You're looking for a standard related to "BR 3021". After conducting a search, I found that BR 3021 is a Brazilian technical standard (Norma Brasileira) published by the Brazilian Association of Technical Standards (Associação Brasileira de Normas Técnicas - ABNT).
BR 3021 remains a "gold standard" for naval survivability in the UK and internationally. While it originated in the 1970s, it is still cited in modern naval procurement contracts (such as for the Indian Navy or UK MOD) to guarantee that critical combatant systems remain operationally available after a shock event. br 3021 standard pdf
Target Equipment: The standard applies to everything from marine engines and propulsion units to sensitive sonar, radar, and GPS systems. You're looking for a standard related to "BR 3021"
If you can confirm the full title or issuing body of BR 3021 (e.g., British Rail? BSI? Rolls-Royce?), I can locate the exact interesting clause for you. While it originated in the 1970s, it is
, is a critical naval engineering specification primarily used by the Ministry of Defence (MOD)
The softening point is not a melting point. It is the temperature at which a material reaches a specific degree of softness under defined test conditions. This property is critical for:
Testing and Validation