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25CrMoV5-8

1.7755
alloy_steelhigh_temp
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Cr-Mo-V high-temperature bolt steel for service up to ~540°C. Used alongside 21CrMoV5-7 in power plant bolting — slightly higher Cr+Mo for improved creep resistance at the cost of toughness. Used for turbine casing bolts, high-pressure steam valve studs, and boiler fasteners.

International equivalents

FlagStandardCountryGradeNumberMatch
🇪🇺ENEurope25CrMoV5-81.7755100%

Sources: EN 10269:2013

Chemical composition comparison (wt%)

Side-by-side: 25CrMoV5-8 (EN 10269) vs 25CrMoV5-8 (EN) (EN 10269:2013)

Element25CrMoV5-8 (EN 10269)25CrMoV5-8 (EN)Overlap
C—0.22–0.29%—
Si—0–0.3%—

Mechanical properties

Compatibility verdict

25CrMoV5-8 and 25CrMoV5-8: 100% composition match

Related materials

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🇪🇺 16MnCr5🇫🇷 16MC5🇨🇳 16MnCr5🇯🇵 SCr415
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