Forging Ingots for Oil and Gas Equipment
Oil and gas equipment works under high pressure, shock loads and sometimes corrosive service. Alloy steels such as 4140 and 4130 are quenched and tempered to the strength class required.
Forging ingots for oil field equipment are cast in 4140, 4130 and EN19 grades for collars, couplings, wellhead parts and valve bodies.
Typical components
- Drill collars and tool joints
- Wellhead flanges and spools
- Valve bodies
- Couplings and subs
- Blowout preventer parts
Recommended steel grades
SAE 4140
The American-designation counterpart of EN19 and 42CrMo4. Strong, tough and easy to heat treat.
SAE 4130
A lower carbon chrome-moly steel with good weldability and strength, used in pressure and structural parts.
EN19
A widely used chrome-moly steel with good hardenability, toughness and fatigue strength in the quenched and tempered condition.
SAE 4340
A tough, high strength steel with excellent hardenability. Often chosen for heavy-duty, shock-loaded parts.
ASTM A182 F22
A creep-resistant chrome-moly steel for forged flanges, fittings and valves operating at high temperature and pressure.
Choosing the ingot
Oil field buyers often specify API or NACE-related restrictions on residuals and hardness. Include these in your enquiry so the melt can be planned accordingly.
Check the ingot size chart for available marks and weights, and read how to choose the right ingot size using the forging reduction ratio.