10.5 PREHEATING

10.8 MATERIAL TEST REPORTS
Materials test reports, sometimes can be a very valuable tool for the inspector
and welding engineer. These are typically notarized statements and are
legally binding.
There are typically two types of test reports,
■
■
a heat analysis and
a product analysis.
A heat analysis, or mill certificate, is a statement of the chemical analysis and
weight percent of the chemical elements present in an ingot or a billet. An
ingot and a billet are the customary shapes into which a molten metal is cast.
These shapes are the starting points for the manufacture of wrought shapes
by the metal-forming process, such as rolling, drawing forging or extrusion.