designations for both grades, the service conditions where SS304 is the correct and sufficient specification, the conditions where SS316 is mandated, and when to additionally specify the low-carbon L variants

Investment casting — also known as lost wax casting — is the precision metal forming process that produces complex near-net-shape components in a single operation. This guide covers the complete process, all material families across copper, stainless steel, and aluminium, precision capabilities, how investment casting compares to five alternative manufacturing routes, industrial applications across nine sectors, quality standards, and design guidelines for specifying engineer

OFHC and ETP copper are both high-conductivity grades used in investment casting, but their oxygen content makes them suitable for different applications. ETP copper is ideal for standard electrical components, while OFHC copper is essential for hydrogen-rich, high-temperature, and vacuum environments where hydrogen embrittlement and outgassing risks must be avoided. This guide compares properties, casting requirements, and specification standards.

A comprehensive guide to stainless steel investment casting across all five alloy families: austenitic (SS304/316L), duplex (2205/2507), precipitation hardening (17-4 PH), martensitic (SS410/420), and ferritic grades. Covers precision capabilities, heat treatment requirements, ASTM and EN standards, and industrial applications.

Engineers specifying copper bus bars and bus bar connectors have five manufacturing routes to choose from. This guide compares extrusion, machining from billet, CNC bending, sand casting, and investment casting — with a decision matrix and guidance on when converting existing sand castings or permanent mould castings to investment casting delivers measurable improvements in conductivity, surface finish, and material efficiency.

Investment cast copper alloys — ETP, OFHC, CuCr, and CuCrZr — are the engineering standard for switchgear contacts, bus bar connectors, and terminal lugs. This guide covers alloy selection, arc erosion resistance, MV vs. HV requirements, and the quality documentation switchgear manufacturers need from a casting supplier.

Not all copper alloy investment castings are equal - and neither are the foundries that produce them. This pillar guide covers alloy selection across high copper, brass, bronze, and cupronickel families, process control requirements, applicable ASTM/BS/EN standards, and industry applications. Use it to specify correctly, ask better questions, and identify a foundry with genuine metallurgical expertise.

Mr. Lalit Kumar Pahwa, Chairman and Managing Director of Pahwa MetalTech, delivered an insightful and inspiring valedictory address at the two-day workshop on Material Testing organized by the Indian Institute of Metals (IIM), Pune Chapter, held on March 12th and 13th, 2026.

The oil and gas industry includes several operational stages—from upstream exploration to downstream fuel distribution. Each stage involves hazardous environments where non sparking tools play a critical safety role.

16 documented fire and explosion events - drawn from OSHA, OISD, PESO, and CSB records - each involving spark ignition from steel tools where flammable gases or liquids were present. Every incident was preventable with certified non-sparking tools.