AISI 4340 Chromoly Alloy Oil Drilling Pipe , Seamless Steel Pipe
for Nonferrous Metal Mining Projects
Description
This AISI 4340 chromoly alloy drilling pipe represents advanced
seamless tubing engineered for the most demanding oil drilling and
nonferrous mining operations. Manufactured from
nickel-chromium-molybdenum alloy steel, it delivers exceptional
mechanical properties including ultra-high tensile strength
(minimum 130,000 psi yield strength), superior fracture toughness,
and outstanding fatigue resistance in extreme operating conditions.
The pipe's sophisticated alloy composition provides unparalleled
performance in abrasive nonferrous mining environments,
particularly in copper, lithium and nickel extraction where
equipment faces aggressive wear and corrosive challenges. Its
enhanced strength-to-weight ratio makes it ideal for deep-hole
drilling applications while maintaining structural integrity under
maximum compression loads and severe torsional stresses.
Precision-engineered through specialized heat treatment and
quenching processes, each length undergoes rigorous ultrasonic
testing and quality verification. This seamless pipe offers
superior reliability for both drill string components and
production casing in critical mining operations, demonstrating
exceptional resistance to stress corrosion cracking and hydrogen
embrittlement - essential characteristics for maintaining
operational safety and efficiency in the world's most challenging
nonferrous mining projects.
Specification
| Specifications | ASTM, ASME and API |
| Size | O.D.: 4 to 219mm W. T.: 0.5 to 20mm |
| Specialized in | Large Diameter Size |
| Length | Within 13500mm |
| Type | Seamless |
| Shape | Round |
| End | Plain End, Beveled End, Treaded |
ASTM A519 4130 Pipe Chemical Composition
| Element | Content (%) |
| Iron, Fe | 97.03 – 98.22 |
| Chromium, Cr | 0.80 – 1.10 |
| Manganese, Mn | 0.40 – 0.60 |
| Carbon, C | 0.280 – 0.330 |
| Silicon, Si | 0.15 – 0.30 |
| Molybdenum, Mo | 0.15 – 0.25 |
| Sulfur, S | 0.040 |
| Phosphorous, P | 0.035 |
ASTM A519 4130 Pipe Mechanical Properties
| Properties | Metric | Imperial |
| Tensile strength, ultimate | 560 MPa | 81200 psi |
| Tensile strength, yield | 460 MPa | 66700 psi |
| Modulus of elasticity | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (Typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (Typical for steel) | 80 GPa | 11600 ksi |
| Poissons ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 21.50% | 21.50% |
| Reduction of area | 59.6 | 59.60% |
| Hardness, Brinell | 217 | 217 |
| Hardness, Knoop (Converted from Brinell hardness) | 240 | 240 |
| Hardness, Rockwell B (Converted from Brinell hardness) | 95 | 95 |
| Hardness, Rockwell C (Converted from Brinell hardness, value below
normal HRC range, for comparison purposes only.) | 17 | 17 |
| Hardness, Vickers (Converted from Brinell hardness) | 228 | 228 |
| Machinability (Annealed and cold drawn. Based on 100% machinability
for AISI 1212 steel.) | 70 | 70 |
ASTM A519 4130 Steel Pipe Equivalent
| STANDARD | UNS | CN | WERKSTOFF NR. | AFNOR | EN | JIS | BS | GOST |
| AISI 4130 | G41300 | 30CrMo | 1.7218 | – | 25CrMo4 | JIS G4105 | BS 970 | – |
Packing
Bundles with plastic end caps, wooden box package
Application
Mine blasting
Water well drilling
Geothermal wells drilling
Fore poling
Coal
Nonferrous metal mining projects
