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Category Archives for "Material"

Material specification, ASMT, BS, EN, ISO, DIN, JIS standards

Duplex stainless steel and Supper duplex stainless steel

DefinitionsDuplex Stainless SteelThis refers to standard duplex stainless steel, a stainless steel with 22% chromium, with UNS S31803 and UNS S32205 (both known as Alloy 2205) being the most widely used. Common duplex stainless castings are UNS J92205 (ASTM A890 Grade 4A, CD3MN) and UNS J93372 (ASTM A890 Grade 1B, CD4MCuN).  A 22%Cr duplex stainless steel […]

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Upgrade and retest material

An upgrade or retest material are normally conduct by mechanical properties, chemical composition and supplementary testing as agreement between the fabricator and supplier. The reason of the testing may be based on the unknown material (missing markings),  the unlisted approval vendor list, or re-verification of material, etc. These material shall be mock up and subject […]

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ASTM A-106/A-106M- Material inspection and review MTC – Carbon steel pipe

Pipe inspection and review its MTC meet type 3.1 are a minimum of Manufacturer, heat number, specification and its grades, Manufacture/ Delivery condition, Dimensions, Weight, Mechanical properties, Chemical analysis, Heat treatment, Hydrotest or non-destructive test, supplementary (if specified in the purchase order).
Please note that ASTM A106 does not cover the welded pipe.

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What is a material test certificates (MTC)

A mill test report (MTR) and often also called a certified mill test report, certified material test report, mill test certificate (MTC), inspection certificate, certificate of test, is a quality assurance document used in the metals industry that certifies a material’s chemical and physical properties and states a product made of metal compliance with specific standards such as ANSI, ASME, ISO, JIS, etc. Mill here refers to an industrial steel which manufactures and processes raw materials.

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Base metal selection to minimize cost on qualifying of ASME IX and AWS D1.1 (PQR and Welder)

This topic guide to select mid steel metal for PQR qualification and how to minimize cost  & time?

If you need to apply 2 codes of ASME IX & AWS D1.1 qualifications at the same time on different test coupons.
If you do not want to waste a balance material.
Hence, we would like to detail of 3 important points in material selection during running PQRs: Type of material, wide range of qualification, welder qualification.

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