Material Certificate Check

Compares user-entered actual material certificate values (mechanical properties, Charpy, through-thickness reduction of area, chemical composition) against user-entered requirement values. Reports whether the actual values numerically meet the entered requirement — it does not look up or embed any standard's requirement tables.

Engineering calculator — results require technical review before production use.

Fill in only the properties you want to check; anything left blank is simply not evaluated.

Mechanical properties

Product thickness (mm)

Product description

Required yield strength (Re) min (MPa)

Actual yield strength (Re) (MPa)

Required tensile strength (Rm) min (MPa)

Required tensile strength (Rm) max (MPa)

Actual tensile strength (Rm) (MPa)

Required elongation min (%)

Actual elongation (%)

Charpy impact test

Required single-value minimum (J)

Required average minimum (J)

Actual specimen values (J)

Required test temperature (°C)

Actual test temperature (°C)

RAZ / Z-quality

Required single-value minimum (%)

Required average minimum (%)

Actual specimen values (%)

Chemical composition & ladle/product analysis

Ladle analysis is used as the primary basis for each element's result when both ladle and product analysis are supplied; product analysis is still checked and reported.

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

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Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

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Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Required min (%)

Required max (%)

Actual (ladle) (%)

Actual (product) (%)

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Actual (ladle) (%)

Actual (product) (%)

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Required max (%)

Actual (ladle) (%)

Actual (product) (%)

Source & assumptions

IWE Module 2 – Materials and Their Behavior during Welding, Chapter 3, Section 1 (Understanding a Material Certificate)

Assumptions

This tool evaluates actual certificate values against requirement values the user enters — it does not embed, look up, or infer any standard's acceptance criteria, grade table, or classification scheme.
"Meets entered requirement" means the actual value(s) satisfy the specific numeric requirement the user typed in — it is not a certification, approval, or conformance statement against any named standard.
Numeric comparisons use inclusive boundaries: a value exactly equal to a required minimum or range boundary is treated as meeting the requirement.
Yield strength is modeled as a single minimum requirement, unlike tensile strength which is a range.
Charpy/RAZ: when the average requirement is met but one or more individual values fall below the single-value minimum, the result is review-required, not does-not-meet-entered-requirement — different specifications tolerate a different number of below-floor values, and this tool has no verified rule for that. When the average itself is not met, the result is does-not-meet-entered-requirement regardless of individual values.
Ladle vs. product analysis: per the source's stated preference for ladle analysis in calculations, ladle analysis governs each element's composition indication when supplied. Product analysis, when also supplied, is evaluated and reported as supplementary information only — it does not override the ladle-based indication; disagreement produces a warning.
The source notes a restriction on Nb + V + Ti due to carbide-forming concerns. Nb and Ti are included as composition elements alongside V so each can be entered and checked individually — no specific numeric limit for the combined Nb+V+Ti sum was part of the confirmed source support, so no combined-sum check is computed.
Elongation values are assumed to already use a consistent gauge-length/measurement convention.
Product thickness is contextual/informational only; no applicability rule (e.g. RAZ only required above a given thickness) is encoded.

Limitations

Not a substitute for a qualified materials/welding engineer's review of the certificate as a whole.
Does not verify certificate authenticity, traceability, heat-number consistency, or any certificate-type/classification requirements.
Does not encode any grade-specific requirement table — every requirement value must be entered manually by the user.
Does not apply any standard-specific rule for how many individual Charpy/RAZ specimens may fall below the single-value minimum while the lot as a whole still meets the requirement.
Does not apply any standard-specific numeric product-analysis tolerance widening relative to ladle analysis.
The Nb+V+Ti carbide-forming restriction noted in the source is qualitative only as confirmed — this tool does not compute a combined Nb+V+Ti sum or enforce any numeric limit for it.
Does not evaluate whether through-thickness (RAZ/"Z-quality") testing is applicable/required at all for a given thickness or application.
Does not normalize or verify elongation gauge-length conventions.
Per the source material's illustrative/example framing, results are numeric comparisons only — never an authoritative compliance verdict.
The 'unusually high' composition warnings are an implementation-level sanity check for likely data-entry errors — they are not sourced from IWE Module 2 and are not a compositional specification limit.