4145 H MODIFIED HTSR

(Pink)AISI /SAE 4145 (UNS G 41450) MODIFIED HTSR

CHROMIUM-MOLYBDENUM STEEL TO ASTM A 29, A 370, A 434 CLASS BD E 112

Pink 4145 MHTSR
Pink

Size Range

3-1/2″ – 13-1/2″

TYPICAL APPLICATIONS

SHAFTS, GEARS, BOLTS, COUPLINGS, SPINDLES, TOOL HOLDERS, SPROCKETS, HYDRAULIC MACHINERY SHAFTS. FOR THE OIL INDUSTRY-DRILL COLLARS, KELLY BARS, TOOL JOINTS, SUBS, ETC.

MECHANICAL PROPERTIES – (LONGITUDINAL, 1″ BELOW SURFACE).

MECHANICAL PROPERTIES – HEAT TREATED AND STRESS RELIEVED

THIS ALLOY STEEL IS USED PRIMARILY FOR THE MANUFACTURE OF TOOLS IN THE OIL INDUSTRY. SUPPLIED WITH A STRAIGHTNESS TOLERANCE OF 1/8″ IN ANY 5 FOOT LENGTH, WITH A GRAIN SIZE OF 6 OR FINER, AS PER ASTM E 112. THIS STEEL IS HEAT TREATED AND HARDENED BY WATER QUENCH, TEMPERED, STRESS RELIEVED AND SUPPLIED IN A ROUGH TURNED CONDITION. ALL BARS ARE ULTRASONIC TESTED, WITH CHARPY V IMPACT @ 57 DEGREES CELSIUS FT. LBS. WITH MINIMUM AVERAGE VALUE OF 3 READINGS. NO MORE THAN ONE SINGLE VALUE SHALL BE LOWER THAN 5 FT. LBS. BELOW STATED AVERAGE VALUE.
CAN BE SUPPLIED TO COMPLY TO API SPEC. 7 IN THE MANUFACTURE OF DRILL COLLARS IN 31 TO 31-1/2 FOOT BARS.

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