Description
Hastelloy C4
HASTELLOY® C-4 alloy (UNS N06455) is the most (microstructurally) stable of the widely used nickel-chromium-molybdenum materials, which are well known for their resistance to many aggressive chemicals, in particular hydrochloric acid, sulfuric acid, and chlorides. This stability means that the alloy can be welded without fear of sensitization, i.e. the nu-cleation and growth of deleterious, second phase precipitates in the grain boundaries of the weld heat-affected zone (HAZ).
%Chemical Composition
| Cu | C | Si | Ti | Mn | Fe | Mo | Cr | Co | Ni |
| (max) 0.5 | (max) 0.01 | (max) 0.08 | (max) 0.7 | (max) 1 | (max) 3 | 16 | 16 | (max) 2 | Balance |
Hardness
| Typical ASTM Grain Size | Hardness, HRBW | Form |
| 7.5 – 6 | 92 | Sheet |
| 6 – 4 | 90 | Plate |
Specifications
| SB 575/B 575 P= 43 |
Sheet, Plate & Strip |
| SB 574/B 574 P= 43 |
Billet, Rod & Bar |
| SFA 5.11/A 5.11 (ENiCrMo-7) DIN 2.4612 (EL-NiMo15Cr15Ti) F= 43 |
Coated Electrodes |
| SFA 5.14/ A 5.14 (ERNiCrMo-7) DIN 2.4611 (SG-NiMo16Cr16Ti) F= 43 |
& Bare Welding Rods Wire |
| SB 622/B 622 P= 43 |
Seamless Pipe & Tube |
| SB 619/B 619 SB 626/B 626 P= 43 |
Welded Pipe & Tube |
| SB 366/B 366 P= 43 |
Fittings |
| 17744 No. 2.4610 NiMo16Cr16Ti | DIN |
| Werkstoffblatt 424 Kennblatt 2666 Kennblatt 2667 Kennblatt 2665 |
TÜV |
| NACE MR0175 ISO 15156 |
Others |
DM unit
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