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Paramtents
Heat treatment Quenching and Tempering
Surface Bright or Black Surface
Application Oil industry, Raise bore drill rods and drive subs
Standard AMS 6427 AMS 6359 AMS6304 ASTM A646
Packging & Delivery
Min Order1 metric ton
Briefing
Detailed
4137H Hollow Bar offers good strength, weldability, impact and abrasion resistance while also being easy to machine. Because it's stronger than carbon steel, thinner-walled tubing can be used for the same purpose. 4137H tubing stock is available in full size and custom cut lengths.
Excellent strength-to-weight ratio
High tensile strength, ductility, and toughness
Lighter and more robust than carbon steel
Easy to weld, form, and machine
Ability to harden using heat-treating or work hardening
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)
Grade | C | Mn | Si | P | S | Cr | Mo |
4137H | 0.34-0.41 | 0.60-1.00 | 0.15-0.35 | 0.035 max | 0.040 max | 0.75-1.20 | 0.15-0.25 |
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.
Aerospace applications
Gas and oil equipment
We stocks a wide range of 4137H hollow bar sizes for your specific project needs. We offer quick delivery. Contact us today to discuss using round 4137H hollow bar in your application.
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