[MW:20674] RE: 20669] Ladle(heat )analysis VS Product Analysis

Hello Payam,

Please see the extract from API-RP-577, which provides explanations to your query. Ladle or heat analysis is the composition at the and of the melt. Product analysis is the composition at the end of finished processing.

What matters most in the MTR is the product analysis.

Thanks

Pradip Goswami, P.Eng,IWE

Welding & Metallurgical Specialist

Ontario, Canada

pgoswami@quickclic.net

pradip.goswami@gmail.com

pradip_goswami@yahoo.ca

10.8 MATERIAL TEST REPORTS

Materials test reports, sometimes can be a very valuable tool for the inspector and welding engineer. These are typically notarized statements and are legally binding. There are typically two types of test reports, a heat analysis and a product analysis. A heat analysis, or mill certificate, is a statement of the chemical analysis and weight percent of the chemical elements present in an ingot or a billet. An ingot and a billet are the customary shapes into which a molten metal is cast.

These shapes are the starting points for the manufacture of wrought shapes by the metal-forming process, such as rolling, drawing forging or extrusion. A product analysis is a statement of the chemical analysis of the end product and is supplied by the manufacturer of the material. These reports can be supplied for any form of material, including wrought products, such as plate, pipe, fittings or tubing, castings and weld filler metals. The product analysis is more useful to the inspector and engineer since it provides a more reliable identification of the actual material being used for new fabrication or repair of existing equipment.

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of PAYAM MAFAKHER
Sent: Friday, April 25, 2014 12:37 AM
To: materials-welding@googlegroups.com
Subject: [MW:20669] Ladle(heat )analysis VS Product Analysis

Would you please help me ,What is the Tolerance/Deviation in composition BetweenLadle(heat )analysis VS Product Analysis ?

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