Specification for high expansion heat-resisting steel bar and wire for the manufacture of bolts, studs, set screws and nuts (Ni 25.5, Cr 15, Ti 2, Mn 1.5, Mo 1.25, Si 0.7, V 0.3) (limiting ruling section 50 mm) Ingestion-build-132972 2 Initial type tests

2 Initial type tests

Why should you use BS EN 12971-2 - Textile glass chopped strands

4 Water vapour permeability / water vapour resistance (expressed as water vapour resistance factor) question for the mandate

It also provides methods for testing conformity with these requirements

Specification for high expansion heat-resisting steel bar and wire for the manufacture of bolts, studs, set screws and nuts (Ni 25.5, Cr 15, Ti 2, Mn 1.5, Mo 1.25, Si 0.7, V 0.3) (limiting ruling section 50 mm) Ingestion-build-132972 2 Initial type tests1 Scope This British Standard specifies requirements for high expansion heat resisting steel bar and wire in the following forms for the manufacture of bolts, studs, set screws and nuts. a) Bar with a diameter over 25 mm up to and including 50 mm and wire with a maximum diameter of 50 mm for machining: softened, cold worked, solution treated and machined or ground, designation HR 650A. b) Bar with a diameter over 25 mm up to and including 50 mm and