GRADE 420 MOD & API 5CT 13CR TUBE
Mechanical Tubing & OCTG
GENERAL SCOPE
This is a martensitic stainless steel used in the hardened and tempered condition. Available in tubular form either as mechanical tube or casing tube The manufacturing standards of ASTM A519 are used for mechanical tube supply.
When bill of material requirements can be matched against the wide stock sizes available considerable cost savings in both raw material supply and manufacturing are achievable against the comparable bar product form supply.
It is used extensively on completion equipment in both bar form, and for structural and pressure containing members, in standard and CO₂ environments. pH, chlorides, temperature and H₂S can limit its use in other environments.
The grade is approved by NACE MR0175 supplied to 22 HRC for packers and other sub-surface equipment.
CHEMICAL COMPOSITION
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 0.18 | 0.25 | 0.25 | • | . | 12.50 | . | . | . | 0.00 |
| Max | 0.22 | 1.00 | 1.00 | 0.020 | 0.005 | 14.00 | 0.50 | . | 0.25 | 0.00 |
| C | Si | Mn | P | S | Cr | Ni | Mo | Cu | Fe | |
|---|---|---|---|---|---|---|---|---|---|---|
| Min | 0.15 | . | 0.25 | • | . | 12.00 | . | . | . | 0.00 |
| Max | 0.22 | 1.00 | 1.00 | 0.020 | 0.010 | 14.00 | 0.50 | . | 0.25 | 0.00 |
MECHANICAL PROPERTIES
| U.T.S | 100 KSI Min | (689 N/mm2) |
| 0.2% Proof Stress | 80 KSI Min | (551 N/mm2) |
| Elongation | 20 % | |
| Red of Area | 40 % | |
| CVN Impacts @ -10°C (14°F) | 20 Joules | (15 ft-lbf) |