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Incoloy 800HT/UNS N08811/DIN W. Nr. 1.4959
| Form | ASTM |
| Rod and bar | B 408 |
| Plate, sheet and strip | A 240, A 480, B 409, B 906 |
| Seamless pipe and tube | B 407, B 829 |
| Welded pipe | B 514, B 775 |
| Welded tube | B 515, B 751 |
| Welding fitting | B 366 |
| Forging | B 564 |
Chemical composition
| % | Fe | Ni | Cr | C | Mn | Si | S | Cu | Al | Ti |
| min | 39.5 | 30.0 | 19.0 | 0.05 | 0.15 | 0.15 | ||||
| max | 35.0 | 23.0 | 0.10 | 1.50 | 1.00 | 0.015 | 0.75 | 0.60 | 0.60 |
Physical properties
| Density | 7.94 g/cm3 |
| Melting range | 1357-1385℃ |
Features: Incoloy 800H has a restricted carbon content range of 0.05 to 0.10%, which is in the upper portion of that of Incoloy 800, and is annealed at 1149 to 1177℃ (Incoloy 800 is annealed at 983 to 1038℃). These differences impart it to have higher stress rupture and creep properties than Incoloy 800.
Applications: Chemical and petrochemical process piping, high temperature heat exchangers, furnace components, carburizing equipment, heating-element sheathing, and nuclear power steam superheating tubing.
Note: Incoloy is a registered trademark of the Special Metals Corporation group of companies.
Seamless Pipe
Product Specification
| Product | Size Range |
| Stainless steel seamless tube & pipe |
OD: φ1-φ914.4mm WT:0.2-80mm |
| U-Tube |
OD: φ12-φ38mm WT: 0.5-4mm |
P.S As per special grade
Main Steel Type and Typical Grade
| Steel Types | Typical Steel Codes(AISI) |
| Austenitic | TP304/304L, TP304H, TP316/316L, TP316H, TP316Ti, TP321, TP321H, TP347/H, TP347HFG, 904L, TP309S,TP310MoLN,TP310H, TP310S, TP317/17L, TP316LMo≥2.5,S31254,904L; etc |
| Duplex/Super duplex | S31803; S32205; S31500; S32750; S32760 |
| Nickel-Alloy | UNS N08825, N08020, N08028, N08800,N08810,N08811,N04400,N06600,N06601,N06625,N06690,N06022,N10276,N10665,N10673, etc |
P.S As per special grade
Main Production Standards
| Standard Type | Standards |
| EN | EN10216-5; EN10216-2 |
| DIN | DIN 17456; DIN 17458 |
| ASTM |
ASTM A312, A213, A269, A511, A789, A790; B163, B423, B407, B668 ASME SA213, SA312, SA789, SA790; SB163, SB423, SB407, SB668 |
| JIS | JIS G3459; G3463 |
| GOST | GOST 9941; GOST 5632 |
| GB | GB/T14975; GB/T14976; GB13296; GB5310; GB9948 |


