GRADE 4130 : 4140 : 4145 TUBE
Mechanical Tubing & OCTG
4130/4140/4145 Tube
GENERAL SCOPE
Stocked through a wide range of sizes, in either mechanical tube per ASTM A519 or casing product forms, these grades of low alloy steel containing chromium and molybdenum are the most widely used alloy for oil patch applications. Usually supplied in the hardened and tempered condition at 22 HRC max. They also find favour in many applications requiring higher strength levels up to 150 KSI 0.2% PS. The grade is not NACE MR0175 approved in these conditions, and should not be used in environments containing H₂S without qualification testing.
The hardenability limitations of this grade (depth to which it will harden / obtain the specified mechanical properties after heat treatment) must always be taken into account when designing and selecting equipment.
CHEMICAL COMPOSITION
| C | Si | Mn | P | S | Cr | Mo | Fe | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.28 | 0.15 | 0.40 | • | . | 0.80 | 0.15 | 0.00 |
| Max | 0.33 | 0.35 | 0.60 | 0.040 | 0.040 | 1.10 | 0.25 | 0.00 |
| C | Si | Mn | P | S | Cr | Mo | Fe | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.38 | 0.15 | 0.75 | • | . | 0.80 | 0.15 | 0.00 |
| Max | 0.43 | 0.35 | 1.00 | 0.040 | 0.040 | 1.10 | 0.25 | 0.00 |
| C | Si | Mn | P | S | Cr | Mo | Fe | |
|---|---|---|---|---|---|---|---|---|
| Min | 0.43 | 0.15 | 0.75 | • | . | 0.80 | 0.15 | 0.00 |
| Max | 0.48 | 0.35 | 1.00 | 0.040 | 0.040 | 1.10 | 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 % |
| U.T.S | 130 KSI Min | (896 N/mm2) |
| 0.2% Proof Stress | 110 KSI Min | (758 N/mm2) |
| Elongation | 13 % | |
| Red of Area | 30 % |