You're looking for a report on BS EN 10242 PDF. Here's what I found:

Fittings manufactured under this standard are subjected to heat treatment to improve ductility, allowing them to flex without breaking. The standard recognizes several material grades: Pipe Standards & Specifications - Crane Fluid Systems

What is the scope of BS EN 10242?

BS EN 10242 applies to fittings made of malleable cast iron withthreaded joints. The primary applications for these fittings include:

Fittings manufactured to BS EN 10242 are widely used in:

The standard applies to threaded malleable cast iron fittings for general-purpose piping systems.

B 30-06

Under the standard, materials are designated by a symbol indicating the tensile strength. For example, a typical designation might be , where:

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