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Table of Content
AS ASTM A182 F91 Flat Face Slip On Flanges
AS ASTM A182 F91 Raised Face Slip On Flanges
| STANDARD | UNS | WERKSTOFF NR. |
| Alloy Steel F91 | K90901 | 1.4903 |
| Grade | C | Mn | Si | P | S | Cr | Mo |
| Alloy Steel F91 | 0.08 - 0.12 | 0.3 - 0.6 | 0.5 | 0.01 | 0.02 | 8.5 - 9.5 | 0.85 - 1.05 |
| Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
| Rockwell B (HR B) max | Brinell (HB) max | ||||
| F91 | 585 | 415 | 20 | - | 248 max |