4140 WROUGHT CHROMIUM-MOLYBDENUM LOW ALLOY STEELS WITH 110 KSI 1.0 Scope 1.1 This specification is for seamless 4140 API 5CT chromium-molybdenum low alloy steels in quenched and tempered condition with 110 ksi MYS. 1.2 Material is to conform to the requirements of NACE MR0175 (ISO 15156-2) and is resistant to Sulfide Stress Cracking (SSC) in H2S containing…