Portland Bolt Expands with Acquisition of Vermont-Based Applied Bolting Technology
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A193 Mechanical Properties

Grade Size Tensile ksi, min Yield, ksi, min Elong, %, min RA % min HBW Rockwell
B7 Up to 2-1/2 125 105 16 50 321 max 35 HRC max
2-5/8 – 4 115 95 16 50
4-1/8 – 7 100 75 18 50
B8 Class 1 All 75 30 30 50 223 max 96 HRB max
B8M Class 1 All 75 30 30 50 223 max 96 HRB max
B8 Class 2 Up to 3/4 125 100 12 35 321 max 35 HRC max
7/8 – 1 115 80 15 35
1-1/8 – 1-1/4 105 65 20 35
1-3/8 – 1-1/2 100 50 28 45
B8M Class 2 Up to 3/4 110 95 15 45 321 max 35 HRC max
7/8 – 1 100 80 20 45
1-1/8 – 1-1/4 95 65 25 45
1-3/8 – 1-1/2 90 50 30 45

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