Mechanically resilient and wear resistant steel compositions and high-pressure pumps and pump components comprised thereof

A hydraulic fracturing pump comprising a fluid end assembly, the fluid end assembly comprising:

• a cylinder body configured to receive a respective plunger from a power end assembly;
• a suction bore configured to house a valve body, a valve seat, and a spring;
• and
• a spring retainer,
• wherein at least one of the cylinder body, the suction bore, and the spring retainer comprises a steel composition comprising:
• a nickel content from about 3% MB to about 4% MB;
• a manganese content from about 0.5% MB to about 1.5% MB;
• a chromium content from about 12% MB to about 13.4% MB;
• a molybdenum content from about 0.3% MB to about 0.7% MB;
• and
• a copper content of less than about 0.40% MB,
• wherein the steel composition further comprises at least one of:
• a J-Factor value of less than about 300;
• a minimum yield strength ranging from 130 Ksi to 150 Ksi;
• a YTS ranging from 140 Ksi to 160 Ksi;
• a longitudinal minimum Charpy @−22° F. ranging from 70 ft./lbs. to 90 ft./lbs.;
• a transverse minimum Charpy @−22° F. ranging from 60 ft./lbs. to 80 ft./lbs.;
• an elongation value of 16/14 (L/T);
• an Ra value of 55/50 (L/T);
• and
• a Brinell Hardness Number ranging from 315 to 375.