API Pressure Classes
API 6A required equipment to be designed to one of the following maximum rated working pressures.
- 2,000 psi
- 3,000 psi
- 5,000 psi
- 10,000 psi
- 15,000 psi
- 20,000 psi
- 2M psi
- 3M psi
- 5M psi
- 10M psi
- 15M psi
- 20M psi
- 13.8 MPa
- 20.7 MPa
- 34.5 MPa
- 69.0 MPa
- 103.5 MPa
- 138.0 MPa
API 6A Material Class
Material Class
- AA – General Service
- BB – General Service
- CC – General Service
- DD – Sour Service
- EE – Sour Service
- FF – Sour Service
- HH – Sour Service
Body – Bonnet – Outlets
- Carbon or Low Alloy
- Carbon or Low Alloy
- Stainless
- Carbon or Low Alloy
- Carbon or Low Alloy
- Stainless
- CRA
Pressure Controlling Parts, Stems, Hangers
- Carbon or Low Alloy
- Stainless
- Stainless
- Carbon or Low Alloy
- Stainless
- Stainless
- CRA
API 6A Temperature Class
Charpy Impact Requirements
Classification
- K – -75°F (-60°C)
- L – -50°F (-46°C)
- N – -50°F (-46°C)
- P – -20°F (-29°C)
- S – 0°F (-18°C)
- T – 0°F (-18°C)
- U – 0°F (-18°C)
- V – 0°F (-18°C)
PSL 1
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- –
- –
- –
- –
- –
PSL 2
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- –
- –
- –
- –
PSL 3
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J
- 15 ft-lbf (20) J