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Calculation tool for determining the PWHT parameters
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Hollomon-Jaffe Parameter: Minimizing negative effects through multiple PWHT Cycles
Leakage rate conversion
Hydrogen generator systems – safety requirements
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Piping Codes suitable for PED applications?
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Additional requirements for welding procedure qualification (WPQR) in accordance with EN 13445-4 clause 8.3
Carbon Equivalent formula for steel – An overview
CE (IIW) – Carbon Equivalent Calculator

Category: Material

Terms for hydrogen induced cracking processes of steels

The hydrogen induced cracking of steels takes place according to different processes. Both the environmental conditions and other influences such as stresses and the (more…)

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hydrogen material requirements
What are HIC resistant steels?

HIC-resistant steels are used when carbon steel is exposed to hydrogen sulphide (H2S) in the acidic or humid H2S environment of electrochemical corrosion reactions. (more…)

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Pipes and line pipes
Pipes for pipelines: Comparison of ISO 3138 with API Spec 5L pipes

API Spec 5L specifies requirements since 1928 for manufacture of Line Pipe. The scope of the current issue is defined as: “Requirements for the (more…)

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Austenitic stainless steels: What is the difference between “L” grade and “H” grade?

The common austenitic grades of stainless steel, such as 304 and 316, are also available “standard” and with controlled low carbon “L” or high (more…)

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ISO 15614-1: Which range of material groups according to ISO 15608 are qualified?
A welding procedure qualification record (WPQR) in acc. to ISO 15614-1 qualifies a welding procedure for steels and specifies conditions for the range of qualification. …
Standard bodies
What are designations for materials such as EN-Material No., Grade, AISI, or UNS?

The EN material number according to EN 10027-2 is a unique number and is primarily based on the chemical composition and is primarily used (more…)

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Welding
For which materials is Standard Welding Procedure Specification (SWPS) EN ISO 15612 for pressure vessels possible?

EN ISO 15612 specifies how a standard welding procedure specification (SWPS) can be qualified by developing it on the basis of one or more (more…)

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welding column
For which materials is welding procedure qualification (WPQR) according to EN ISO 15610 possible?

EN ISO 15610 specifies how a welding procedure (WPQR) can be qualified by using tested welding consumables. But this application of EN ISO 15610 (more…)

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U-stamp and CE Marking
Are the EN ISO 15608 Material groups comparable with the P-no groups ASME BPVC Section IX?
The ISO/TR 15608 Material groups are similar but not 1:1 comparable with the P-no groups acc. to ASME BPVC Section IX. The main difference between the two is that the ISO system allows any material within the scope of the …
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