ASTM A193 Grade B8 consists of two classes, namely Class 1 and Class 2. Grade B8 is a stud bolt or other fasteners made of SUS304 stainless steel. B8 Class 2 has higher strength than B8 Class 1. Bolts
ASTM A193 Grade B8 Class 1 Stud Bolt Specifications: Size: All Tengsile Strength (psi) : 75,000 Yield Strength (psi) : 30,000 HRC: 96 Max