MATERIAL DESCRIPTION

AISI 4330 V is a chromium, nickel, molybdenum, vanadium high strength low alloyed steel suitable for downhole tools and drilling jars. It offers improved hardenability and the ability to achieve higher tensile strengths and impact.

Heat Treatment

Hardened at 840 to 870°C and tempered at 600°C.

Weldability

Better than AISI 4145, but still challenging.

Chemical composition

Weight % C Si Mn Cr Mo Ni V S P
Min.  0,28  0,20  0,75  0,70  0,35  1,65  0,05
Max.  0,33  0,35  1,00  0,95  0,50  2.00  0,10  0,025  0,025

Product Standards: ASTM A29/ 29M (4330V)

Mechanical Properties: Bar

Yield strength Rp0.2,
MPa		 Tensile strength Rm,
MPa		 Elongation
[%]		 Hardness
[HBW]		 Impact, Charpy-V, -20ºC
[J]
Min. (150 ksi)  1034  1138  15  341-388  32

Round bar stock – MIN YLD 150 KSI

(30-36 HRC)

DIA DIA
63 mm 220 mm
95,25 mm  254 mm
110 mm 285 mm
5,5″ 305 mm
152 mm 320 mm
180 mm 356 mm
8″ 368 mm
8.25″ 406,5 mm 

* NS1 THROUGH THICKNESS HARDNESS

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Equivalent standards

  • EN 1.6562
  • ASTM A255
  • AISI 4330V Modified
Tags: Round Bar & Bored Bar