"SA 578 LEVEL B" hard punching was not there but present on stenciling marking.

[rushigav08]

Dear All
Please tell me is it necessary to have hard punch "SA 578 LEVEL B" for 20 mm THK plate SA 516 GR 60/70. Stenciling showing "SA 578 LEVEL B" but no hard punch seen.

 

[ulyssess]

See SA 578 subclause 13.1
13.1 Plates accepted according to this specification shall be identified by stenciling (stamping) “UT A 578—A” on one corner for Level A, “UT A 578—B” for Level B, and “UT A 578—C” for Level C. The supplement number shall be added
for each supplementary requirement ordered.

 

[EdStainless]

Dose the definitions call stencil stamping only?
Why couldn't stencil be ink marking, etching, or some other method?

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P.E. Metallurgy, consulting work welcomed