Heat-treatable steels are in the mechanical construction steel range. They are characterized by carbon content usually in excess of 0.25%, and may or may not be alloys.
Heat-treatable steels are used to fabricate parts that require a combination of strength and tenacity, with relatively uniform values throughout the cross section or down to a certain depth. These properties are attained by means of quenching and tempering, which comprise the heat-treatment process.
A high hardenability chromium-molybdenum-vanadium steel normally used for bolts operating at temperatures below 450°C.
Frequently used in the chemical and oil & gas industries. Highly applicable to fixers used in flange seals operating under pressure.
ASTM A 193 GRADE B16;
Chemical Composition (% BY WEIGHT)
0,36 – 0,47
0,45 – 0,70
0,15 – 0,35
0,80 – 1,15
0,50 – 0,65
0,25 – 0,35
THERMAL TREATMENT AND PROCESSING TEMPERATURES (°C)