ASME B107.50M pdf download BRICK CHISELS AND BRICK SETS: SAFETY REOUIREMENTS 4.3.2 The hardness of the struck face of the chiselor set shall not exceed 45 HRC 4.4Tests Many tests required herein are inherently hazardousand adequate safeguards for personnel and propertyshall be employed in conducting such tests. 4.4.1 General. Brick chisels and brick sers shallbe capable of meeting tests specified...