Difference Between Inconel 625 and Incoloy 625
INCONEL 625
Common Trade Names : Inconel 625®, Chronin® 625, Altemp® 625, Haynes® 625, Nickelvac® 625, Nicrofer® 6020, UNS N06625
Inconel ® 625 is a nonmagnetic, corrosion and oxidation resistant, nickel-base alloy and also known as Incoloy 625. Alloy 625 has high strength and toughness in the temperature range cryogenic to 2000°F (1093°C) which is derived largely from the solid solution effects of the refractory metals, columbium and molybdenum, in a nickel-chromium matrix. Alloy 625 has excellent fatigue strength and stress - corrosion cracking resistance to chloride ions.
INCONEL® 625 LCF is a variant of INCONEL® 625. LCF stands for Low Cycle Fatigue. This means that the alloy has improved cycle fatigue properties and better thermal fatigue resistance. In other aspects such as chemical composition and other mechanical properties the alloy is similar to INCONEL® 625. The alloy is e.g. used for bellows, aircraft exhausts and expansion joints.
Chemical Analysis of ALLOY 625 (UNS N06625)
Common Names : Inconel 625®, Chronin® 625, Altemp® 625, Haynes® 625, Nickelvac® 625, Nicrofer® 6020
ASTM Specifications
| Pipe Smls | Pipe Welded | Tube Smls | Tube Welded | Sheet/Plate | Bar | Forging | Fitting | Wire |
|---|---|---|---|---|---|---|---|---|
| B444 | B705 | B444 | B704 | B443 | B446 | - | - | - |
Inconel 625 Mechanical Properties
Representative Tensile Properties, bar, 1800° F anneal
| Temp° F | Tensile (psi) | .2% Yield (psi) | Elongation in 2 “ (%) |
|---|---|---|---|
| 70 | 144,000 | 84,000 | 44 |
| 400 | 134,000 | 66,000 | 45 |
| 600 | 132,000 | 63,000 | 42.5 |
| 800 | 131,500 | 61,000 | 45 |
| 1000 | 130,000 | 60,500 | 48 |
| 1200 | 119,000 | 60,000 | 34 |
| 1400 | 78,000 | 58,500 | 59 |
| 1600 | 40,000 | 39,000 | 117 |
Inconel 625 Melting Point
| Melting Point | 1290 - 1350 °C | 2350 - 2460 °F |
Inconel 625 Equivalent
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| Inconel 625 | 2.4856 | N06625 | NCF 625 | NA 21 | ХН75МБТЮ | NC22DNB4MNiCr22Mo9Nb | NiCr23Fe |
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