ASTM A387 grade 91 specification covers chromium-molybdenum alloy steel plates intended primarily for welded boilers and pressure vessels designed for elevated temperature service.
ASTM A387 grade 91 steel pipe/tube chemical composition
| Element | Carbon | Manganese | Phosphorus,max | Sulfur,max | Silicon | chromium | Molybdenum | |||||||
| Grade 91 | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis | Heat analysis | Product analysis |
| 0.08-0.12 | 0.06-0.15 | 0.30-0.60 | 0.25-0.66 | 0.020 | 0.025 | 0.010 | 0.012 | 0.20-0.50 | 0.18-0.56 | 8.00-9.50 | 7.90-9.60 | 0.85-1.05 | 0.80-1.10 | |
ASTM A387 grade 91 welded steel pipe/tube mechanical properties
| Tensile strength,ksi[mpa] | Yield strength,min,ksi[mpa] | Elongation in 8 in[200mm],min,% | Elongation in 2 in[50mm],min,% | Reduction of area,min,% | |
| Grade 91 | 85-110 | 60[415] | -- | 18 | -- |
A387 grade91 welded pipe/tube dimension
ERW outer diameter:21.3-660mm thickness:6-25mm
LSAW outer diameter:325-1524mm thickness:6-50mm
SSAW outer diameter:219-3200mm thickness:5-25mm
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As a A387 grade 91 welded pipe/tube Manufacturer, if you want to get more information about A387 grade 91 welded pipe/tube or if you need A387 grade 91 welded pipe/tube machining service , please contact Katalor !
