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IACS UR W27 - Welding Consumables Grade

Minimum welding-consumable grade (1Y, 2Y, 3Y, 4Y, 5Y) required to match a parent-steel grade per IACS UR W27 - the rule used by every class for procurement and WPS qualification.

IACSW27Welding
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Formula, assumptions, and limits

GradeconsGradeparent\text{Grade}_{cons} \geq \text{Grade}_{parent}
SymbolMeaningUnit
YgradeY gradeYield strength series (1/2/3/4/5)
TempsuffixTemp suffixCharpy impact-test temperature°C

Source: IACS UR W27 Rev.3

In short

Minimum welding-consumable grade (1Y, 2Y, 3Y, 4Y, 5Y) required to match a parent-steel grade per IACS UR W27 - the rule used by every class for procurement and WPS qualification.

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