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High Collapse > Grade Table

JFE-95T
JFE-110T

JFE-95T  -110TWith a recent increase in deep well drilling, there is a growing need for high collapse casing in a minimum yield strength of 95 ksi (655 MPa) grade. Collapse resistance is affected by yield strength, deviation of wall thick-ness, roundness, residual stress and D/t (D for outside diameter and t for wall thickness).Reducing the deviation of wall thickness at hot rolling, controlling yield strength by closely reg- ulating heat treatment conditions,and minimizing the deterioration of roundness and straightness during cooling are performed. This process is governed by our special techniques and knowhow.

a. Specifications

(a) Process of Manufacture and Heat Treatment

Seamless, quenched and tempered

(b) Chemical Requirements

(wt %)

Grade C, max. Si, max. Mn, max. P, max. S, max.
JFE-95T
JFE-110T
0.35 0.35 1.60 0.030 0.030

(c) Physical Properties

Grade Tensile Requirement Collapse
Resistance
Yield
Strength
ksi (MPa)
Tensile
Strength
min. ksi (MPa)
Elongation
JFE-95T 095~125
(655~862)
110 (758) As Per
API 5CT
Please ask JFE representative
JFE-110T 110~140
(758~965)
125 (862)

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