Project Description
AISI 4145H MOD Hollow Bar
AISI 4145H 120 ksi, API 7-1 Standards is a chromium molybdenum quality alloy steel specification. As a high tensile steel grade AISI 4145H MOD is primarily supplied in the hardened and tempered condition to 30-36HRc range to AISI 4145H MOD. With a slightly higher carbon content AISI 4145H MOD is similar to AISI 4140 in that it offers good ductility, shock resisting characteristics combined with resistance to wear.
Advantages
Excellent strength-to-weight ratio
High tensile strength, ductility, and toughness
Lighter and more robust than carbon steel
Ability to harden using heat-treating or work hardening
SIZE RANGE
OD : 1.250” – 31.250”
OD Tolerance: +/- .005” (up to 1.500” OD), to +/- .010” (above 1.500” OD)
Wall thickness : 0.100”– 3.150”
Wall Tolerance: +/- 10% (For ID Over .500”) to +/- 15% (for ID under .500”)
17.000” – 24.000” random lengths (Cut to Length available)
Chemical Composition %
| Grade | C | Mn | Cr | Mo | Si | P | S | Ni | Cu | V | Al% | H max. ppm |
| Min. | 0.420 | 0.800 | 0.850 | 0.150 | 0.150 | – | – | – | – | – | 0.020 | – |
| Max. | 0.450 | 1.200 | 1.200 | 0.250 | 0.350 | 0.025 | 0.025 | 0.250 | 0.300 | 0.300 | 0.035 | 1.500 |
MANUFACTURING PROCESS
Depending on the grade and type, alloy tubing is either produced per ASTM A519 or API 5CT industry standards. See CDS, HRS, or Boring manufacturing processes per the specific type and specification for more information.
1 CDS: seamless tube and pipe is produced by piercing hot billets and subsequent rolling which reduces their diameter and elongates them. This material is then passed through a die and over a mandrel plug to produce an accurate size and gauge which is the essence of the cold drawing process.
2 HRS: Hot rolled mechanical tubing is produced by heating a solid billet or bar and then rotary piercing it as it rotates on rollers. Then the final processing through multiple pass size-reducing mills occurs. Tolerances and finish are similar to other hot worked steel products. Range of sizes and grades are more restricted than cold finished by the nature of the process involved.
3 Forging + Boring/Drilling: Drilling is the process of removing material by using a drill bit. Drill bit is a long, sharp instrument, often with flutes, but it may have a variety of features depending on the work.
Applications
AISI 4145H MOD Steel is commonly used for a variety of applications in the oil and gas sector. Used often for the manufacture of down hole drilling tools such as drill collars. Other applications include gears, shafts for hydraulic presses, rolls for paper mills, pump shafts and tool holders.
Order 4145H MOD Hollow Bar Today
We stocks a wide range of 4145H MOD hollow bar sizes for your specific project needs. We offer quick delivery. Contact us today to discuss using round 4145H MOD hollow bar in your application.
We are committed to integrate steel resources in china and serve the global steel market. Our company has more than 15 years of experience in steel researching, production, managing and sales. And our team mostly are based on and worked in national famous steel enterprise before. In the aspect of resources and information, we have established cooperative relationship with nearly hundred enterprises, either state-owned or private owned in China.
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