Low alloy vs high alloy steel

mithlesh kumar

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Dec 28, 2022, 1:23:52 AM12/28/22

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Dear expert ,

Please brief difference between low alloy steel vs high alloy steel.

A335 P9 is low or high alloy steel.

Sankaran Sp

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Dec 28, 2022, 10:31:36 PM12/28/22

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Dear Mr. Mithlesh kumar,

when we adding the total alloying elements of Cr,Ni,Mo, if the total is less than or equal to 10% this is low alloy steel, total alloys are greater than 10 % that is high alloy steel.

A335 P9 - low alloy steel pipe.

Regards,

Sankaran.SP

Welding & Metallurgy expert

Coimbatore, India.

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Kannayeram Gnanapandithan

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Dec 29, 2022, 10:18:03 PM12/29/22

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Low alloy less than 5% of individual or aggregate of total number of alloying elements , greater than 5% and less than 10.5% is medium, and above 10.5 high alloy as mentioned for low alloy.

THANKS & BEST REGARDS,

KG.PANDITHAN, BE, IWE, CSWIP 3.1,

ISO 9712 Level 2 in VT,

ASNT-Level II in PT,MT,RT & UT,

LA ISO 9001-2015,

International Welding Engineer.

CONSULTANT-WELDING & QUALITY

Mobile no: +919940739349

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