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AISI 4145 (80 KSI / 110 KSI)
AISI 4145 API Grade: Deep-Hardening Alloy for Downhole Tooling. Maximum hardenability and torque resistance for the world’s most demanding boreholes.
AISI 4145 (80 KSI / 110 KSI)
AISI 4145 is a high-hardenability variation of the 41xx series, featuring increased carbon content (0.45% nominal). This allows the material to achieve consistent mechanical properties through larger diameters (up to 10" and above), which is critical for heavy-walled drilling tools.
Chemical Composition | Percentage % |
|---|---|
Carbon | 0.43 – 0.48% |
Manganese | 0.75 – 1.00% |
Silicon | 0.15 – 0.35% |
Chromium | 0.80 – 1.10% |
Molybdenum | 0.15 – 0.25% |
Phosphorous | 0.035% Max |
Sulphur | 0.040% Max |
Certified Quality Assurance
At Progressive Metal Manufacturing, we specialize in the supply of high-performance AISI 4145 alloy steel, engineered to meet rigorous mechanical requirements. Our inventory is managed under a strict ISO 9001 quality system, with material available in both 80 KSI and 110 KSI minimum yield strength conditions. To ensure total technical compliance, we provide BS EN 10204 3.1 mill certificates or cast and analysis documentation upon request. This commitment to documented integrity ensures that our steel performs reliably in high-stress, high-torque environments.
Industrial Applications & Versatility
The superior hardenability and toughness of AISI 4145 make it the industry standard for the most demanding oil and gas drilling operations.
Specifically designed to withstand extreme downhole pressures and rotational stress,
this chromium-molybdenum-manganese alloy is essential for critical drilling hardware.
Typical applications for our 4145 stock include the manufacturing of drill collars, subs, and stabilizers.
Its high strength and wear resistance also make it the preferred choice for heavy-duty tool joints, shafts, and specialized gear components.
From deep-sea exploration to industrial power transmission, Progressive Metal Manufacturing delivers the structural resilience required for the world's harshest environments.
Precision Supply & Custom Specifications
We operate as a premier stockholder of AISI 4145, offering a versatile range of round bar profiles tailored to your engineering specifications.
Our facility provides precision sawing services, allowing us to deliver bespoke cut-to-size blanks or full-length bars to streamline your production.
Our current 4145 availability includes:
High-Tensile Round Bar: Stocked in a variety of diameters to suit heavy-duty machining.
Precision Finishing: Available in black as-rolled or specialized finishes to meet tight dimensional tolerances.
Custom Cutting: One-off pieces or high-volume batches processed with absolute accuracy.
Our dedicated sales consultants are available to provide expert guidance on material selection and logistics to ensure your project remains on schedule.
AISI 4140 (80 KSI / 110 KSI)
