4145H 120 KSI as per API standard

4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
4145H 120 KSI as per API standard
4145H 120 KSI as per API standard

Description

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4145H 120 KSIasper API standard

AISI 4145H 120 KSI Alloy Steel Bar for Drilling Collar, Drill Pipe, Square Kelly, Lifting Sub, Stabilizer

Dimensions
Hot Rolled Round:dia.50-130 mm
Forged Round: dia.100-1300 mm
Delivery Condition

EAF+LF+VD, Hot Rolled or Forged, Machined, Q+T, UT 100% Passed

Chemical Composition(%)
C Si Mn P S Cr Mo Ni Cu
0.42-0.49 0.15-0.35 0.80-1.15 ≤ 0.020 ≤ 0.025 0.75-1.20 0.15-0.45 ≤ 0.25 ≤ 0.30
Mechanical Properties
  Tensile Strength PSI (MPa) Yield Strength PSI (MPa) Elongation Reduction of Area Hardness
Min. 140000 120000 14% 45% 30 HRC (285 HB)
Max. ------ ------ ------ ------ 36 HRC (341 HB)
Characteristics

AISI / SAE 4145H grade is a low-alloy steel containing chromium and molybdenum as strengthening agents. The steel has good fatigue strength and impact toughness in low temperature, weldability and machinability. 

Applications

This low-alloy steel is used in heat treated condition with 120 KSI minimum yield strength for oil and gas equipments of well drilling, wellhead, Christmas tree, etc.

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